diff options
Diffstat (limited to 'Documentation')
43 files changed, 593 insertions, 142 deletions
diff --git a/Documentation/devicetree/bindings/arm/adapteva.txt b/Documentation/devicetree/bindings/arm/adapteva.txt deleted file mode 100644 index 1d8af9e36065..000000000000 --- a/Documentation/devicetree/bindings/arm/adapteva.txt +++ /dev/null @@ -1,7 +0,0 @@ -Adapteva Platforms Device Tree Bindings ---------------------------------------- - -Parallella board - -Required root node properties: - - compatible = "adapteva,parallella"; diff --git a/Documentation/devicetree/bindings/arm/amlogic.txt b/Documentation/devicetree/bindings/arm/amlogic.txt index 69880560c0f0..b5c2b5c35766 100644 --- a/Documentation/devicetree/bindings/arm/amlogic.txt +++ b/Documentation/devicetree/bindings/arm/amlogic.txt @@ -41,6 +41,14 @@ Boards with the Amlogic Meson GXL S905D SoC shall have the following properties: Required root node property: compatible: "amlogic,s905d", "amlogic,meson-gxl"; +Boards with the Amlogic Meson GXL S805X SoC shall have the following properties: + Required root node property: + compatible: "amlogic,s805x", "amlogic,meson-gxl"; + +Boards with the Amlogic Meson GXL S905W SoC shall have the following properties: + Required root node property: + compatible: "amlogic,s905w", "amlogic,meson-gxl"; + Boards with the Amlogic Meson GXM S912 SoC shall have the following properties: Required root node property: compatible: "amlogic,s912", "amlogic,meson-gxm"; @@ -79,6 +87,11 @@ Board compatible values (alphabetically, grouped by SoC): - "amlogic,p230" (Meson gxl s905d) - "amlogic,p231" (Meson gxl s905d) + - "amlogic,p241" (Meson gxl s805x) + + - "amlogic,p281" (Meson gxl s905w) + - "oranth,tx3-mini" (Meson gxl s905w) + - "amlogic,q200" (Meson gxm s912) - "amlogic,q201" (Meson gxm s912) - "khadas,vim2" (Meson gxm s912) diff --git a/Documentation/devicetree/bindings/arm/atmel-pmc.txt b/Documentation/devicetree/bindings/arm/atmel-pmc.txt deleted file mode 100644 index 795cc78543fe..000000000000 --- a/Documentation/devicetree/bindings/arm/atmel-pmc.txt +++ /dev/null @@ -1,14 +0,0 @@ -* Power Management Controller (PMC) - -Required properties: -- compatible: Should be "atmel,<chip>-pmc". - <chip> can be: at91rm9200, at91sam9260, at91sam9g45, at91sam9n12, - at91sam9x5, sama5d3 - -- reg: Should contain PMC registers location and length - -Examples: - pmc: pmc@fffffc00 { - compatible = "atmel,at91rm9200-pmc"; - reg = <0xfffffc00 0x100>; - }; diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt index c052caad36e8..104cc9b41df4 100644 --- a/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt +++ b/Documentation/devicetree/bindings/arm/bcm/brcm,brcmstb.txt @@ -189,7 +189,11 @@ Power-Down (SRPD), among other things. Required properties: - compatible : should contain one of these + "brcm,brcmstb-memc-ddr-rev-b.2.1" "brcm,brcmstb-memc-ddr-rev-b.2.2" + "brcm,brcmstb-memc-ddr-rev-b.2.3" + "brcm,brcmstb-memc-ddr-rev-b.3.0" + "brcm,brcmstb-memc-ddr-rev-b.3.1" "brcm,brcmstb-memc-ddr" - reg : the MEMC DDR register range diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt index 29e1dc5d506d..96dfccc0faa8 100644 --- a/Documentation/devicetree/bindings/arm/cpus.txt +++ b/Documentation/devicetree/bindings/arm/cpus.txt @@ -183,6 +183,7 @@ described below. "marvell,sheeva-v5" "nvidia,tegra132-denver" "nvidia,tegra186-denver" + "nvidia,tegra194-carmel" "qcom,krait" "qcom,kryo" "qcom,kryo385" @@ -219,6 +220,7 @@ described below. "qcom,kpss-acc-v1" "qcom,kpss-acc-v2" "renesas,apmu" + "renesas,r9a06g032-smp" "rockchip,rk3036-smp" "rockchip,rk3066-smp" "ste,dbx500-smp" diff --git a/Documentation/devicetree/bindings/arm/freescale/m4if.txt b/Documentation/devicetree/bindings/arm/freescale/m4if.txt new file mode 100644 index 000000000000..93bd7b867a53 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/freescale/m4if.txt @@ -0,0 +1,12 @@ +* Freescale Multi Master Multi Memory Interface (M4IF) module + +Required properties: +- compatible : Should be "fsl,imx51-m4if" +- reg : Address and length of the register set for the device + +Example: + +m4if: m4if@83fd8000 { + compatible = "fsl,imx51-m4if"; + reg = <0x83fd8000 0x1000>; +}; diff --git a/Documentation/devicetree/bindings/arm/freescale/tigerp.txt b/Documentation/devicetree/bindings/arm/freescale/tigerp.txt new file mode 100644 index 000000000000..19e2aad63d6e --- /dev/null +++ b/Documentation/devicetree/bindings/arm/freescale/tigerp.txt @@ -0,0 +1,12 @@ +* Freescale Tigerp platform module + +Required properties: +- compatible : Should be "fsl,imx51-tigerp" +- reg : Address and length of the register set for the device + +Example: + +tigerp: tigerp@83fa0000 { + compatible = "fsl,imx51-tigerp"; + reg = <0x83fa0000 0x28>; +}; diff --git a/Documentation/devicetree/bindings/arm/fsl.txt b/Documentation/devicetree/bindings/arm/fsl.txt index cdb9dd705754..8a1baa2b9723 100644 --- a/Documentation/devicetree/bindings/arm/fsl.txt +++ b/Documentation/devicetree/bindings/arm/fsl.txt @@ -53,6 +53,10 @@ i.MX6 Quad SABRE Automotive Board Required root node properties: - compatible = "fsl,imx6q-sabreauto", "fsl,imx6q"; +i.MX6SLL EVK board +Required root node properties: + - compatible = "fsl,imx6sll-evk", "fsl,imx6sll"; + Generic i.MX boards ------------------- diff --git a/Documentation/devicetree/bindings/arm/insignal-boards.txt b/Documentation/devicetree/bindings/arm/insignal-boards.txt deleted file mode 100644 index 524c3dc5d808..000000000000 --- a/Documentation/devicetree/bindings/arm/insignal-boards.txt +++ /dev/null @@ -1,8 +0,0 @@ -* Insignal's Exynos4210 based Origen evaluation board - -Origen low-cost evaluation board is based on Samsung's Exynos4210 SoC. - -Required root node properties: - - compatible = should be one or more of the following. - (a) "samsung,smdkv310" - for Samsung's SMDKV310 eval board. - (b) "samsung,exynos4210" - for boards based on Exynos4210 SoC. diff --git a/Documentation/devicetree/bindings/arm/mediatek.txt b/Documentation/devicetree/bindings/arm/mediatek.txt index 48fac4ec91fc..8f260e5cfd16 100644 --- a/Documentation/devicetree/bindings/arm/mediatek.txt +++ b/Documentation/devicetree/bindings/arm/mediatek.txt @@ -51,6 +51,9 @@ Supported boards: - Evaluation board for MT6797(Helio X20): Required root node properties: - compatible = "mediatek,mt6797-evb", "mediatek,mt6797"; +- Mediatek X20 Development Board: + Required root node properties: + - compatible = "archermind,mt6797-x20-dev", "mediatek,mt6797"; - Reference board variant 1 for MT7622: Required root node properties: - compatible = "mediatek,mt7622-rfb1", "mediatek,mt7622"; @@ -63,9 +66,6 @@ Supported boards: - Reference board for MT7623n with eMMC: Required root node properties: - compatible = "mediatek,mt7623n-rfb-emmc", "mediatek,mt7623"; -- Reference board for MT7623n with NAND: - Required root node properties: - - compatible = "mediatek,mt7623n-rfb-nand", "mediatek,mt7623"; - Bananapi BPI-R2 board: - compatible = "bananapi,bpi-r2", "mediatek,mt7623"; - MTK mt8127 tablet moose EVB: diff --git a/Documentation/devicetree/bindings/arm/omap/l4.txt b/Documentation/devicetree/bindings/arm/omap/l4.txt index b4f8a16e7e3b..6816adcdc15f 100644 --- a/Documentation/devicetree/bindings/arm/omap/l4.txt +++ b/Documentation/devicetree/bindings/arm/omap/l4.txt @@ -7,6 +7,7 @@ Required properties: Should be "ti,omap2-l4-wkup" for OMAP2 family l4 wkup bus Should be "ti,omap3-l4-core" for OMAP3 family l4 core bus Should be "ti,omap4-l4-cfg" for OMAP4 family l4 cfg bus + Should be "ti,omap4-l4-per" for OMAP4 family l4 per bus Should be "ti,omap4-l4-wkup" for OMAP4 family l4 wkup bus Should be "ti,omap5-l4-cfg" for OMAP5 family l4 cfg bus Should be "ti,omap5-l4-wkup" for OMAP5 family l4 wkup bus @@ -15,11 +16,21 @@ Required properties: Should be "ti,am3-l4-wkup" for AM33xx family l4 wkup bus Should be "ti,am4-l4-wkup" for AM43xx family l4 wkup bus - ranges : contains the IO map range for the bus +- reg : registers link agent and interconnect agent and access protection +- reg-names : "la" for link agent, "ia0" to "ia3" for one to three + interconnect agent instances, "ap" for access if it exists Examples: -l4: l4@48000000 { - compatible "ti,omap2-l4", "simple-bus"; +l4: interconnect@48000000 { + compatible "ti,omap4-l4-per", "simple-bus"; + reg = <0x48000000 0x800>, + <0x48000800 0x800>, + <0x48001000 0x400>, + <0x48001400 0x400>, + <0x48001800 0x400>, + <0x48001c00 0x400>; + reg-names = "ap", "la", "ia0", "ia1", "ia2", "ia3"; #address-cells = <1>; #size-cells = <1>; ranges = <0 0x48000000 0x100000>; diff --git a/Documentation/devicetree/bindings/arm/rockchip.txt b/Documentation/devicetree/bindings/arm/rockchip.txt index 1c1d62d03c4f..acfd3c773dd0 100644 --- a/Documentation/devicetree/bindings/arm/rockchip.txt +++ b/Documentation/devicetree/bindings/arm/rockchip.txt @@ -1,5 +1,10 @@ Rockchip platforms device tree bindings --------------------------------------- + +- 96boards RK3399 Ficus (ROCK960 Enterprise Edition) + Required root node properties: + - compatible = "vamrs,ficus", "rockchip,rk3399"; + - Amarula Vyasa RK3288 board Required root node properties: - compatible = "amarula,vyasa-rk3288", "rockchip,rk3288"; @@ -66,6 +71,15 @@ Rockchip platforms device tree bindings Required root node properties: - compatible = "geekbuying,geekbox", "rockchip,rk3368"; +- Google Bob (Asus Chromebook Flip C101PA): + Required root node properties: + compatible = "google,bob-rev13", "google,bob-rev12", + "google,bob-rev11", "google,bob-rev10", + "google,bob-rev9", "google,bob-rev8", + "google,bob-rev7", "google,bob-rev6", + "google,bob-rev5", "google,bob-rev4", + "google,bob", "google,gru", "rockchip,rk3399"; + - Google Brain (dev-board): Required root node properties: - compatible = "google,veyron-brain-rev0", "google,veyron-brain", diff --git a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.txt b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.txt index 6970f30a3770..56021bf2a916 100644 --- a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.txt +++ b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.txt @@ -1,7 +1,10 @@ -* Samsung's Exynos SoC based boards +* Samsung's Exynos and S5P SoC based boards Required root node properties: - compatible = should be one or more of the following. + - "samsung,aries" - for S5PV210-based Samsung Aries board. + - "samsung,fascinate4g" - for S5PV210-based Samsung Galaxy S Fascinate 4G (SGH-T959P) board. + - "samsung,galaxys" - for S5PV210-based Samsung Galaxy S (i9000) board. - "samsung,artik5" - for Exynos3250-based Samsung ARTIK5 module. - "samsung,artik5-eval" - for Exynos3250-based Samsung ARTIK5 eval board. - "samsung,monk" - for Exynos3250-based Samsung Simband board. diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt index d8cf740132c6..89b4a389fbc7 100644 --- a/Documentation/devicetree/bindings/arm/shmobile.txt +++ b/Documentation/devicetree/bindings/arm/shmobile.txt @@ -51,7 +51,8 @@ SoCs: compatible = "renesas,r8a77990" - R-Car D3 (R8A77995) compatible = "renesas,r8a77995" - + - RZ/N1D (R9A06G032) + compatible = "renesas,r9a06g032" Boards: @@ -112,6 +113,8 @@ Boards: compatible = "renesas,porter", "renesas,r8a7791" - RSKRZA1 (YR0K77210C000BE) compatible = "renesas,rskrza1", "renesas,r7s72100" + - RZN1D-DB (RZ/N1D Demo Board for the RZ/N1D 400 pins package) + compatible = "renesas,rzn1d400-db", "renesas,r9a06g032" - Salvator-X (RTP0RC7795SIPB0010S) compatible = "renesas,salvator-x", "renesas,r8a7795" - Salvator-X (RTP0RC7796SIPB0011S) diff --git a/Documentation/devicetree/bindings/arm/ti/k3.txt b/Documentation/devicetree/bindings/arm/ti/k3.txt new file mode 100644 index 000000000000..6a059cabb2da --- /dev/null +++ b/Documentation/devicetree/bindings/arm/ti/k3.txt @@ -0,0 +1,23 @@ +Texas Instruments K3 Multicore SoC architecture device tree bindings +-------------------------------------------------------------------- + +Platforms based on Texas Instruments K3 Multicore SoC architecture +shall follow the following scheme: + +SoCs +---- + +Each device tree root node must specify which exact SoC in K3 Multicore SoC +architecture it uses, using one of the following compatible values: + +- AM654 + compatible = "ti,am654"; + +Boards +------ + +In addition, each device tree root node must specify which one or more +of the following board-specific compatible values: + +- AM654 EVM + compatible = "ti,am654-evm", "ti,am654"; diff --git a/Documentation/devicetree/bindings/arm/xilinx.txt b/Documentation/devicetree/bindings/arm/xilinx.txt index b9043bc35c14..26fe5ecc4332 100644 --- a/Documentation/devicetree/bindings/arm/xilinx.txt +++ b/Documentation/devicetree/bindings/arm/xilinx.txt @@ -8,18 +8,38 @@ Required root node properties: Additional compatible strings: -- Xilinx internal board cc108 +- Adapteva Parallella board + "adapteva,parallella" + +- Avnet MicroZed board + "avnet,zynq-microzed" + "xlnx,zynq-microzed" + +- Avnet ZedBoard board + "avnet,zynq-zed" + "xlnx,zynq-zed" + +- Digilent Zybo board + "digilent,zynq-zybo" + +- Digilent Zybo Z7 board + "digilent,zynq-zybo-z7" + +- Xilinx CC108 internal board "xlnx,zynq-cc108" -- Xilinx internal board zc770 with different FMC cards +- Xilinx ZC702 internal board + "xlnx,zynq-zc702" + +- Xilinx ZC706 internal board + "xlnx,zynq-zc706" + +- Xilinx ZC770 internal board, with different FMC cards "xlnx,zynq-zc770-xm010" "xlnx,zynq-zc770-xm011" "xlnx,zynq-zc770-xm012" "xlnx,zynq-zc770-xm013" -- Digilent Zybo Z7 board - "digilent,zynq-zybo-z7" - --------------------------------------------------------------- Xilinx Zynq UltraScale+ MPSoC Platforms Device Tree Bindings diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt index c760ecb81381..663766685818 100644 --- a/Documentation/devicetree/bindings/ata/ahci-platform.txt +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -17,7 +17,6 @@ Required properties: - "marvell,armada-380-ahci" - "marvell,armada-3700-ahci" - "snps,dwc-ahci" - - "snps,exynos5440-ahci" - "snps,spear-ahci" - "generic-ahci" - interrupts : <interrupt mapping for SATA IRQ> diff --git a/Documentation/devicetree/bindings/bus/sun50i-de2-bus.txt b/Documentation/devicetree/bindings/bus/sun50i-de2-bus.txt new file mode 100644 index 000000000000..87dfb33fb3be --- /dev/null +++ b/Documentation/devicetree/bindings/bus/sun50i-de2-bus.txt @@ -0,0 +1,37 @@ +Device tree bindings for Allwinner A64 DE2 bus + +The Allwinner A64 DE2 is on a special bus, which needs a SRAM region (SRAM C) +to be claimed for enabling the access. + +Required properties: + + - compatible: Should contain "allwinner,sun50i-a64-de2" + - reg: A resource specifier for the register space + - #address-cells: Must be set to 1 + - #size-cells: Must be set to 1 + - ranges: Must be set up to map the address space inside the + DE2, for the sub-blocks of DE2. + - allwinner,sram: the SRAM that needs to be claimed + +Example: + + de2@1000000 { + compatible = "allwinner,sun50i-a64-de2"; + reg = <0x1000000 0x400000>; + allwinner,sram = <&de2_sram 1>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x1000000 0x400000>; + + display_clocks: clock@0 { + compatible = "allwinner,sun50i-a64-de2-clk"; + reg = <0x0 0x100000>; + clocks = <&ccu CLK_DE>, + <&ccu CLK_BUS_DE>; + clock-names = "mod", + "bus"; + resets = <&ccu RST_BUS_DE>; + #clock-cells = <1>; + #reset-cells = <1>; + }; + }; diff --git a/Documentation/devicetree/bindings/bus/ti-sysc.txt b/Documentation/devicetree/bindings/bus/ti-sysc.txt index d8ed5b780ed9..91dc2333af01 100644 --- a/Documentation/devicetree/bindings/bus/ti-sysc.txt +++ b/Documentation/devicetree/bindings/bus/ti-sysc.txt @@ -36,6 +36,7 @@ Required standard properties: "ti,sysc-omap-aes" "ti,sysc-mcasp" "ti,sysc-usb-host-fs" + "ti,sysc-dra7-mcan" - reg shall have register areas implemented for the interconnect target module in question such as revision, sysc and syss diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index 09968ee224d8..8f8f95056f3d 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -17,14 +17,13 @@ Required properties: "atmel,at91sam9x5-clk-slow-rc-osc": at91 internal slow RC oscillator - "atmel,at91rm9200-pmc" or - "atmel,at91sam9g45-pmc" or - "atmel,at91sam9n12-pmc" or - "atmel,at91sam9x5-pmc" or - "atmel,sama5d3-pmc": + "atmel,<chip>-pmc": at91 PMC (Power Management Controller) All at91 specific clocks (clocks defined below) must be child node of the PMC node. + <chip> can be: at91rm9200, at91sam9260, at91sam9261, + at91sam9263, at91sam9g45, at91sam9n12, at91sam9rl, at91sam9x5, + sama5d2, sama5d3 or sama5d4. "atmel,at91sam9x5-clk-slow" (under sckc node) or diff --git a/Documentation/devicetree/bindings/clock/exynos5440-clock.txt b/Documentation/devicetree/bindings/clock/exynos5440-clock.txt deleted file mode 100644 index c7d227c31e95..000000000000 --- a/Documentation/devicetree/bindings/clock/exynos5440-clock.txt +++ /dev/null @@ -1,28 +0,0 @@ -* Samsung Exynos5440 Clock Controller - -The Exynos5440 clock controller generates and supplies clock to various -controllers within the Exynos5440 SoC. - -Required Properties: - -- compatible: should be "samsung,exynos5440-clock". - -- reg: physical base address of the controller and length of memory mapped - region. - -- #clock-cells: should be 1. - -Each clock is assigned an identifier and client nodes can use this identifier -to specify the clock which they consume. - -All available clocks are defined as preprocessor macros in -dt-bindings/clock/exynos5440.h header and can be used in device -tree sources. - -Example: An example of a clock controller node is listed below. - - clock: clock-controller@10010000 { - compatible = "samsung,exynos5440-clock"; - reg = <0x160000 0x10000>; - #clock-cells = <1>; - }; diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt deleted file mode 100644 index caff1a57436f..000000000000 --- a/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt +++ /dev/null @@ -1,28 +0,0 @@ - -Exynos5440 cpufreq driver -------------------- - -Exynos5440 SoC cpufreq driver for CPU frequency scaling. - -Required properties: -- interrupts: Interrupt to know the completion of cpu frequency change. -- operating-points: Table of frequencies and voltage CPU could be transitioned into, - in the decreasing order. Frequency should be in KHz units and voltage - should be in microvolts. - -Optional properties: -- clock-latency: Clock monitor latency in microsecond. - -All the required listed above must be defined under node cpufreq. - -Example: --------- - cpufreq@160000 { - compatible = "samsung,exynos5440-cpufreq"; - reg = <0x160000 0x1000>; - interrupts = <0 57 0>; - operating-points = < - 1000000 975000 - 800000 925000>; - clock-latency = <100000>; - }; diff --git a/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt b/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt index f79641bd5f18..45ffd6c41748 100644 --- a/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt +++ b/Documentation/devicetree/bindings/display/marvell,pxa2xx-lcdc.txt @@ -10,6 +10,9 @@ Required properties: - interrupts : framebuffer controller interrupt. - clocks: phandle to input clocks +Optional properties: + - lcd-supply: A phandle to a power regulator that controls the LCD voltage. + Required nodes: - port: connection to the LCD panel (see video-interfaces.txt) This node must have its properties bus-width and remote-endpoint set. diff --git a/Documentation/devicetree/bindings/display/marvell,pxa300-gcu.txt b/Documentation/devicetree/bindings/display/marvell,pxa300-gcu.txt new file mode 100644 index 000000000000..9cfae5c4e8ec --- /dev/null +++ b/Documentation/devicetree/bindings/display/marvell,pxa300-gcu.txt @@ -0,0 +1,17 @@ +PXA3xx GCU Controller +--------------------- + +Required properties: + - compatible : "marvell,pxa300-gcu" + - reg : should contain the register range (address and length). + - interrupts : Controller interrupt. + - clocks: phandle to the PXA specific input clock. + +Example for PXA300: + + display-controller@54000000 { + compatible = "marvell,pxa300-gcu"; + reg = <0x54000000 0x1000>; + interrupts = <39>; + clocks = <&clks CLK_PXA300_GCU>; + }; diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt index 53c20cae309f..df5db732138d 100644 --- a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt +++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt @@ -40,6 +40,7 @@ video decode local arbiter, all these ports are according to the video HW. Required properties: - compatible : must be one of the following string: "mediatek,mt2701-m4u" for mt2701 which uses generation one m4u HW. + "mediatek,mt2712-m4u" for mt2712 which uses generation two m4u HW. "mediatek,mt8173-m4u" for mt8173 which uses generation two m4u HW. - reg : m4u register base and size. - interrupts : the interrupt of m4u. @@ -50,8 +51,9 @@ Required properties: according to the local arbiter index, like larb0, larb1, larb2... - iommu-cells : must be 1. This is the mtk_m4u_id according to the HW. Specifies the mtk_m4u_id as defined in - dt-binding/memory/mt2701-larb-port.h for mt2701 and - dt-binding/memory/mt8173-larb-port.h for mt8173 + dt-binding/memory/mt2701-larb-port.h for mt2701, + dt-binding/memory/mt2712-larb-port.h for mt2712, and + dt-binding/memory/mt8173-larb-port.h for mt8173. Example: iommu: iommu@10205000 { diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt index aa614b2d7cab..615abdd0eb0d 100644 --- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt +++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-common.txt @@ -2,8 +2,9 @@ SMI (Smart Multimedia Interface) Common The hardware block diagram please check bindings/iommu/mediatek,iommu.txt -Mediatek SMI have two generations of HW architecture, mt8173 uses the second -generation of SMI HW while mt2701 uses the first generation HW of SMI. +Mediatek SMI have two generations of HW architecture, mt2712 and mt8173 use +the second generation of SMI HW while mt2701 uses the first generation HW of +SMI. There's slight differences between the two SMI, for generation 2, the register which control the iommu port is at each larb's register base. But @@ -15,6 +16,7 @@ not needed for SMI generation 2. Required properties: - compatible : must be one of : "mediatek,mt2701-smi-common" + "mediatek,mt2712-smi-common" "mediatek,mt8173-smi-common" - reg : the register and size of the SMI block. - power-domains : a phandle to the power domain of this local arbiter. diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt index ddf46b8856a5..083155cdc2a0 100644 --- a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt +++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt @@ -4,8 +4,9 @@ The hardware block diagram please check bindings/iommu/mediatek,iommu.txt Required properties: - compatible : must be one of : - "mediatek,mt8173-smi-larb" "mediatek,mt2701-smi-larb" + "mediatek,mt2712-smi-larb" + "mediatek,mt8173-smi-larb" - reg : the register and size of this local arbiter. - mediatek,smi : a phandle to the smi_common node. - power-domains : a phandle to the power domain of this local arbiter. @@ -15,7 +16,7 @@ Required properties: the register. - "smi" : It's the clock for transfer data and command. -Required property for mt2701: +Required property for mt2701 and mt2712: - mediatek,larb-id :the hardware id of this larb. Example: diff --git a/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt index 132e0007d7d6..e9cb3ec5e502 100644 --- a/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt +++ b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt @@ -16,6 +16,8 @@ Required properties: * "allwinner,sun9i-a80-mmc" * "allwinner,sun50i-a64-emmc" * "allwinner,sun50i-a64-mmc" + * "allwinner,sun50i-h6-emmc", "allwinner.sun50i-a64-emmc" + * "allwinner,sun50i-h6-mmc", "allwinner.sun50i-a64-mmc" - reg : mmc controller base registers - clocks : a list with 4 phandle + clock specifier pairs - clock-names : must contain "ahb", "mmc", "output" and "sample" diff --git a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt index cfe724398a12..5bb3a18cc38d 100644 --- a/Documentation/devicetree/bindings/net/dwmac-sun8i.txt +++ b/Documentation/devicetree/bindings/net/dwmac-sun8i.txt @@ -19,8 +19,6 @@ Required properties: - reset-names: must be "stmmaceth" - phy-mode: See ethernet.txt - phy-handle: See ethernet.txt -- #address-cells: shall be 1 -- #size-cells: shall be 0 - syscon: A phandle to the device containing the EMAC or GMAC clock register Optional properties: @@ -86,8 +84,6 @@ emac: ethernet@1c0b000 { reset-names = "stmmaceth"; clocks = <&ccu CLK_BUS_EMAC>; clock-names = "stmmaceth"; - #address-cells = <1>; - #size-cells = <0>; phy-handle = <&int_mii_phy>; phy-mode = "mii"; @@ -137,8 +133,6 @@ emac: ethernet@1c0b000 { reset-names = "stmmaceth"; clocks = <&ccu CLK_BUS_EMAC>; clock-names = "stmmaceth"; - #address-cells = <1>; - #size-cells = <0>; phy-handle = <&ext_rgmii_phy>; phy-mode = "rgmii"; @@ -191,8 +185,6 @@ emac: ethernet@1c0b000 { reset-names = "stmmaceth"; clocks = <&ccu CLK_BUS_EMAC>; clock-names = "stmmaceth"; - #address-cells = <1>; - #size-cells = <0>; phy-handle = <&ext_rgmii_phy>; phy-mode = "rgmii"; diff --git a/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt index 3899d6a557c1..576ad002bc83 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt +++ b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt @@ -16,7 +16,10 @@ modes in device tree. Required properties: -- compatible: Should be "fsl,vf610-ftm-pwm". +- compatible : should be "fsl,<soc>-ftm-pwm" and one of the following + compatible strings: + - "fsl,vf610-ftm-pwm" for PWM compatible with the one integrated on VF610 + - "fsl,imx8qm-ftm-pwm" for PWM compatible with the one integrated on i.MX8QM - reg: Physical base address and length of the controller's registers - #pwm-cells: Should be 3. See pwm.txt in this directory for a description of the cells format. diff --git a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt index ef8bd3cb67ab..991728cb46cb 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt +++ b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt @@ -5,11 +5,13 @@ Required properties: - "mediatek,mt2712-pwm": found on mt2712 SoC. - "mediatek,mt7622-pwm": found on mt7622 SoC. - "mediatek,mt7623-pwm": found on mt7623 SoC. + - "mediatek,mt7628-pwm": found on mt7628 SoC. - reg: physical base address and length of the controller's registers. - #pwm-cells: must be 2. See pwm.txt in this directory for a description of the cell format. - clocks: phandle and clock specifier of the PWM reference clock. - - clock-names: must contain the following: + - clock-names: must contain the following, except for MT7628 which + has no clocks - "top": the top clock generator - "main": clock used by the PWM core - "pwm1-8": the eight per PWM clocks for mt2712 diff --git a/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt index 35a3b9761ee5..e1ef6afbe3a7 100644 --- a/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt +++ b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.txt @@ -12,6 +12,7 @@ Required Properties: - "renesas,pwm-r8a7795": for R-Car H3 - "renesas,pwm-r8a7796": for R-Car M3-W - "renesas,pwm-r8a77965": for R-Car M3-N + - "renesas,pwm-r8a77990": for R-Car E3 - "renesas,pwm-r8a77995": for R-Car D3 - reg: base address and length of the registers block for the PWM. - #pwm-cells: should be 2. See pwm.txt in this directory for a description of diff --git a/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt b/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt new file mode 100644 index 000000000000..510c748656ec --- /dev/null +++ b/Documentation/devicetree/bindings/reset/qcom,aoss-reset.txt @@ -0,0 +1,52 @@ +Qualcomm AOSS Reset Controller +====================================== + +This binding describes a reset-controller found on AOSS-CC (always on subsystem) +for Qualcomm SDM845 SoCs. + +Required properties: +- compatible: + Usage: required + Value type: <string> + Definition: must be: + "qcom,sdm845-aoss-cc" + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: must specify the base address and size of the register + space. + +- #reset-cells: + Usage: required + Value type: <uint> + Definition: must be 1; cell entry represents the reset index. + +Example: + +aoss_reset: reset-controller@c2a0000 { + compatible = "qcom,sdm845-aoss-cc"; + reg = <0xc2a0000 0x31000>; + #reset-cells = <1>; +}; + +Specifying reset lines connected to IP modules +============================================== + +Device nodes that need access to reset lines should +specify them as a reset phandle in their corresponding node as +specified in reset.txt. + +For list of all valid reset indicies see +<dt-bindings/reset/qcom,sdm845-aoss.h> + +Example: + +modem-pil@4080000 { + ... + + resets = <&aoss_reset AOSS_CC_MSS_RESTART>; + reset-names = "mss_restart"; + + ... +}; diff --git a/Documentation/devicetree/bindings/reset/uniphier-reset.txt b/Documentation/devicetree/bindings/reset/uniphier-reset.txt index 93efed629900..101743dda223 100644 --- a/Documentation/devicetree/bindings/reset/uniphier-reset.txt +++ b/Documentation/devicetree/bindings/reset/uniphier-reset.txt @@ -118,3 +118,59 @@ Example: other nodes ... }; + + +USB3 core reset +--------------- + +USB3 core reset belongs to USB3 glue layer. Before using the core reset, +it is necessary to control the clocks and resets to enable this layer. +These clocks and resets should be described in each property. + +Required properties: +- compatible: Should be + "socionext,uniphier-pro4-usb3-reset" - for Pro4 SoC + "socionext,uniphier-pxs2-usb3-reset" - for PXs2 SoC + "socionext,uniphier-ld20-usb3-reset" - for LD20 SoC + "socionext,uniphier-pxs3-usb3-reset" - for PXs3 SoC +- #reset-cells: Should be 1. +- reg: Specifies offset and length of the register set for the device. +- clocks: A list of phandles to the clock gate for USB3 glue layer. + According to the clock-names, appropriate clocks are required. +- clock-names: Should contain + "gio", "link" - for Pro4 SoC + "link" - for others +- resets: A list of phandles to the reset control for USB3 glue layer. + According to the reset-names, appropriate resets are required. +- reset-names: Should contain + "gio", "link" - for Pro4 SoC + "link" - for others + +Example: + + usb-glue@65b00000 { + compatible = "socionext,uniphier-ld20-dwc3-glue", + "simple-mfd"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0x65b00000 0x400>; + + usb_rst: reset@0 { + compatible = "socionext,uniphier-ld20-usb3-reset"; + reg = <0x0 0x4>; + #reset-cells = <1>; + clock-names = "link"; + clocks = <&sys_clk 14>; + reset-names = "link"; + resets = <&sys_rst 14>; + }; + + regulator { + ... + }; + + phy { + ... + }; + ... + }; diff --git a/Documentation/devicetree/bindings/soc/mediatek/pwrap.txt b/Documentation/devicetree/bindings/soc/mediatek/pwrap.txt index bf80e3f96f8c..f9987c30f0d5 100644 --- a/Documentation/devicetree/bindings/soc/mediatek/pwrap.txt +++ b/Documentation/devicetree/bindings/soc/mediatek/pwrap.txt @@ -19,6 +19,7 @@ IP Pairing Required properties in pwrap device node. - compatible: "mediatek,mt2701-pwrap" for MT2701/7623 SoCs + "mediatek,mt6797-pwrap" for MT6797 SoCs "mediatek,mt7622-pwrap" for MT7622 SoCs "mediatek,mt8135-pwrap" for MT8135 SoCs "mediatek,mt8173-pwrap" for MT8173 SoCs diff --git a/Documentation/devicetree/bindings/sound/mrvl,pxa-ssp.txt b/Documentation/devicetree/bindings/sound/mrvl,pxa-ssp.txt index 93b982e9419f..feef39b4a4fd 100644 --- a/Documentation/devicetree/bindings/sound/mrvl,pxa-ssp.txt +++ b/Documentation/devicetree/bindings/sound/mrvl,pxa-ssp.txt @@ -17,20 +17,18 @@ Example: /* upstream device */ - ssp0: ssp@41000000 { + ssp1: ssp@41000000 { compatible = "mrvl,pxa3xx-ssp"; reg = <0x41000000 0x40>; interrupts = <24>; clock-names = "pxa27x-ssp.0"; - dmas = <&dma 13 - &dma 14>; - dma-names = "rx", "tx"; }; /* DAI as user */ ssp_dai0: ssp_dai@0 { compatible = "mrvl,pxa-ssp-dai"; - port = <&ssp0>; + port = <&ssp1>; + #sound-dai-cells = <0>; }; diff --git a/Documentation/devicetree/bindings/sram/sunxi-sram.txt b/Documentation/devicetree/bindings/sram/sunxi-sram.txt index d087f04a4d7f..c51ade86578c 100644 --- a/Documentation/devicetree/bindings/sram/sunxi-sram.txt +++ b/Documentation/devicetree/bindings/sram/sunxi-sram.txt @@ -10,8 +10,14 @@ Controller Node Required properties: - compatible : should be: - - "allwinner,sun4i-a10-sram-controller" - - "allwinner,sun50i-a64-sram-controller" + - "allwinner,sun4i-a10-sram-controller" (deprecated) + - "allwinner,sun4i-a10-system-control" + - "allwinner,sun5i-a13-system-control" + - "allwinner,sun7i-a20-system-control", "allwinner,sun4i-a10-system-control" + - "allwinner,sun8i-a23-system-control" + - "allwinner,sun8i-h3-system-control" + - "allwinner,sun50i-a64-sram-controller" (deprecated) + - "allwinner,sun50i-a64-system-control" - reg : sram controller register offset + length SRAM nodes @@ -26,8 +32,25 @@ once again the representation described in the mmio-sram binding. The valid sections compatible for A10 are: - allwinner,sun4i-a10-sram-a3-a4 + - allwinner,sun4i-a10-sram-c1 - allwinner,sun4i-a10-sram-d +The valid sections compatible for A13 are: + - allwinner,sun5i-a13-sram-a3-a4, allwinner,sun4i-a10-sram-a3-a4 + - allwinner,sun5i-a13-sram-c1, allwinner,sun4i-a10-sram-c1 + - allwinner,sun5i-a13-sram-d, allwinner,sun4i-a10-sram-d + +The valid sections compatible for A20 are: + - allwinner,sun7i-a20-sram-a3-a4, allwinner,sun4i-a10-sram-a3-a4 + - allwinner,sun7i-a20-sram-c1, allwinner,sun4i-a10-sram-c1 + - allwinner,sun7i-a20-sram-d, allwinner,sun4i-a10-sram-d + +The valid sections compatible for A23/A33 are: + - allwinner,sun8i-a23-sram-c1, allwinner,sun4i-a10-sram-c1 + +The valid sections compatible for H3 are: + - allwinner,sun8i-h3-sram-c1, allwinner,sun4i-a10-sram-c1 + The valid sections compatible for A64 are: - allwinner,sun50i-a64-sram-c @@ -47,8 +70,8 @@ This valid values for this argument are: Example ------- -sram-controller@1c00000 { - compatible = "allwinner,sun4i-a10-sram-controller"; +system-control@1c00000 { + compatible = "allwinner,sun4i-a10-system-control"; reg = <0x01c00000 0x30>; #address-cells = <1>; #size-cells = <1>; diff --git a/Documentation/devicetree/bindings/timer/ti,davinci-timer.txt b/Documentation/devicetree/bindings/timer/ti,davinci-timer.txt new file mode 100644 index 000000000000..29bf91ccf5b7 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/ti,davinci-timer.txt @@ -0,0 +1,37 @@ +* Device tree bindings for Texas Instruments DaVinci timer + +This document provides bindings for the 64-bit timer in the DaVinci +architecture devices. The timer can be configured as a general-purpose 64-bit +timer, dual general-purpose 32-bit timers. When configured as dual 32-bit +timers, each half can operate in conjunction (chain mode) or independently +(unchained mode) of each other. + +The timer is a free running up-counter and can generate interrupts when the +counter reaches preset counter values. + +Also see ../watchdog/davinci-wdt.txt for timers that are configurable as +watchdog timers. + +Required properties: + +- compatible : should be "ti,da830-timer". +- reg : specifies base physical address and count of the registers. +- interrupts : interrupts generated by the timer. +- interrupt-names: should be "tint12", "tint34", "cmpint0", "cmpint1", + "cmpint2", "cmpint3", "cmpint4", "cmpint5", "cmpint6", + "cmpint7" ("cmpintX" may be omitted if not present in the + hardware). +- clocks : the clock feeding the timer clock. + +Example: + + clocksource: timer@20000 { + compatible = "ti,da830-timer"; + reg = <0x20000 0x1000>; + interrupts = <21>, <22>, <74>, <75>, <76>, <77>, <78>, <79>, + <80>, <81>; + interrupt-names = "tint12", "tint34", "cmpint0", "cmpint1", + "cmpint2", "cmpint3", "cmpint4", "cmpint5", + "cmpint6", "cmpint7"; + clocks = <&pll0_auxclk>; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 2f3620547249..2c3fc512e746 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -142,6 +142,7 @@ geekbuying GeekBuying gef GE Fanuc Intelligent Platforms Embedded Systems, Inc. GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc. geniatech Geniatech, Inc. +giantec Giantec Semiconductor, Inc. giantplus Giantplus Technology Co., Ltd. globalscale Globalscale Technologies, Inc. gmt Global Mixed-mode Technology, Inc. @@ -200,6 +201,7 @@ koe Kaohsiung Opto-Electronics Inc. kosagi Sutajio Ko-Usagi PTE Ltd. kyo Kyocera Corporation lacie LaCie +laird Laird PLC lantiq Lantiq Semiconductor lattice Lattice Semiconductor lego LEGO Systems A/S @@ -279,6 +281,7 @@ opalkelly Opal Kelly Incorporated opencores OpenCores.org openrisc OpenRISC.io option Option NV +oranth Shenzhen Oranth Technology Co., Ltd. ORCL Oracle Corporation orisetech Orise Technology ortustech Ortus Technology Co., Ltd. @@ -322,6 +325,7 @@ rohm ROHM Semiconductor Co., Ltd roofull Shenzhen Roofull Technology Co, Ltd samsung Samsung Semiconductor samtec Samtec/Softing company +sancloud Sancloud Ltd sandisk Sandisk Corporation sbs Smart Battery System schindler Schindler @@ -401,6 +405,7 @@ upisemi uPI Semiconductor Corp. urt United Radiant Technology Corporation usi Universal Scientific Industrial Co., Ltd. v3 V3 Semiconductor +vamrs Vamrs Ltd. variscite Variscite Ltd. via VIA Technologies, Inc. virtio Virtual I/O Device Specification, developed by the OASIS consortium diff --git a/Documentation/fb/fbcon.txt b/Documentation/fb/fbcon.txt index d4d642e1ce9c..62af30511a95 100644 --- a/Documentation/fb/fbcon.txt +++ b/Documentation/fb/fbcon.txt @@ -18,9 +18,10 @@ made available by the underlying graphics card are also possible. A. Configuration The framebuffer console can be enabled by using your favorite kernel -configuration tool. It is under Device Drivers->Graphics Support->Support for -framebuffer devices->Framebuffer Console Support. Select 'y' to compile -support statically, or 'm' for module support. The module will be fbcon. +configuration tool. It is under Device Drivers->Graphics Support->Frame +buffer Devices->Console display driver support->Framebuffer Console Support. +Select 'y' to compile support statically or 'm' for module support. The +module will be fbcon. In order for fbcon to activate, at least one framebuffer driver is required, so choose from any of the numerous drivers available. For x86 @@ -29,10 +30,10 @@ always be available. However, using a chipset-specific driver will give you more speed and features, such as the ability to change the video mode dynamically. - To display the penguin logo, choose any logo available in Logo -Configuration->Boot up logo. + To display the penguin logo, choose any logo available in Graphics +support->Bootup logo. - Also, you will need to select at least one compiled-in fonts, but if + Also, you will need to select at least one compiled-in font, but if you don't do anything, the kernel configuration tool will select one for you, usually an 8x16 font. @@ -135,16 +136,16 @@ C. Boot options The angle can be changed anytime afterwards by 'echoing' the same numbers to any one of the 2 attributes found in - /sys/class/graphics/fbcon + /sys/class/graphics/fbcon: rotate - rotate the display of the active console rotate_all - rotate the display of all consoles - Console rotation will only become available if Console Rotation - Support is compiled in your kernel. + Console rotation will only become available if Framebuffer Console + Rotation support is compiled in your kernel. NOTE: This is purely console rotation. Any other applications that - use the framebuffer will remain at their 'normal'orientation. + use the framebuffer will remain at their 'normal' orientation. Actually, the underlying fb driver is totally ignorant of console rotation. @@ -164,7 +165,7 @@ C. Boot options C. Attaching, Detaching and Unloading -Before going on how to attach, detach and unload the framebuffer console, an +Before going on to how to attach, detach and unload the framebuffer console, an illustration of the dependencies may help. The console layer, as with most subsystems, needs a driver that interfaces with @@ -182,7 +183,7 @@ because fbcon is an intermediate layer between the console and the drivers: console ---> fbcon ---> fbdev drivers ---> hardware -The fbdev drivers cannot be unloaded if it's bound to fbcon, and fbcon cannot +The fbdev drivers cannot be unloaded if bound to fbcon, and fbcon cannot be unloaded if it's bound to the console layer. So to unload the fbdev drivers, one must first unbind fbcon from the console, @@ -232,7 +233,7 @@ restored properly. The following is one of the several methods that you can do: echo 0 > /sys/class/vtconsole/vtcon1/bind 6. That's it, you're back to VGA mode. And if you compiled fbcon as a module, - you can unload it by 'rmmod fbcon' + you can unload it by 'rmmod fbcon'. 7. To reattach fbcon: @@ -290,7 +291,7 @@ Samples: ======== Here are 2 sample bash scripts that you can use to bind or unbind the -framebuffer console driver if you are in an X86 box: +framebuffer console driver if you are on an X86 box: --------------------------------------------------------------------------- #!/bin/bash diff --git a/Documentation/hwmon/raspberrypi-hwmon b/Documentation/hwmon/raspberrypi-hwmon new file mode 100644 index 000000000000..3c92e2cb52d6 --- /dev/null +++ b/Documentation/hwmon/raspberrypi-hwmon @@ -0,0 +1,22 @@ +Kernel driver raspberrypi-hwmon +=============================== + +Supported boards: + * Raspberry Pi A+ (via GPIO on SoC) + * Raspberry Pi B+ (via GPIO on SoC) + * Raspberry Pi 2 B (via GPIO on SoC) + * Raspberry Pi 3 B (via GPIO on port expander) + * Raspberry Pi 3 B+ (via PMIC) + +Author: Stefan Wahren <stefan.wahren@i2se.com> + +Description +----------- + +This driver periodically polls a mailbox property of the VC4 firmware to detect +undervoltage conditions. + +Sysfs entries +------------- + +in0_lcrit_alarm Undervoltage alarm diff --git a/Documentation/networking/dpaa2/dpio-driver.rst b/Documentation/networking/dpaa2/dpio-driver.rst new file mode 100644 index 000000000000..13588104161b --- /dev/null +++ b/Documentation/networking/dpaa2/dpio-driver.rst @@ -0,0 +1,158 @@ +.. include:: <isonum.txt> + +DPAA2 DPIO (Data Path I/O) Overview +=================================== + +:Copyright: |copy| 2016-2018 NXP + +This document provides an overview of the Freescale DPAA2 DPIO +drivers + +Introduction +============ + +A DPAA2 DPIO (Data Path I/O) is a hardware object that provides +interfaces to enqueue and dequeue frames to/from network interfaces +and other accelerators. A DPIO also provides hardware buffer +pool management for network interfaces. + +This document provides an overview the Linux DPIO driver, its +subcomponents, and its APIs. + +See Documentation/networking/dpaa2/overview.rst for a general overview of DPAA2 +and the general DPAA2 driver architecture in Linux. + +Driver Overview +--------------- + +The DPIO driver is bound to DPIO objects discovered on the fsl-mc bus and +provides services that: + A) allow other drivers, such as the Ethernet driver, to enqueue and dequeue + frames for their respective objects + B) allow drivers to register callbacks for data availability notifications + when data becomes available on a queue or channel + C) allow drivers to manage hardware buffer pools + +The Linux DPIO driver consists of 3 primary components-- + DPIO object driver-- fsl-mc driver that manages the DPIO object + + DPIO service-- provides APIs to other Linux drivers for services + + QBman portal interface-- sends portal commands, gets responses +:: + + fsl-mc other + bus drivers + | | + +---+----+ +------+-----+ + |DPIO obj| |DPIO service| + | driver |---| (DPIO) | + +--------+ +------+-----+ + | + +------+-----+ + | QBman | + | portal i/f | + +------------+ + | + hardware + + +The diagram below shows how the DPIO driver components fit with the other +DPAA2 Linux driver components:: + +------------+ + | OS Network | + | Stack | + +------------+ +------------+ + | Allocator |. . . . . . . | Ethernet | + |(DPMCP,DPBP)| | (DPNI) | + +-.----------+ +---+---+----+ + . . ^ | + . . <data avail, | |<enqueue, + . . tx confirm> | | dequeue> + +-------------+ . | | + | DPRC driver | . +--------+ +------------+ + | (DPRC) | . . |DPIO obj| |DPIO service| + +----------+--+ | driver |-| (DPIO) | + | +--------+ +------+-----+ + |<dev add/remove> +------|-----+ + | | QBman | + +----+--------------+ | portal i/f | + | MC-bus driver | +------------+ + | | | + | /soc/fsl-mc | | + +-------------------+ | + | + =========================================|=========|======================== + +-+--DPIO---|-----------+ + | | | + | QBman Portal | + +-----------------------+ + + ============================================================================ + + +DPIO Object Driver (dpio-driver.c) +---------------------------------- + + The dpio-driver component registers with the fsl-mc bus to handle objects of + type "dpio". The implementation of probe() handles basic initialization + of the DPIO including mapping of the DPIO regions (the QBman SW portal) + and initializing interrupts and registering irq handlers. The dpio-driver + registers the probed DPIO with dpio-service. + +DPIO service (dpio-service.c, dpaa2-io.h) +------------------------------------------ + + The dpio service component provides queuing, notification, and buffers + management services to DPAA2 drivers, such as the Ethernet driver. A system + will typically allocate 1 DPIO object per CPU to allow queuing operations + to happen simultaneously across all CPUs. + + Notification handling + dpaa2_io_service_register() + + dpaa2_io_service_deregister() + + dpaa2_io_service_rearm() + + Queuing + dpaa2_io_service_pull_fq() + + dpaa2_io_service_pull_channel() + + dpaa2_io_service_enqueue_fq() + + dpaa2_io_service_enqueue_qd() + + dpaa2_io_store_create() + + dpaa2_io_store_destroy() + + dpaa2_io_store_next() + + Buffer pool management + dpaa2_io_service_release() + + dpaa2_io_service_acquire() + +QBman portal interface (qbman-portal.c) +--------------------------------------- + + The qbman-portal component provides APIs to do the low level hardware + bit twiddling for operations such as: + -initializing Qman software portals + + -building and sending portal commands + + -portal interrupt configuration and processing + + The qbman-portal APIs are not public to other drivers, and are + only used by dpio-service. + +Other (dpaa2-fd.h, dpaa2-global.h) +---------------------------------- + + Frame descriptor and scatter-gather definitions and the APIs used to + manipulate them are defined in dpaa2-fd.h. + + Dequeue result struct and parsing APIs are defined in dpaa2-global.h. diff --git a/Documentation/networking/dpaa2/index.rst b/Documentation/networking/dpaa2/index.rst index 4c6586c87969..10bea113a7bc 100644 --- a/Documentation/networking/dpaa2/index.rst +++ b/Documentation/networking/dpaa2/index.rst @@ -6,3 +6,4 @@ DPAA2 Documentation :maxdepth: 1 overview + dpio-driver |