kernel/linux.git/Documentation/devicetree/bindings/serial, branch v6.1.168

dt-bindings: serial: brcm,bcm7271-uart: Constrain clocks

2025-09-19T14:29:58+00:00

commit ee047e1d85d73496541c54bd4f432c9464e13e65 upstream. Lists should have fixed constraints, because binding must be specific in respect to hardware, thus add missing constraints to number of clocks. Cc: stable Fixes: 88a499cd70d4 ("dt-bindings: Add support for the Broadcom UART driver") Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20250812121630.67072-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: 8250: Make clocks and clock-frequency exclusive

2025-07-06T08:58:01+00:00

commit 09812134071b3941fb81def30b61ed36d3a5dfb5 upstream. The 8250 binding before converting to json-schema states, - clock-frequency : the input clock frequency for the UART or - clocks phandle to refer to the clk used as per Documentation/devicetree for clock-related properties, where "or" indicates these properties shouldn't exist at the same time. Additionally, the behavior of Linux's driver is strange when both clocks and clock-frequency are specified: it ignores clocks and obtains the frequency from clock-frequency, left the specified clocks unclaimed. It may even be disabled, which is undesired most of the time. But "anyOf" doesn't prevent these two properties from coexisting, as it considers the object valid as long as there's at LEAST one match. Let's switch to "oneOf" and disallows the other property if one exists, precisely matching the original binding and avoiding future confusion on the driver's behavior. Fixes: e69f5dc623f9 ("dt-bindings: serial: Convert 8250 to json-schema") Cc: stable Signed-off-by: Yao Zi Reviewed-by: Conor Dooley Link: https://lore.kernel.org/r/20250623093445.62327-1-ziyao@disroot.org Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: rs485: Fix rs485-rts-delay property

2024-12-14T18:54:03+00:00

commit 12b3642b6c242061d3ba84e6e3050c3141ded14c upstream. Code expects array only with 2 items which should be checked. But also item checking is not working as it should likely because of incorrect items description. Fixes: d50f974c4f7f ("dt-bindings: serial: Convert rs485 bindings to json-schema") Signed-off-by: Michal Simek Cc: stable@vger.kernel.org Reviewed-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/820c639b9e22fe037730ed44d1b044cdb6d28b75.1726480384.git.michal.simek@amd.com Signed-off-by: Greg Kroah-Hartman

dt-bindings: sc16is7xx: Add property to change GPIO function

2023-09-06T20:27:02+00:00

commit 4cf478dc5d707e56aefa258c049872eff054a353 upstream. Some variants in this series of UART controllers have GPIO pins that are shared between GPIO and modem control lines. The pin mux mode (GPIO or modem control lines) can be set for each ports (channels) supported by the variant. This adds a property to the device tree to set the GPIO pin mux to modem control lines on selected ports if needed. Cc: stable@vger.kernel.org # 6.1.x Signed-off-by: Hugo Villeneuve Acked-by: Conor Dooley Reviewed-by: Lech Perczak Acked-by: Rob Herring Link: https://lore.kernel.org/r/20230807214556.540627-4-hugo@hugovil.com Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: renesas,scif: Fix 4th IRQ for 4-IRQ SCIFs

2023-04-13T14:55:28+00:00

commit 7b21f329ae0ab6361c0aebfc094db95821490cd1 upstream. The fourth interrupt on SCIF variants with four interrupts (RZ/A1) is the Break interrupt, not the Transmit End interrupt (like on SCI(g)). Update the description and interrupt name to fix this. Fixes: 384d00fae8e51f8f ("dt-bindings: serial: sh-sci: Convert to json-schema") Cc: stable Signed-off-by: Geert Uytterhoeven Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/719d1582e0ebbe3d674e3a48fc26295e1475a4c3.1679046394.git.geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman

Merge tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

2022-10-10T20:13:51+00:00

Pull devicetree updates from Rob Herring: "DT core: - Fix node refcounting in of_find_last_cache_level() - Constify device_node in of_device_compatible_match() - Fix 'dma-ranges' handling in bus controller nodes - Fix handling of initrd start > end - Improve error reporting in of_irq_init() - Taint kernel on DT unittest running - Use strscpy instead of strlcpy - Add a build target, dt_compatible_check, to check for compatible strings used in kernel sources against compatible strings in DT schemas. - Handle DT_SCHEMA_FILES changes when rebuilding DT bindings: - LED bindings for MT6370 PMIC - Convert Mediatek mtk-gce mailbox, MIPS CPU interrupt controller, mt7621 I2C, virtio,pci-iommu, nxp,tda998x, QCom fastrpc, qcom,pdc, and arm,versatile-sysreg to DT schema format - Add nvmem cells to u-boot,env schema - Add more LED_COLOR_ID definitions - Require 'opp-table' uses to be a node - Various schema fixes to match QEMU 'virt' DT usage - Tree wide dropping of redundant 'Device Tree Binding' in schema titles - More (unevaluated|additional)Properties fixes in schema child nodes - Drop various redundant minItems equal to maxItems" * tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (62 commits) of: base: Shift refcount decrement in of_find_last_cache_level() dt-bindings: leds: Add MediaTek MT6370 flashlight dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator dt-bindings: mailbox: Convert mtk-gce to DT schema of: base: make of_device_compatible_match() accept const device node of: Fix "dma-ranges" handling for bus controllers of: fdt: Remove unused struct fdt_scan_status dt-bindings: display: st,stm32-dsi: Handle data-lanes in DSI port node dt-bindings: timer: Add power-domains for TI timer-dm on K3 dt: Add a check for undocumented compatible strings in kernel kbuild: take into account DT_SCHEMA_FILES changes while checking dtbs dt-bindings: interrupt-controller: migrate MIPS CPU interrupt controller text bindings to YAML dt-bindings: i2c: migrate mt7621 text bindings to YAML dt-bindings: power: gpcv2: correct patternProperties dt-bindings: virtio: Convert virtio,pci-iommu to DT schema dt-bindings: timer: arm,arch_timer: Allow dual compatible string dt-bindings: arm: cpus: Add kryo240 compatible dt-bindings: display: bridge: nxp,tda998x: Convert to json-schema dt-bindings: nvmem: u-boot,env: add basic NVMEM cells dt-bindings: remoteproc: qcom,adsp: enforce smd-edge schema ...

Merge tag 'tty-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2022-10-07T23:36:24+00:00

Pull tty/serial driver updates from Greg KH: "Here is the big set of TTY and Serial driver updates for 6.1-rc1. Lots of cleanups in here, no real new functionality this time around, with the diffstat being that we removed more lines than we added! Included in here are: - termios unification cleanups from Al Viro, it's nice to finally get this work done - tty serial transmit cleanups in various drivers in preparation for more cleanup and unification in future releases (that work was not ready for this release) - n_gsm fixes and updates - ktermios cleanups and code reductions - dt bindings json conversions and updates for new devices - some serial driver updates for new devices - lots of other tiny cleanups and janitorial stuff. Full details in the shortlog. All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (102 commits) serial: cpm_uart: Don't request IRQ too early for console port tty: serial: do unlock on a common path in altera_jtaguart_console_putc() tty: serial: unify TX space reads under altera_jtaguart_tx_space() tty: serial: use FIELD_GET() in lqasc_tx_ready() tty: serial: extend lqasc_tx_ready() to lqasc_console_putchar() tty: serial: allow pxa.c to be COMPILE_TESTed serial: stm32: Fix unused-variable warning tty: serial: atmel: Add COMMON_CLK dependency to SERIAL_ATMEL serial: 8250: Fix restoring termios speed after suspend serial: Deassert Transmit Enable on probe in driver-specific way serial: 8250_dma: Convert to use uart_xmit_advance() serial: 8250_omap: Convert to use uart_xmit_advance() MAINTAINERS: Solve warning regarding inexistent atmel-usart binding serial: stm32: Deassert Transmit Enable on ->rs485_config() serial: ar933x: Deassert Transmit Enable on ->rs485_config() tty: serial: atmel: Use FIELD_PREP/FIELD_GET tty: serial: atmel: Make the driver aware of the existence of GCLK tty: serial: atmel: Only divide Clock Divisor if the IP is USART tty: serial: atmel: Separate mode clearing between UART and USART dt-bindings: serial: atmel,at91-usart: Add gclk as a possible USART clock ...

Merge tag 'arm-dt-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2022-10-06T18:13:04+00:00

Pull ARM devicetree updates from Arnd Bergmann: "Most of the changes fall into one of three categories: adding support for additional devices on existing machines, cleaning up issues found by the ongoing conversion to machine-readable bindings, and addressing minor mistakes in the existing DT data. Across SoC vendors, Qualcomm and Freescale stick out as getting the most updates, which corresponds to their dominance in the mobile phone and embedded industrial markets, respectively. There are 636 non-merge changeset in this branch, which is a little lower than most times, but more importantly we only add 36 machine files, which is about half of what we had the past few releases. Eight new SoCs are added, but all of them are variations of already supported SoC families, and most of them come with one reference board design from the SoC vendor: - Mediatek MT8186 is a Chromebook/Tablet type SoC, similar to the MT65xx series of phone SoCs, with two Cortex-A76 and six Cortex-A55 cores. - TI AM62A is another member of the K3 family with Cortex-A53 cores, this one is targetted at Video/Vision processing for industrial and automotive applications. - NXP i.MX8DXL is another chip for this market in the ever-growing i.MX8 family, this one again with two Cortex-A35 cores. - Renesas R-Car H3Ne-1.7G (R8A779MB) and R-Car V3H2 (R8A77980A) are minor updates of R8A77951 and R8A77980, respectively. - Qualcomm IPQ8064-v2.0, IPQ8062 and IPQ8065 are all variants of the IPQ8064 chip, with minimally different features. The AMD Pensando Elba and Apple M1 Ultra SoC support was getting close this time, but in the end did not make the cut. The new machines based on existing SoC support are fairly uneventful: - Sony Xperia 1 IV is a fairly recent phone based on Qualcomm Snapdragon 8 Gen 1. - Three Samsung phones based on Snapdragon 410: Galaxy E5, E7 and Grand Max. These are added for both 32-bit and 64-bit kernels, as they originally shipped running 32-bit code. - Two new servers using AST2600 BMCs: AMD DaytonaX and Ampere Mt. Mitchell - Three new machines based on Rockchips RK3399 and RK3566: Anberic RG353P and RG503, Pine64 Pinephone Pro, Open AI Lab - Multiple NXP i.MX6/i.MX8 based boards: Kontron SL/BL i.MX8MM OSM-S, i.MX8MM Gateworks GW7904, MSC SM2S-IMX8PLUS SoM and carrier board - Two development boards in the Microchip AT91 family: SAMA5D3-EDS and lan966x-pcb8290. - Minor variants of existing boards using Amlogic, Broadcom, Marvell, Rockchips, Freescale Layerscape and Socionext Uniphier SoCs" * tag 'arm-dt-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (617 commits) Revert "ARM: dts: BCM5301X: Add basic PCI controller properties" ARM: dts: s5pv210: correct double "pins" in pinmux node ARM: dts: exynos: fix polarity of VBUS GPIO of Origen arm64: dts: exynos: fix polarity of "enable" line of NFC chip in TM2 arm64: dts: uniphier: Add L2 cache node arm64: dts: uniphier: Remove compatible "snps,dw-pcie" from pcie node arm64: dts: uniphier: Fix opp-table node name for LD20 arm64: dts: uniphier: Add USB-device support for PXs3 reference board arm64: dts: uniphier: Add ahci controller nodes for PXs3 arm64: dts: uniphier: Use GIC interrupt definitions arm64: dts: uniphier: Rename gpio-hog nodes arm64: dts: uniphier: Rename usb-glue node for USB3 to usb-controller arm64: dts: uniphier: Rename usb-phy node for USB2 to usb-controller arm64: dts: uniphier: Rename pvtctl node to thermal-sensor ARM: dts: uniphier: Remove compatible "snps,dw-pcie-ep" from pcie-ep node ARM: dts: uniphier: Move interrupt-parent property to each child node in uniphier-support-card ARM: dts: uniphier: Add ahci controller nodes for PXs2 ARM: dts: uniphier: Add ahci controller nodes for Pro4 ARM: dts: uniphier: Use GIC interrupt definitions ARM: dts: uniphier: Rename gpio-hog node ...

Merge 7e2cd21e02b3 ("Merge tag 'tty-6.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty") into tty-next

2022-09-25T07:22:13+00:00

We need the tty fixes and api additions in this branch. Signed-off-by: Greg Kroah-Hartman

dt-bindings: serial: atmel,at91-usart: Add gclk as a possible USART clock

2022-09-22T14:31:36+00:00

The Devicetree nodes for FLEXCOM's USART can also have an alternative clock source for the baudrate generator (other than the peripheral clock), namely the Generick Clock. Thus make the binding aware of this clock that someone may place in the clock related properties of the USART node. Signed-off-by: Sergiu Moga Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20220922113347.144383-6-sergiu.moga@microchip.com Signed-off-by: Greg Kroah-Hartman