diff options
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
18 files changed, 649 insertions, 384 deletions
diff --git a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml index 22fc8483256f..4ac61fec90e2 100644 --- a/Documentation/devicetree/bindings/i2c/apple,i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/apple,i2c.yaml @@ -20,9 +20,11 @@ allOf: properties: compatible: - enum: - - apple,t8103-i2c - - apple,i2c + items: + - enum: + - apple,t8103-i2c + - apple,t6000-i2c + - const: apple,i2c reg: maxItems: 1 @@ -40,6 +42,9 @@ properties: used. This frequency is generated by dividing the reference clock. Allowed values are between ref_clk/(16*4) and ref_clk/(16*255). + power-domains: + maxItems: 1 + required: - compatible - reg @@ -51,7 +56,7 @@ unevaluatedProperties: false examples: - | i2c@35010000 { - compatible = "apple,t8103-i2c"; + compatible = "apple,t8103-i2c", "apple,i2c"; reg = <0x35010000 0x4000>; interrupt-parent = <&aic>; interrupts = <0 627 4>; diff --git a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml index ea643e6c3ef5..f597f73ccd87 100644 --- a/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/aspeed,i2c.yaml @@ -63,7 +63,6 @@ examples: i2c0: i2c-bus@40 { #address-cells = <1>; #size-cells = <0>; - #interrupt-cells = <1>; compatible = "aspeed,ast2500-i2c-bus"; reg = <0x40 0x40>; clocks = <&syscon ASPEED_CLK_APB>; diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt deleted file mode 100644 index a8a35df41951..000000000000 --- a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt +++ /dev/null @@ -1,22 +0,0 @@ -Broadcom BCM2835 I2C controller - -Required properties: -- compatible : Should be one of: - "brcm,bcm2711-i2c" - "brcm,bcm2835-i2c" -- reg: Should contain register location and length. -- interrupts: Should contain interrupt. -- clocks : The clock feeding the I2C controller. - -Recommended properties: -- clock-frequency : desired I2C bus clock frequency in Hz. - -Example: - -i2c@7e205000 { - compatible = "brcm,bcm2835-i2c"; - reg = <0x7e205000 0x1000>; - interrupts = <2 21>; - clocks = <&clk_i2c>; - clock-frequency = <100000>; -}; diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml new file mode 100644 index 000000000000..8256490a7af2 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml @@ -0,0 +1,54 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/brcm,bcm2835-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom BCM2835 I2C controller + +maintainers: + - Stephen Warren <swarren@wwwdotorg.org> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + oneOf: + - enum: + - brcm,bcm2835-i2c + - items: + - const: brcm,bcm2711-i2c + - const: brcm,bcm2835-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-names: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: true + +required: + - compatible + - reg + - interrupts + - clocks + +unevaluatedProperties: false + +examples: + - | + i2c@7e205000 { + compatible = "brcm,bcm2835-i2c"; + reg = <0x7e205000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_i2c>; + clock-frequency = <100000>; + }; diff --git a/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml b/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml index b386e4128a79..6e1c70e9275e 100644 --- a/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml +++ b/Documentation/devicetree/bindings/i2c/google,cros-ec-i2c-tunnel.yaml @@ -10,7 +10,6 @@ title: I2C bus that tunnels through the ChromeOS EC (cros-ec) maintainers: - Doug Anderson <dianders@chromium.org> - Benson Leung <bleung@chromium.org> - - Enric Balletbo i Serra <enric.balletbo@collabora.com> description: | On some ChromeOS board designs we've got a connection to the EC diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt b/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt deleted file mode 100644 index 2dbc0b62daa6..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt +++ /dev/null @@ -1,53 +0,0 @@ -* Samsung's High Speed I2C controller - -The Samsung's High Speed I2C controller is used to interface with I2C devices -at various speeds ranging from 100khz to 3.4Mhz. - -Required properties: - - compatible: value should be. - -> "samsung,exynos5-hsi2c", (DEPRECATED) - for i2c compatible with HSI2C available - on Exynos5250 and Exynos5420 SoCs. - -> "samsung,exynos5250-hsi2c", for i2c compatible with HSI2C available - on Exynos5250 and Exynos5420 SoCs. - -> "samsung,exynos5260-hsi2c", for i2c compatible with HSI2C available - on Exynos5260 SoCs. - -> "samsung,exynos7-hsi2c", for i2c compatible with HSI2C available - on Exynos7 SoCs. - - - reg: physical base address of the controller and length of memory mapped - region. - - interrupts: interrupt number to the cpu. - - #address-cells: always 1 (for i2c addresses) - - #size-cells: always 0 - - - Pinctrl: - - pinctrl-0: Pin control group to be used for this controller. - - pinctrl-names: Should contain only one value - "default". - -Optional properties: - - clock-frequency: Desired operating frequency in Hz of the bus. - -> If not specified, the bus operates in fast-speed mode at - at 100khz. - -> If specified, the bus operates in high-speed mode only if the - clock-frequency is >= 1Mhz. - -Example: - -hsi2c@12ca0000 { - compatible = "samsung,exynos5250-hsi2c"; - reg = <0x12ca0000 0x100>; - interrupts = <56>; - clock-frequency = <100000>; - - pinctrl-0 = <&i2c4_bus>; - pinctrl-names = "default"; - - #address-cells = <1>; - #size-cells = <0>; - - s2mps11_pmic@66 { - compatible = "samsung,s2mps11-pmic"; - reg = <0x66>; - }; -}; diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml new file mode 100644 index 000000000000..19874e8b73b9 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml @@ -0,0 +1,133 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-exynos5.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung's High Speed I2C controller + +maintainers: + - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> + +description: | + The Samsung's High Speed I2C controller is used to interface with I2C devices + at various speeds ranging from 100kHz to 3.4MHz. + + In case the HSI2C controller is encapsulated within USI block (it's the case + e.g. for Exynos850 and Exynos Auto V9 SoCs), it might be also necessary to + define USI node in device tree file, choosing "i2c" configuration. Please see + Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml for details. + +properties: + compatible: + oneOf: + - enum: + - samsung,exynos5250-hsi2c # Exynos5250 and Exynos5420 + - samsung,exynos5260-hsi2c # Exynos5260 + - samsung,exynos7-hsi2c # Exynos7 + - samsung,exynosautov9-hsi2c # ExynosAutoV9 and Exynos850 + - const: samsung,exynos5-hsi2c # Exynos5250 and Exynos5420 + deprecated: true + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-frequency: + default: 100000 + description: + Desired operating frequency in Hz of the bus. + + If not specified, the bus operates in fast-speed mode at 100kHz. + + If specified, the bus operates in high-speed mode only if the + clock-frequency is >= 1MHz. + + clocks: + minItems: 1 + items: + - description: I2C operating clock + - description: Bus clock (APB) + + clock-names: + minItems: 1 + items: + - const: hsi2c + - const: hsi2c_pclk + +required: + - compatible + - reg + - interrupts + - clocks + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + - if: + properties: + compatible: + contains: + enum: + - samsung,exynosautov9-hsi2c + + then: + properties: + clocks: + minItems: 2 + + clock-names: + minItems: 2 + + required: + - clock-names + + else: + properties: + clocks: + maxItems: 1 + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/clock/exynos5420.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + hsi2c_8: i2c@12e00000 { + compatible = "samsung,exynos5250-hsi2c"; + reg = <0x12e00000 0x1000>; + interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>; + #address-cells = <1>; + #size-cells = <0>; + clock-frequency = <100000>; + clocks = <&clock CLK_USI4>; + clock-names = "hsi2c"; + + pmic@66 { + /* compatible = "samsung,s2mps11-pmic"; */ + reg = <0x66>; + }; + }; + + - | + #include <dt-bindings/clock/exynos850.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + hsi2c_2: i2c@138c0000 { + compatible = "samsung,exynosautov9-hsi2c"; + reg = <0x138c0000 0xc0>; + interrupts = <GIC_SPI 195 IRQ_TYPE_LEVEL_HIGH>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&cmu_peri CLK_GOUT_HSI2C2_IPCLK>, + <&cmu_peri CLK_GOUT_HSI2C2_PCLK>; + clock-names = "hsi2c", "hsi2c_pclk"; + + pmic@66 { + /* compatible = "samsung,s2mps11-pmic"; */ + reg = <0x66>; + }; + }; diff --git a/Documentation/devicetree/bindings/i2c/i2c-gate.yaml b/Documentation/devicetree/bindings/i2c/i2c-gate.yaml index 66472f12a7e2..bd67b0766599 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-gate.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-gate.yaml @@ -31,7 +31,7 @@ examples: #address-cells = <1>; #size-cells = <0>; ak8975@c { - compatible = "ak,ak8975"; + compatible = "asahi-kasei,ak8975"; reg = <0x0c>; }; }; diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml index fe0c89edf7c1..529bea56d324 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml @@ -20,7 +20,9 @@ properties: - items: - enum: - fsl,imx8qxp-lpi2c + - fsl,imx8dxl-lpi2c - fsl,imx8qm-lpi2c + - fsl,imx8ulp-lpi2c - const: fsl,imx7ulp-lpi2c reg: diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt deleted file mode 100644 index d4cf10582a26..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt +++ /dev/null @@ -1,80 +0,0 @@ -GPIO-based I2C Bus Mux - -This binding describes an I2C bus multiplexer that uses GPIOs to -route the I2C signals. - - +-----+ +-----+ - | dev | | dev | - +------------+ +-----+ +-----+ - | SoC | | | - | | /--------+--------+ - | +------+ | +------+ child bus A, on GPIO value set to 0 - | | I2C |-|--| Mux | - | +------+ | +--+---+ child bus B, on GPIO value set to 1 - | | | \----------+--------+--------+ - | +------+ | | | | | - | | GPIO |-|-----+ +-----+ +-----+ +-----+ - | +------+ | | dev | | dev | | dev | - +------------+ +-----+ +-----+ +-----+ - -Required properties: -- compatible: i2c-mux-gpio -- i2c-parent: The phandle of the I2C bus that this multiplexer's master-side - port is connected to. -- mux-gpios: list of gpios used to control the muxer -* Standard I2C mux properties. See i2c-mux.yaml in this directory. -* I2C child bus nodes. See i2c-mux.yaml in this directory. - -Optional properties: -- idle-state: value to set the muxer to when idle. When no value is - given, it defaults to the last value used. - -For each i2c child node, an I2C child bus will be created. They will -be numbered based on their order in the device tree. - -Whenever an access is made to a device on a child bus, the value set -in the relevant node's reg property will be output using the list of -GPIOs, the first in the list holding the least-significant value. - -If an idle state is defined, using the idle-state (optional) property, -whenever an access is not being made to a device on a child bus, the -GPIOs will be set according to the idle value. - -If an idle state is not defined, the most recently used value will be -left programmed into hardware whenever no access is being made to a -device on a child bus. - -Example: - i2cmux { - compatible = "i2c-mux-gpio"; - #address-cells = <1>; - #size-cells = <0>; - mux-gpios = <&gpio1 22 0 &gpio1 23 0>; - i2c-parent = <&i2c1>; - - i2c@1 { - reg = <1>; - #address-cells = <1>; - #size-cells = <0>; - - ssd1307: oled@3c { - compatible = "solomon,ssd1307fb-i2c"; - reg = <0x3c>; - pwms = <&pwm 4 3000>; - reset-gpios = <&gpio2 7 1>; - }; - }; - - i2c@3 { - reg = <3>; - #address-cells = <1>; - #size-cells = <0>; - - pca9555: pca9555@20 { - compatible = "nxp,pca9555"; - gpio-controller; - #gpio-cells = <2>; - reg = <0x20>; - }; - }; - }; diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml new file mode 100644 index 000000000000..6e0a5686af04 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.yaml @@ -0,0 +1,104 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-mux-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO-based I2C Bus Mux + +maintainers: + - Wolfram Sang <wsa@kernel.org> + +description: | + This binding describes an I2C bus multiplexer that uses GPIOs to route the I2C signals. + + +-----+ +-----+ + | dev | | dev | + +------------+ +-----+ +-----+ + | SoC | | | + | | /--------+--------+ + | +------+ | +------+ child bus A, on GPIO value set to 0 + | | I2C |-|--| Mux | + | +------+ | +--+---+ child bus B, on GPIO value set to 1 + | | | \----------+--------+--------+ + | +------+ | | | | | + | | GPIO |-|-----+ +-----+ +-----+ +-----+ + | +------+ | | dev | | dev | | dev | + +------------+ +-----+ +-----+ +-----+ + + For each I2C child node, an I2C child bus will be created. They will be numbered based on their + order in the device tree. + + Whenever an access is made to a device on a child bus, the value set in the relevant node's reg + property will be output using the list of GPIOs, the first in the list holding the least- + significant value. + + If an idle state is defined, using the idle-state (optional) property, whenever an access is not + being made to a device on a child bus, the GPIOs will be set according to the idle value. + + If an idle state is not defined, the most recently used value will be left programmed into + hardware whenever no access is being made to a device on a child bus. + +properties: + compatible: + const: i2c-mux-gpio + + i2c-parent: + description: phandle of the I2C bus that this multiplexer's master-side port is connected to + $ref: "/schemas/types.yaml#/definitions/phandle" + + mux-gpios: + description: list of GPIOs used to control the muxer + minItems: 1 + maxItems: 4 # Should be enough + + idle-state: + description: Value to set the muxer to when idle. When no value is given, it defaults to the + last value used. + $ref: "/schemas/types.yaml#/definitions/uint32" + +allOf: + - $ref: i2c-mux.yaml + +unevaluatedProperties: false + +required: + - compatible + - i2c-parent + - mux-gpios + +examples: + - | + i2cmux { + compatible = "i2c-mux-gpio"; + #address-cells = <1>; + #size-cells = <0>; + mux-gpios = <&gpio1 22 0>, <&gpio1 23 0>; + i2c-parent = <&i2c1>; + + i2c@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + + ssd1307: oled@3c { + compatible = "solomon,ssd1307fb-i2c"; + reg = <0x3c>; + pwms = <&pwm 4 3000>; + reset-gpios = <&gpio2 7 1>; + }; + }; + + i2c@3 { + reg = <3>; + #address-cells = <1>; + #size-cells = <0>; + + pca9555: pca9555@20 { + compatible = "nxp,pca9555"; + gpio-controller; + #gpio-cells = <2>; + reg = <0x20>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.txt deleted file mode 100644 index 997a287ed3f6..000000000000 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.txt +++ /dev/null @@ -1,93 +0,0 @@ -Pinctrl-based I2C Bus Mux - -This binding describes an I2C bus multiplexer that uses pin multiplexing to -route the I2C signals, and represents the pin multiplexing configuration -using the pinctrl device tree bindings. - - +-----+ +-----+ - | dev | | dev | - +------------------------+ +-----+ +-----+ - | SoC | | | - | /----|------+--------+ - | +---+ +------+ | child bus A, on first set of pins - | |I2C|---|Pinmux| | - | +---+ +------+ | child bus B, on second set of pins - | \----|------+--------+--------+ - | | | | | - +------------------------+ +-----+ +-----+ +-----+ - | dev | | dev | | dev | - +-----+ +-----+ +-----+ - -Required properties: -- compatible: i2c-mux-pinctrl -- i2c-parent: The phandle of the I2C bus that this multiplexer's master-side - port is connected to. - -Also required are: - -* Standard pinctrl properties that specify the pin mux state for each child - bus. See ../pinctrl/pinctrl-bindings.txt. - -* Standard I2C mux properties. See i2c-mux.yaml in this directory. - -* I2C child bus nodes. See i2c-mux.yaml in this directory. - -For each named state defined in the pinctrl-names property, an I2C child bus -will be created. I2C child bus numbers are assigned based on the index into -the pinctrl-names property. - -The only exception is that no bus will be created for a state named "idle". If -such a state is defined, it must be the last entry in pinctrl-names. For -example: - - pinctrl-names = "ddc", "pta", "idle" -> ddc = bus 0, pta = bus 1 - pinctrl-names = "ddc", "idle", "pta" -> Invalid ("idle" not last) - pinctrl-names = "idle", "ddc", "pta" -> Invalid ("idle" not last) - -Whenever an access is made to a device on a child bus, the relevant pinctrl -state will be programmed into hardware. - -If an idle state is defined, whenever an access is not being made to a device -on a child bus, the idle pinctrl state will be programmed into hardware. - -If an idle state is not defined, the most recently used pinctrl state will be -left programmed into hardware whenever no access is being made of a device on -a child bus. - -Example: - - i2cmux { - compatible = "i2c-mux-pinctrl"; - #address-cells = <1>; - #size-cells = <0>; - - i2c-parent = <&i2c1>; - - pinctrl-names = "ddc", "pta", "idle"; - pinctrl-0 = <&state_i2cmux_ddc>; - pinctrl-1 = <&state_i2cmux_pta>; - pinctrl-2 = <&state_i2cmux_idle>; - - i2c@0 { - reg = <0>; - #address-cells = <1>; - #size-cells = <0>; - - eeprom { - compatible = "eeprom"; - reg = <0x50>; - }; - }; - - i2c@1 { - reg = <1>; - #address-cells = <1>; - #size-cells = <0>; - - eeprom { - compatible = "eeprom"; - reg = <0x50>; - }; - }; - }; - diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.yaml new file mode 100644 index 000000000000..2e3d555eb96c --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-pinctrl.yaml @@ -0,0 +1,103 @@ +# SPDX-License-Identifier: GPL-2.0-only +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-mux-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Pinctrl-based I2C Bus Mux + +maintainers: + - Wolfram Sang <wsa@kernel.org> + +description: | + This binding describes an I2C bus multiplexer that uses pin multiplexing to route the I2C + signals, and represents the pin multiplexing configuration using the pinctrl device tree + bindings. + + +-----+ +-----+ + | dev | | dev | + +------------------------+ +-----+ +-----+ + | SoC | | | + | /----|------+--------+ + | +---+ +------+ | child bus A, on first set of pins + | |I2C|---|Pinmux| | + | +---+ +------+ | child bus B, on second set of pins + | \----|------+--------+--------+ + | | | | | + +------------------------+ +-----+ +-----+ +-----+ + | dev | | dev | | dev | + +-----+ +-----+ +-----+ + + For each named state defined in the pinctrl-names property, an I2C child bus will be created. + I2C child bus numbers are assigned based on the index into the pinctrl-names property. + + The only exception is that no bus will be created for a state named "idle". If such a state is + defined, it must be the last entry in pinctrl-names. For example: + + pinctrl-names = "ddc", "pta", "idle" -> ddc = bus 0, pta = bus 1 + pinctrl-names = "ddc", "idle", "pta" -> Invalid ("idle" not last) + pinctrl-names = "idle", "ddc", "pta" -> Invalid ("idle" not last) + + Whenever an access is made to a device on a child bus, the relevant pinctrl state will be + programmed into hardware. + + If an idle state is defined, whenever an access is not being made to a device on a child bus, + the idle pinctrl state will be programmed into hardware. + + If an idle state is not defined, the most recently used pinctrl state will be left programmed + into hardware whenever no access is being made of a device on a child bus. + +properties: + compatible: + const: i2c-mux-pinctrl + + i2c-parent: + $ref: /schemas/types.yaml#/definitions/phandle + description: The phandle of the I2C bus that this multiplexer's master-side port is connected + to. + +allOf: + - $ref: i2c-mux.yaml + +unevaluatedProperties: false + +required: + - compatible + - i2c-parent + +examples: + - | + i2cmux { + compatible = "i2c-mux-pinctrl"; + #address-cells = <1>; + #size-cells = <0>; + + i2c-parent = <&i2c1>; + + pinctrl-names = "ddc", "pta", "idle"; + pinctrl-0 = <&state_i2cmux_ddc>; + pinctrl-1 = <&state_i2cmux_pta>; + pinctrl-2 = <&state_i2cmux_idle>; + + i2c@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + + eeprom@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + }; + }; + + i2c@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + + eeprom@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt deleted file mode 100644 index ab240e10debc..000000000000 --- a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.txt +++ /dev/null @@ -1,42 +0,0 @@ -NVIDIA Tegra186 BPMP I2C controller - -In Tegra186, the BPMP (Boot and Power Management Processor) owns certain HW -devices, such as the I2C controller for the power management I2C bus. Software -running on other CPUs must perform IPC to the BPMP in order to execute -transactions on that I2C bus. This binding describes an I2C bus that is -accessed in such a fashion. - -The BPMP I2C node must be located directly inside the main BPMP node. See -../firmware/nvidia,tegra186-bpmp.txt for details of the BPMP binding. - -This node represents an I2C controller. See ../i2c/i2c.txt for details of the -core I2C binding. - -Required properties: -- compatible: - Array of strings. - One of: - - "nvidia,tegra186-bpmp-i2c". -- #address-cells: Address cells for I2C device address. - Single-cell integer. - Must be <1>. -- #size-cells: - Single-cell integer. - Must be <0>. -- nvidia,bpmp-bus-id: - Single-cell integer. - Indicates the I2C bus number this DT node represent, as defined by the - BPMP firmware. - -Example: - -bpmp { - ... - - i2c { - compatible = "nvidia,tegra186-bpmp-i2c"; - #address-cells = <1>; - #size-cells = <0>; - nvidia,bpmp-bus-id = <5>; - }; -}; diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml new file mode 100644 index 000000000000..b8319dcf3d8a --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra186-bpmp-i2c.yaml @@ -0,0 +1,45 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/nvidia,tegra186-bpmp-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NVIDIA Tegra186 (and later) BPMP I2C controller + +maintainers: + - Thierry Reding <thierry.reding@gmail.com> + - Jon Hunter <jonathanh@nvidia.com> + +description: | + In Tegra186 and later, the BPMP (Boot and Power Management Processor) + owns certain HW devices, such as the I2C controller for the power + management I2C bus. Software running on other CPUs must perform IPC to + the BPMP in order to execute transactions on that I2C bus. This + binding describes an I2C bus that is accessed in such a fashion. + + The BPMP I2C node must be located directly inside the main BPMP node. + See ../firmware/nvidia,tegra186-bpmp.yaml for details of the BPMP + binding. + + This node represents an I2C controller. See ../i2c/i2c.txt for details + of the core I2C binding. + +properties: + compatible: + const: nvidia,tegra186-bpmp-i2c + + nvidia,bpmp-bus-id: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Indicates the I2C bus number this DT node represents, + as defined by the BPMP firmware. + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml + +unevaluatedProperties: false + +required: + - compatible + - "#address-cells" + - "#size-cells" + - nvidia,bpmp-bus-id diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt deleted file mode 100644 index 3f2f990c2e62..000000000000 --- a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.txt +++ /dev/null @@ -1,87 +0,0 @@ -NVIDIA Tegra20/Tegra30/Tegra114 I2C controller driver. - -Required properties: -- compatible : For Tegra20, must be one of "nvidia,tegra20-i2c-dvc" or - "nvidia,tegra20-i2c". For Tegra30, must be "nvidia,tegra30-i2c". - For Tegra114, must be "nvidia,tegra114-i2c". Otherwise, must be - "nvidia,<chip>-i2c", plus at least one of the above, where <chip> is - tegra124, tegra132, or tegra210. - Details of compatible are as follows: - nvidia,tegra20-i2c-dvc: Tegra20 has specific I2C controller called as DVC I2C - controller. This only support master mode of I2C communication. Register - interface/offset and interrupts handling are different than generic I2C - controller. Driver of DVC I2C controller is only compatible with - "nvidia,tegra20-i2c-dvc". - nvidia,tegra20-i2c: Tegra20 has 4 generic I2C controller. This can support - master and slave mode of I2C communication. The i2c-tegra driver only - support master mode of I2C communication. Driver of I2C controller is - only compatible with "nvidia,tegra20-i2c". - nvidia,tegra30-i2c: Tegra30 has 5 generic I2C controller. This controller is - very much similar to Tegra20 I2C controller with additional feature: - Continue Transfer Support. This feature helps to implement M_NO_START - as per I2C core API transfer flags. Driver of I2C controller is - compatible with "nvidia,tegra30-i2c" to enable the continue transfer - support. This is also compatible with "nvidia,tegra20-i2c" without - continue transfer support. - nvidia,tegra114-i2c: Tegra114 has 5 generic I2C controller. This controller is - very much similar to Tegra30 I2C controller with some hardware - modification: - - Tegra30/Tegra20 I2C controller has 2 clock source called div-clk and - fast-clk. Tegra114 has only one clock source called as div-clk and - hence clock mechanism is changed in I2C controller. - - Tegra30/Tegra20 I2C controller has enabled per packet transfer by - default and there is no way to disable it. Tegra114 has this - interrupt disable by default and SW need to enable explicitly. - Due to above changes, Tegra114 I2C driver makes incompatible with - previous hardware driver. Hence, tegra114 I2C controller is compatible - with "nvidia,tegra114-i2c". - nvidia,tegra210-i2c-vi: Tegra210 has one I2C controller that is on host1x bus - and is part of VE power domain and typically used for camera use-cases. - This VI I2C controller is mostly compatible with the programming model - of the regular I2C controllers with a few exceptions. The I2C registers - start at an offset of 0xc00 (instead of 0), registers are 16 bytes - apart (rather than 4) and the controller does not support slave mode. -- reg: Should contain I2C controller registers physical address and length. -- interrupts: Should contain I2C controller interrupts. -- address-cells: Address cells for I2C device address. -- size-cells: Size of the I2C device address. -- clocks: Must contain an entry for each entry in clock-names. - See ../clocks/clock-bindings.txt for details. -- clock-names: Must include the following entries: - Tegra20/Tegra30: - - div-clk - - fast-clk - Tegra114: - - div-clk - Tegra210: - - div-clk - - slow (only for nvidia,tegra210-i2c-vi compatible node) -- resets: Must contain an entry for each entry in reset-names. - See ../reset/reset.txt for details. -- reset-names: Must include the following entries: - - i2c -- power-domains: Only for nvidia,tegra210-i2c-vi compatible node and must - include venc powergate node as vi i2c is part of VE power domain. - tegra210-i2c-vi: - - pd_venc -- dmas: Must contain an entry for each entry in clock-names. - See ../dma/dma.txt for details. -- dma-names: Must include the following entries: - - rx - - tx - -Example: - - i2c@7000c000 { - compatible = "nvidia,tegra20-i2c"; - reg = <0x7000c000 0x100>; - interrupts = <0 38 0x04>; - #address-cells = <1>; - #size-cells = <0>; - clocks = <&tegra_car 12>, <&tegra_car 124>; - clock-names = "div-clk", "fast-clk"; - resets = <&tegra_car 12>; - reset-names = "i2c"; - dmas = <&apbdma 16>, <&apbdma 16>; - dma-names = "rx", "tx"; - }; diff --git a/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml new file mode 100644 index 000000000000..424a4fc218b6 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/nvidia,tegra20-i2c.yaml @@ -0,0 +1,192 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/nvidia,tegra20-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +maintainers: + - Thierry Reding <thierry.reding@gmail.com> + - Jon Hunter <jonathanh@nvidia.com> + +title: NVIDIA Tegra I2C controller driver + +properties: + compatible: + oneOf: + - description: Tegra20 has 4 generic I2C controller. This can support + master and slave mode of I2C communication. The i2c-tegra driver + only support master mode of I2C communication. Driver of I2C + controller is only compatible with "nvidia,tegra20-i2c". + const: nvidia,tegra20-i2c + - description: Tegra20 has specific I2C controller called as DVC I2C + controller. This only support master mode of I2C communication. + Register interface/offset and interrupts handling are different than + generic I2C controller. Driver of DVC I2C controller is only + compatible with "nvidia,tegra20-i2c-dvc". + const: nvidia,tegra20-i2c-dvc + - description: | + Tegra30 has 5 generic I2C controller. This controller is very much + similar to Tegra20 I2C controller with additional feature: Continue + Transfer Support. This feature helps to implement M_NO_START as per + I2C core API transfer flags. Driver of I2C controller is compatible + with "nvidia,tegra30-i2c" to enable the continue transfer support. + This is also compatible with "nvidia,tegra20-i2c" without continue + transfer support. + items: + - const: nvidia,tegra30-i2c + - const: nvidia,tegra20-i2c + - description: | + Tegra114 has 5 generic I2C controllers. This controller is very much + similar to Tegra30 I2C controller with some hardware modification: + - Tegra30/Tegra20 I2C controller has 2 clock source called div-clk + and fast-clk. Tegra114 has only one clock source called as + div-clk and hence clock mechanism is changed in I2C controller. + - Tegra30/Tegra20 I2C controller has enabled per packet transfer + by default and there is no way to disable it. Tegra114 has this + interrupt disable by default and SW need to enable explicitly. + Due to above changes, Tegra114 I2C driver makes incompatible with + previous hardware driver. Hence, Tegra114 I2C controller is + compatible with "nvidia,tegra114-i2c". + const: nvidia,tegra114-i2c + - description: | + Tegra124 has 6 generic I2C controllers. These controllers are very + similar to those found on Tegra114 but also contain several hardware + improvements and new registers. + const: nvidia,tegra124-i2c + - description: | + Tegra210 has 6 generic I2C controllers. These controllers are very + similar to those found on Tegra124. + items: + - const: nvidia,tegra210-i2c + - const: nvidia,tegra124-i2c + - description: | + Tegra210 has one I2C controller that is on host1x bus and is part of + the VE power domain and typically used for camera use-cases. This VI + I2C controller is mostly compatible with the programming model of + the regular I2C controllers with a few exceptions. The I2C registers + start at an offset of 0xc00 (instead of 0), registers are 16 bytes + apart (rather than 4) and the controller does not support slave + mode. + const: nvidia,tegra210-i2c-vi + - description: | + Tegra186 has 9 generic I2C controllers, two of which are in the AON + (always-on) partition of the SoC. All of these controllers are very + similar to those found on Tegra210. + const: nvidia,tegra186-i2c + - description: | + Tegra194 has 8 generic I2C controllers, two of which are in the AON + (always-on) partition of the SoC. All of these controllers are very + similar to those found on Tegra186. However, these controllers have + support for 64 KiB transactions whereas earlier chips supported no + more than 4 KiB per transactions. + const: nvidia,tegra194-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + clocks: + minItems: 1 + maxItems: 2 + + clock-names: + minItems: 1 + maxItems: 2 + + resets: + items: + - description: module reset + + reset-names: + items: + - const: i2c + + dmas: + items: + - description: DMA channel for the reception FIFO + - description: DMA channel for the transmission FIFO + + dma-names: + items: + - const: rx + - const: tx + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml + - if: + properties: + compatible: + contains: + enum: + - nvidia,tegra20-i2c + - nvidia,tegra30-i2c + then: + properties: + clock-names: + items: + - const: div-clk + - const: fast-clk + + - if: + properties: + compatible: + contains: + const: nvidia,tegra114-i2c + then: + properties: + clock-names: + items: + - const: div-clk + + - if: + properties: + compatible: + contains: + const: nvidia,tegra210-i2c + then: + properties: + clock-names: + items: + - const: div-clk + + - if: + properties: + compatible: + contains: + const: nvidia,tegra210-i2c-vi + then: + properties: + clock-names: + items: + - const: div-clk + - const: slow + power-domains: + items: + - description: phandle to the VENC power domain + +unevaluatedProperties: false + +examples: + - | + i2c@7000c000 { + compatible = "nvidia,tegra20-i2c"; + reg = <0x7000c000 0x100>; + interrupts = <0 38 0x04>; + clocks = <&tegra_car 12>, <&tegra_car 124>; + clock-names = "div-clk", "fast-clk"; + resets = <&tegra_car 12>; + reset-names = "i2c"; + dmas = <&apbdma 16>, <&apbdma 16>; + dma-names = "rx", "tx"; + + #address-cells = <1>; + #size-cells = <0>; + }; diff --git a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml index c07289a643d8..46b62e1c9273 100644 --- a/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/st,stm32-i2c.yaml @@ -112,6 +112,9 @@ examples: clocks = <&rcc 0 149>; }; + - | + #include <dt-bindings/mfd/stm32f7-rcc.h> + #include <dt-bindings/clock/stm32fx-clock.h> //Example 2 (with st,stm32f7-i2c compatible) i2c@40005800 { compatible = "st,stm32f7-i2c"; @@ -124,6 +127,9 @@ examples: clocks = <&rcc 1 CLK_I2C1>; }; + - | + #include <dt-bindings/mfd/stm32f7-rcc.h> + #include <dt-bindings/clock/stm32fx-clock.h> //Example 3 (with st,stm32mp15-i2c compatible on stm32mp) #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/clock/stm32mp1-clks.h> |