diff options
Diffstat (limited to 'dts/Bindings/i2c')
| -rw-r--r-- | dts/Bindings/i2c/brcm,brcmstb-i2c.yaml | 97 | ||||
| -rw-r--r-- | dts/Bindings/i2c/i2c-at91.txt | 10 | ||||
| -rw-r--r-- | dts/Bindings/i2c/i2c-brcmstb.txt | 26 | ||||
| -rw-r--r-- | dts/Bindings/i2c/i2c-rk3x.txt | 68 | ||||
| -rw-r--r-- | dts/Bindings/i2c/i2c-rk3x.yaml | 136 | ||||
| -rw-r--r-- | dts/Bindings/i2c/i2c-uniphier-f.txt | 25 | ||||
| -rw-r--r-- | dts/Bindings/i2c/i2c-uniphier.txt | 25 | ||||
| -rw-r--r-- | dts/Bindings/i2c/socionext,uniphier-fi2c.yaml | 50 | ||||
| -rw-r--r-- | dts/Bindings/i2c/socionext,uniphier-i2c.yaml | 50 |
9 files changed, 343 insertions, 144 deletions
diff --git a/dts/Bindings/i2c/brcm,brcmstb-i2c.yaml b/dts/Bindings/i2c/brcm,brcmstb-i2c.yaml new file mode 100644 index 0000000000..edbca24761 --- /dev/null +++ b/dts/Bindings/i2c/brcm,brcmstb-i2c.yaml @@ -0,0 +1,97 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/brcm,brcmstb-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom STB BSC IIC Master Controller + +maintainers: + - Kamal Dasu <kdasu.kdev@gmail.com> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + enum: + - brcm,bcm2711-hdmi-i2c + - brcm,brcmstb-i2c + - brcm,brcmper-i2c + + reg: + minItems: 1 + maxItems: 2 + items: + - description: BSC register range + - description: Auto-I2C register range + + reg-names: + items: + - const: bsc + - const: auto-i2c + + interrupts: + maxItems: 1 + + interrupt-names: + maxItems: 1 + + clock-frequency: + enum: + - 46875 + - 50000 + - 93750 + - 97500 + - 187500 + - 200000 + - 375000 + - 390000 + +required: + - compatible + - reg + - clock-frequency + +unevaluatedProperties: false + +if: + properties: + compatible: + contains: + enum: + - brcm,bcm2711-hdmi-i2c + +then: + properties: + reg: + minItems: 2 + + required: + - reg-names + +else: + properties: + reg: + maxItems: 1 + +examples: + - | + bsca: i2c@f0406200 { + clock-frequency = <390000>; + compatible = "brcm,brcmstb-i2c"; + interrupt-parent = <&irq0_intc>; + reg = <0xf0406200 0x58>; + interrupts = <0x18>; + interrupt-names = "upg_bsca"; + }; + + - | + ddc0: i2c@7ef04500 { + compatible = "brcm,bcm2711-hdmi-i2c"; + reg = <0x7ef04500 0x100>, <0x7ef00b00 0x300>; + reg-names = "bsc", "auto-i2c"; + clock-frequency = <390000>; + }; + +... diff --git a/dts/Bindings/i2c/i2c-at91.txt b/dts/Bindings/i2c/i2c-at91.txt index d4bad86107..96c914e048 100644 --- a/dts/Bindings/i2c/i2c-at91.txt +++ b/dts/Bindings/i2c/i2c-at91.txt @@ -28,8 +28,13 @@ Optional properties: "atmel,sama5d4-i2c", "atmel,sama5d2-i2c", "microchip,sam9x60-i2c". +- scl-gpios: specify the gpio related to SCL pin +- sda-gpios: specify the gpio related to SDA pin +- pinctrl: add extra pinctrl to configure i2c pins to gpio function for i2c + bus recovery, call it "gpio" state - Child nodes conforming to i2c bus binding + Examples : i2c0: i2c@fff84000 { @@ -64,6 +69,11 @@ i2c0: i2c@f8034600 { clocks = <&flx0>; atmel,fifo-size = <16>; i2c-sda-hold-time-ns = <336>; + pinctrl-names = "default", "gpio"; + pinctrl-0 = <&pinctrl_i2c0>; + pinctrl-1 = <&pinctrl_i2c0_gpio>; + sda-gpios = <&pioA 30 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA 31 GPIO_ACTIVE_HIGH>; wm8731: wm8731@1a { compatible = "wm8731"; diff --git a/dts/Bindings/i2c/i2c-brcmstb.txt b/dts/Bindings/i2c/i2c-brcmstb.txt deleted file mode 100644 index 0380609b17..0000000000 --- a/dts/Bindings/i2c/i2c-brcmstb.txt +++ /dev/null @@ -1,26 +0,0 @@ -Broadcom stb bsc iic master controller - -Required properties: - -- compatible: should be "brcm,brcmstb-i2c" or "brcm,brcmper-i2c" -- clock-frequency: 32-bit decimal value of iic master clock freqency in Hz - valid values are 375000, 390000, 187500, 200000 - 93750, 97500, 46875 and 50000 -- reg: specifies the base physical address and size of the registers - -Optional properties : - -- interrupts: specifies the interrupt number, the irq line to be used -- interrupt-names: Interrupt name string - -Example: - -bsca: i2c@f0406200 { - clock-frequency = <390000>; - compatible = "brcm,brcmstb-i2c"; - interrupt-parent = <&irq0_intc>; - reg = <0xf0406200 0x58>; - interrupts = <0x18>; - interrupt-names = "upg_bsca"; -}; - diff --git a/dts/Bindings/i2c/i2c-rk3x.txt b/dts/Bindings/i2c/i2c-rk3x.txt deleted file mode 100644 index 22f2eeb2c4..0000000000 --- a/dts/Bindings/i2c/i2c-rk3x.txt +++ /dev/null @@ -1,68 +0,0 @@ -* Rockchip RK3xxx I2C controller - -This driver interfaces with the native I2C controller present in Rockchip -RK3xxx SoCs. - -Required properties : - - - reg : Offset and length of the register set for the device - - compatible: should be one of the following: - - "rockchip,rv1108-i2c": for rv1108 - - "rockchip,rk3066-i2c": for rk3066 - - "rockchip,rk3188-i2c": for rk3188 - - "rockchip,rk3228-i2c": for rk3228 - - "rockchip,rk3288-i2c": for rk3288 - - "rockchip,rk3328-i2c", "rockchip,rk3399-i2c": for rk3328 - - "rockchip,rk3399-i2c": for rk3399 - - interrupts : interrupt number - - clocks: See ../clock/clock-bindings.txt - - For older hardware (rk3066, rk3188, rk3228, rk3288): - - There is one clock that's used both to derive the functional clock - for the device and as the bus clock. - - For newer hardware (rk3399): specified by name - - "i2c": This is used to derive the functional clock. - - "pclk": This is the bus clock. - -Required on RK3066, RK3188 : - - - rockchip,grf : the phandle of the syscon node for the general register - file (GRF) - - on those SoCs an alias with the correct I2C bus ID (bit offset in the GRF) - is also required. - -Optional properties : - - - clock-frequency : SCL frequency to use (in Hz). If omitted, 100kHz is used. - - i2c-scl-rising-time-ns : Number of nanoseconds the SCL signal takes to rise - (t(r) in I2C specification). If not specified this is assumed to be - the maximum the specification allows(1000 ns for Standard-mode, - 300 ns for Fast-mode) which might cause slightly slower communication. - - i2c-scl-falling-time-ns : Number of nanoseconds the SCL signal takes to fall - (t(f) in the I2C specification). If not specified this is assumed to - be the maximum the specification allows (300 ns) which might cause - slightly slower communication. - - i2c-sda-falling-time-ns : Number of nanoseconds the SDA signal takes to fall - (t(f) in the I2C specification). If not specified we'll use the SCL - value since they are the same in nearly all cases. - -Example: - -aliases { - i2c0 = &i2c0; -} - -i2c0: i2c@2002d000 { - compatible = "rockchip,rk3188-i2c"; - reg = <0x2002d000 0x1000>; - interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; - #address-cells = <1>; - #size-cells = <0>; - - rockchip,grf = <&grf>; - - clock-names = "i2c"; - clocks = <&cru PCLK_I2C0>; - - i2c-scl-rising-time-ns = <800>; - i2c-scl-falling-time-ns = <100>; -}; diff --git a/dts/Bindings/i2c/i2c-rk3x.yaml b/dts/Bindings/i2c/i2c-rk3x.yaml new file mode 100644 index 0000000000..61eac76c84 --- /dev/null +++ b/dts/Bindings/i2c/i2c-rk3x.yaml @@ -0,0 +1,136 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/i2c-rk3x.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip RK3xxx I2C controller + +description: + This driver interfaces with the native I2C controller present in Rockchip + RK3xxx SoCs. + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +maintainers: + - Heiko Stuebner <heiko@sntech.de> + +# Everything else is described in the common file +properties: + compatible: + oneOf: + - const: rockchip,rv1108-i2c + - const: rockchip,rk3066-i2c + - const: rockchip,rk3188-i2c + - const: rockchip,rk3228-i2c + - const: rockchip,rk3288-i2c + - const: rockchip,rk3399-i2c + - items: + - enum: + - rockchip,rk3036-i2c + - rockchip,rk3368-i2c + - const: rockchip,rk3288-i2c + - items: + - enum: + - rockchip,px30-i2c + - rockchip,rk3308-i2c + - rockchip,rk3328-i2c + - const: rockchip,rk3399-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 1 + items: + - description: + For older hardware (rk3066, rk3188, rk3228, rk3288) + there is one clock that is used both to derive the functional clock + for the device and as the bus clock. + For newer hardware (rk3399) this clock is used to derive + the functional clock + - description: + For newer hardware (rk3399) this is the bus clock + + clock-names: + minItems: 1 + items: + - const: i2c + - const: pclk + + rockchip,grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Required on RK3066, RK3188 the phandle of the syscon node for + the general register file (GRF) + On those SoCs an alias with the correct I2C bus ID + (bit offset in the GRF) is also required. + + clock-frequency: + default: 100000 + description: + SCL frequency to use (in Hz). If omitted, 100kHz is used. + + i2c-scl-rising-time-ns: + default: 1000 + description: + Number of nanoseconds the SCL signal takes to rise + (t(r) in I2C specification). If not specified this is assumed to be + the maximum the specification allows(1000 ns for Standard-mode, + 300 ns for Fast-mode) which might cause slightly slower communication. + + i2c-scl-falling-time-ns: + default: 300 + description: + Number of nanoseconds the SCL signal takes to fall + (t(f) in the I2C specification). If not specified this is assumed to + be the maximum the specification allows (300 ns) which might cause + slightly slower communication. + + i2c-sda-falling-time-ns: + default: 300 + description: + Number of nanoseconds the SDA signal takes to fall + (t(f) in the I2C specification). If not specified we will use the SCL + value since they are the same in nearly all cases. + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +if: + properties: + compatible: + contains: + enum: + - rockchip,rk3066-i2c + - rockchip,rk3188-i2c + +then: + required: + - rockchip,grf + +examples: + - | + #include <dt-bindings/clock/rk3188-cru-common.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + i2c0: i2c@2002d000 { + compatible = "rockchip,rk3188-i2c"; + reg = <0x2002d000 0x1000>; + interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru PCLK_I2C0>; + clock-names = "i2c"; + rockchip,grf = <&grf>; + i2c-scl-falling-time-ns = <100>; + i2c-scl-rising-time-ns = <800>; + #address-cells = <1>; + #size-cells = <0>; + }; diff --git a/dts/Bindings/i2c/i2c-uniphier-f.txt b/dts/Bindings/i2c/i2c-uniphier-f.txt deleted file mode 100644 index 27fc6f8c79..0000000000 --- a/dts/Bindings/i2c/i2c-uniphier-f.txt +++ /dev/null @@ -1,25 +0,0 @@ -UniPhier I2C controller (FIFO-builtin) - -Required properties: -- compatible: should be "socionext,uniphier-fi2c". -- #address-cells: should be 1. -- #size-cells: should be 0. -- reg: offset and length of the register set for the device. -- interrupts: a single interrupt specifier. -- clocks: phandle to the input clock. - -Optional properties: -- clock-frequency: desired I2C bus frequency in Hz. The maximum supported - value is 400000. Defaults to 100000 if not specified. - -Examples: - - i2c0: i2c@58780000 { - compatible = "socionext,uniphier-fi2c"; - reg = <0x58780000 0x80>; - #address-cells = <1>; - #size-cells = <0>; - interrupts = <0 41 4>; - clocks = <&i2c_clk>; - clock-frequency = <100000>; - }; diff --git a/dts/Bindings/i2c/i2c-uniphier.txt b/dts/Bindings/i2c/i2c-uniphier.txt deleted file mode 100644 index 26f9d95b34..0000000000 --- a/dts/Bindings/i2c/i2c-uniphier.txt +++ /dev/null @@ -1,25 +0,0 @@ -UniPhier I2C controller (FIFO-less) - -Required properties: -- compatible: should be "socionext,uniphier-i2c". -- #address-cells: should be 1. -- #size-cells: should be 0. -- reg: offset and length of the register set for the device. -- interrupts: a single interrupt specifier. -- clocks: phandle to the input clock. - -Optional properties: -- clock-frequency: desired I2C bus frequency in Hz. The maximum supported - value is 400000. Defaults to 100000 if not specified. - -Examples: - - i2c0: i2c@58400000 { - compatible = "socionext,uniphier-i2c"; - reg = <0x58400000 0x40>; - #address-cells = <1>; - #size-cells = <0>; - interrupts = <0 41 1>; - clocks = <&i2c_clk>; - clock-frequency = <100000>; - }; diff --git a/dts/Bindings/i2c/socionext,uniphier-fi2c.yaml b/dts/Bindings/i2c/socionext,uniphier-fi2c.yaml new file mode 100644 index 0000000000..15abc02296 --- /dev/null +++ b/dts/Bindings/i2c/socionext,uniphier-fi2c.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/socionext,uniphier-fi2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: UniPhier I2C controller (FIFO-builtin) + +maintainers: + - Masahiro Yamada <yamada.masahiro@socionext.com> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + const: socionext,uniphier-fi2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: + minimum: 100000 + maximum: 400000 + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - interrupts + - clocks + +examples: + - | + i2c0: i2c@58780000 { + compatible = "socionext,uniphier-fi2c"; + reg = <0x58780000 0x80>; + #address-cells = <1>; + #size-cells = <0>; + interrupts = <0 41 4>; + clocks = <&i2c_clk>; + clock-frequency = <100000>; + }; diff --git a/dts/Bindings/i2c/socionext,uniphier-i2c.yaml b/dts/Bindings/i2c/socionext,uniphier-i2c.yaml new file mode 100644 index 0000000000..ef998def55 --- /dev/null +++ b/dts/Bindings/i2c/socionext,uniphier-i2c.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/socionext,uniphier-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: UniPhier I2C controller (FIFO-less) + +maintainers: + - Masahiro Yamada <yamada.masahiro@socionext.com> + +allOf: + - $ref: /schemas/i2c/i2c-controller.yaml# + +properties: + compatible: + const: socionext,uniphier-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-frequency: + minimum: 100000 + maximum: 400000 + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + - interrupts + - clocks + +examples: + - | + i2c0: i2c@58400000 { + compatible = "socionext,uniphier-i2c"; + reg = <0x58400000 0x40>; + #address-cells = <1>; + #size-cells = <0>; + interrupts = <0 41 1>; + clocks = <&i2c_clk>; + clock-frequency = <100000>; + }; |