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Signed-off-by: Guodong Liu Signed-off-by: Cathy Xu Reviewed-by: Krzysztof Kozlowski --- .../pinctrl/mediatek,mt8196-pinctrl.yaml | 220 ++++++++++++++++++ 1 file changed, 220 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/mediatek,mt8196-pinctrl.yaml diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt8196-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8196-pinctrl.yaml new file mode 100644 index 000000000000..cef7e0321722 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8196-pinctrl.yaml @@ -0,0 +1,220 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/mediatek,mt8196-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek MT8196 Pin Controller + +maintainers: + - Lei Xue + - Cathy Xu + +description: + The MediaTek's MT8196 Pin controller is used to control SoC pins. + +properties: + compatible: + const: mediatek,mt8196-pinctrl + + reg: + items: + - description: gpio base + - description: rt group IO + - description: rm1 group IO + - description: rm2 group IO + - description: rb group IO + - description: bm1 group IO + - description: bm2 group IO + - description: bm3 group IO + - description: lt group IO + - description: lm1 group IO + - description: lm2 group IO + - description: lb1 group IO + - description: lb2 group IO + - description: tm1 group IO + - description: tm2 group IO + - description: tm3 group IO + + reg-names: + items: + - const: base + - const: rt + - const: rm1 + - const: rm2 + - const: rb + - const: bm1 + - const: bm2 + - const: bm3 + - const: lt + - const: lm1 + - const: lm2 + - const: lb1 + - const: lb2 + - const: tm1 + - const: tm2 + - const: tm3 + + interrupts: + description: The interrupt outputs to sysirq. + maxItems: 1 + + interrupt-controller: true + + '#interrupt-cells': + const: 2 + + gpio-controller: true + + '#gpio-cells': + description: + Number of cells in GPIO specifier, should be two. The first cell is the + pin number, the second cell is used to specify optional parameters which + are defined in . + const: 2 + + gpio-ranges: + maxItems: 1 + + gpio-line-names: true + +# PIN CONFIGURATION NODES +patternProperties: + '-pins$': + type: object + additionalProperties: false + + patternProperties: + '^pins': + type: object + $ref: /schemas/pinctrl/pincfg-node.yaml + additionalProperties: false + description: + A pinctrl node should contain at least one subnode representing the + pinctrl groups available on the machine. Each subnode will list the + pins it needs, and how they should be configured, with regard to muxer + configuration, pullups, drive strength, input enable/disable and input + schmitt. + + properties: + pinmux: + description: + Integer array, represents gpio pin number and mux setting. + Supported pin number and mux varies for different SoCs, and are + defined as macros in arch/arm64/boot/dts/mediatek/mt8196-pinfunc.h + directly, for this SoC. + + drive-strength: + enum: [2, 4, 6, 8, 10, 12, 14, 16] + + bias-pull-down: + oneOf: + - type: boolean + - enum: [100, 101, 102, 103] + description: mt8196 pull down PUPD/R0/R1 type define value. + - enum: [75000, 5000] + description: mt8196 pull down RSEL type si unit value(ohm). + description: | + For pull down type is normal, it doesn't need add R1R0 define + and resistance value. + For pull down type is PUPD/R0/R1 type, it can add R1R0 define to + set different resistance. It can support "MTK_PUPD_SET_R1R0_00" & + "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" & + "MTK_PUPD_SET_R1R0_11" define in mt8196. + For pull down type is PD/RSEL, it can add resistance value(ohm) + to set different resistance by identifying property + "mediatek,rsel-resistance-in-si-unit". It can support resistance + value(ohm) "75000" & "5000" in mt8196. + + bias-pull-up: + oneOf: + - type: boolean + - enum: [100, 101, 102, 103] + description: mt8196 pull up PUPD/R0/R1 type define value. + - enum: [1000, 1500, 2000, 3000, 4000, 5000, 75000] + description: mt8196 pull up RSEL type si unit value(ohm). + description: | + For pull up type is normal, it don't need add R1R0 define + and resistance value. + For pull up type is PUPD/R0/R1 type, it can add R1R0 define to + set different resistance. It can support "MTK_PUPD_SET_R1R0_00" & + "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" & + "MTK_PUPD_SET_R1R0_11" define in mt8196. + For pull up type is PU/RSEL, it can add resistance value(ohm) + to set different resistance by identifying property + "mediatek,rsel-resistance-in-si-unit". It can support resistance + value(ohm) "1000" & "1500" & "2000" & "3000" & "4000" & "5000" & + "75000" in mt8196. + + bias-disable: true + + output-high: true + + output-low: true + + input-enable: true + + input-disable: true + + input-schmitt-enable: true + + input-schmitt-disable: true + + required: + - pinmux + +required: + - compatible + - reg + - interrupts + - interrupt-controller + - '#interrupt-cells' + - gpio-controller + - '#gpio-cells' + - gpio-ranges + +additionalProperties: false + +examples: + - | + #include + #include + #define PINMUX_GPIO99__FUNC_SCL0 (MTK_PIN_NO(99) | 1) + #define PINMUX_GPIO100__FUNC_SDA0 (MTK_PIN_NO(100) | 1) + + pio: pinctrl@1002d000 { + compatible = "mediatek,mt8196-pinctrl"; + reg = <0x1002d000 0x1000>, + <0x12000000 0x1000>, + <0x12020000 0x1000>, + <0x12040000 0x1000>, + <0x12060000 0x1000>, + <0x12820000 0x1000>, + <0x12840000 0x1000>, + <0x12860000 0x1000>, + <0x13000000 0x1000>, + <0x13020000 0x1000>, + <0x13040000 0x1000>, + <0x130f0000 0x1000>, + <0x13110000 0x1000>, + <0x13800000 0x1000>, + <0x13820000 0x1000>, + <0x13860000 0x1000>; + reg-names = "base", "rt","rm1", "rm2", "rb", + "bm1", "bm2", "bm3","lt", "lm1", + "lm2","lb1", "lb2", "tm1","tm2", "tm3"; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pio 0 0 271>; + interrupt-controller; + interrupts = ; + #interrupt-cells = <2>; + + i2c0-pins { + pins { + pinmux = , + ; + bias-disable; + }; + }; + };