From: Cathy Xu Date: Fri, 11 Jul 2025 09:44:57 +0000 (+0800) Subject: dt-bindings: pinctrl: mediatek: Add support for mt8189 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b225010185418d22cb508bd36adc607ac2c28968;p=thirdparty%2Fkernel%2Flinux.git dt-bindings: pinctrl: mediatek: Add support for mt8189 Add the new binding document for pinctrl on MediaTek mt8189. Signed-off-by: Cathy Xu Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Rob Herring (Arm) Link: https://lore.kernel.org/20250711094513.17073-2-ot_cathy.xu@mediatek.com Signed-off-by: Linus Walleij --- diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-pinctrl.yaml new file mode 100644 index 0000000000000..32e4653da5dba --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt8189-pinctrl.yaml @@ -0,0 +1,213 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/mediatek,mt8189-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek MT8189 Pin Controller + +maintainers: + - Lei Xue + - Cathy Xu + +description: + The MediaTek's MT8189 Pin controller is used to control SoC pins. + +properties: + compatible: + const: mediatek,mt8189-pinctrl + + reg: + items: + - description: gpio base + - description: lm group IO + - description: rb0 group IO + - description: rb1 group IO + - description: bm0 group IO + - description: bm1 group IO + - description: bm2 group IO + - description: lt0 group IO + - description: lt1 group IO + - description: rt group IO + - description: eint0 group IO + - description: eint1 group IO + - description: eint2 group IO + - description: eint3 group IO + - description: eint4 group IO + + reg-names: + items: + - const: base + - const: lm + - const: rb0 + - const: rb1 + - const: bm0 + - const: bm1 + - const: bm2 + - const: lt0 + - const: lt1 + - const: rt + - const: eint0 + - const: eint1 + - const: eint2 + - const: eint3 + - const: eint4 + + interrupts: + maxItems: 1 + + interrupt-controller: true + + '#interrupt-cells': + const: 2 + + gpio-controller: true + + '#gpio-cells': + 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/mt8189-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: mt8189 pull down PUPD/R0/R1 type define value. + - enum: [75000, 5000] + description: mt8189 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 mt8189. + + 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". + + bias-pull-up: + oneOf: + - type: boolean + - enum: [100, 101, 102, 103] + description: mt8189 pull up PUPD/R0/R1 type define value. + - enum: [1000, 1500, 2000, 3000, 4000, 5000, 75000] + description: mt8189 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 mt8189. + + 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". + + 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_GPIO51__FUNC_SCL0 (MTK_PIN_NO(51) | 2) + #define PINMUX_GPIO52__FUNC_SDA0 (MTK_PIN_NO(52) | 2) + + pio: pinctrl@10005000 { + compatible = "mediatek,mt8189-pinctrl"; + reg = <0x10005000 0x1000>, + <0x11b50000 0x1000>, + <0x11c50000 0x1000>, + <0x11c60000 0x1000>, + <0x11d20000 0x1000>, + <0x11d30000 0x1000>, + <0x11d40000 0x1000>, + <0x11e20000 0x1000>, + <0x11e30000 0x1000>, + <0x11f20000 0x1000>, + <0x11ce0000 0x1000>, + <0x11de0000 0x1000>, + <0x11e60000 0x1000>, + <0x1c01e000 0x1000>, + <0x11f00000 0x1000>; + reg-names = "base", "lm", "rb0", "rb1", "bm0" , "bm1", + "bm2", "lt0", "lt1", "rt", "eint0", "eint1", + "eint2", "eint3", "eint4"; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pio 0 0 182>; + interrupt-controller; + interrupts = ; + #interrupt-cells = <2>; + + i2c0-pins { + pins { + pinmux = , + ; + bias-disable; + }; + }; + };