# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/pinctrl/mediatek,mt8188-pinctrl.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: MediaTek MT8188 Pin Controller maintainers: - Hui Liu description: The MediaTek's MT8188 Pin controller is used to control SoC pins. properties: compatible: const: mediatek,mt8188-pinctrl gpio-controller: true '#gpio-cells': description: Number of cells in GPIO specifier, should be two. The first cell is the pin number, the second cell is used to specify optional parameters which are defined in . const: 2 gpio-ranges: maxItems: 1 gpio-line-names: true reg: items: - description: gpio registers base address - description: rm group io configuration registers base address - description: lt group io configuration registers base address - description: lm group io configuration registers base address - description: rt group io configuration registers base address - description: eint registers base address reg-names: items: - const: iocfg0 - const: iocfg_rm - const: iocfg_lt - const: iocfg_lm - const: iocfg_rt - const: eint interrupt-controller: true '#interrupt-cells': const: 2 interrupts: description: The interrupt outputs to sysirq. maxItems: 1 mediatek,rsel-resistance-in-si-unit: type: boolean description: We provide two methods to select the resistance for I2C when pull up or pull down. The first is by RSEL definition value, another one is by resistance value(ohm). This flag is used to identify if the method is resistance(si unit) value. # PIN CONFIGURATION NODES patternProperties: '-pins$': 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 dt-bindings/pinctrl/mediatek,mt8188-pinfunc.h directly, for this SoC. drive-strength: enum: [2, 4, 6, 8, 10, 12, 14, 16] drive-strength-microamp: enum: [125, 250, 500, 1000] bias-pull-down: oneOf: - type: boolean - enum: [100, 101, 102, 103] description: mt8188 pull down PUPD/R0/R1 type define value. - enum: [200, 201, 202, 203, 204, 205, 206, 207] description: mt8188 pull down RSEL type define value. - enum: [75000, 5000] description: mt8188 pull down RSEL type si unit value(ohm). description: | For pull down type is normal, it doesn't need add RSEL & 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 mt8188. For pull down type is RSEL, it can add RSEL define & resistance value(ohm) to set different resistance by identifying property "mediatek,rsel-resistance-in-si-unit". It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001" & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011" & "MTK_PULL_SET_RSEL_100" & "MTK_PULL_SET_RSEL_101" & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111" define in mt8188. It can also support resistance value(ohm) "75000" & "5000" in mt8188. bias-pull-up: oneOf: - type: boolean - enum: [100, 101, 102, 103] description: mt8188 pull up PUPD/R0/R1 type define value. - enum: [200, 201, 202, 203, 204, 205, 206, 207] description: mt8188 pull up RSEL type define value. - enum: [1000, 1500, 2000, 3000, 4000, 5000, 10000, 75000] description: mt8188 pull up RSEL type si unit value(ohm). description: | For pull up type is normal, it don't need add RSEL & 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 mt8188. For pull up type is RSEL, it can add RSEL define & resistance value(ohm) to set different resistance by identifying property "mediatek,rsel-resistance-in-si-unit". It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001" & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011" & "MTK_PULL_SET_RSEL_100" & "MTK_PULL_SET_RSEL_101" & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111" define in mt8188. It can also support resistance value(ohm) "1000" & "1500" & "2000" & "3000" & "4000" & "5000" & "10000" & "75000" in mt8188. 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 pio: pinctrl@10005000 { compatible = "mediatek,mt8188-pinctrl"; reg = <0x10005000 0x1000>, <0x11c00000 0x1000>, <0x11e10000 0x1000>, <0x11e20000 0x1000>, <0x11ea0000 0x1000>, <0x1000b000 0x1000>; reg-names = "iocfg0", "iocfg_rm", "iocfg_lt", "iocfg_lm", "iocfg_rt", "eint"; gpio-controller; #gpio-cells = <2>; gpio-ranges = <&pio 0 0 176>; interrupt-controller; interrupts = ; #interrupt-cells = <2>; pio-pins { pins { pinmux = ; output-low; }; }; spi0-pins { pins-spi { pinmux = , , ; drive-strength = <6>; }; pins-spi-mi { pinmux = ; bias-pull-down = ; }; }; i2c0-pins { pins { pinmux = , ; bias-disable; drive-strength-microamp = <1000>; }; }; };