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+# 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 <hui.liu@mediatek.com>
+
+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 <dt-bindings/gpio/gpio.h>.
+ 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 <dt-bindings/pinctrl/mediatek,mt8188-pinfunc.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ 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 = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH 0>;
+ #interrupt-cells = <2>;
+
+ pio-pins {
+ pins {
+ pinmux = <PINMUX_GPIO0__FUNC_B_GPIO0>;
+ output-low;
+ };
+ };
+
+ spi0-pins {
+ pins-spi {
+ pinmux = <PINMUX_GPIO75__FUNC_O_SPIM1_CSB>,
+ <PINMUX_GPIO76__FUNC_O_SPIM1_CLK>,
+ <PINMUX_GPIO77__FUNC_B0_SPIM1_MOSI>;
+ drive-strength = <6>;
+ };
+ pins-spi-mi {
+ pinmux = <PINMUX_GPIO78__FUNC_B0_SPIM1_MISO>;
+ bias-pull-down = <MTK_PUPD_SET_R1R0_10>;
+ };
+ };
+
+ i2c0-pins {
+ pins {
+ pinmux = <PINMUX_GPIO55__FUNC_B1_SCL0>,
+ <PINMUX_GPIO56__FUNC_B1_SDA0>;
+ bias-disable;
+ drive-strength-microamp = <1000>;
+ };
+ };
+ };
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-18 01:37:47 +0000