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Diffstat (limited to 'dts/Bindings/pinctrl/mediatek,mt6779-pinctrl.yaml')
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1 files changed, 253 insertions, 0 deletions
diff --git a/dts/Bindings/pinctrl/mediatek,mt6779-pinctrl.yaml b/dts/Bindings/pinctrl/mediatek,mt6779-pinctrl.yaml new file mode 100644 index 0000000000..3bbc00df55 --- /dev/null +++ b/dts/Bindings/pinctrl/mediatek,mt6779-pinctrl.yaml @@ -0,0 +1,253 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/mediatek,mt6779-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek MT6779 Pin Controller + +maintainers: + - Andy Teng <andy.teng@mediatek.com> + - Sean Wang <sean.wang@kernel.org> + +description: + The MediaTek pin controller on MT6779 is used to control pin functions, pull + up/down resistance and drive strength options. + +properties: + compatible: + enum: + - mediatek,mt6779-pinctrl + - mediatek,mt6797-pinctrl + + reg: + description: Physical addresses for GPIO base(s) and EINT registers. + + reg-names: true + + gpio-controller: true + + "#gpio-cells": + const: 2 + description: + Number of cells in GPIO specifier. Since the generic GPIO binding is used, + the amount of cells must be specified as 2. See the below mentioned gpio + binding representation for description of particular cells. + + gpio-ranges: + minItems: 1 + maxItems: 5 + description: + GPIO valid number range. + + interrupt-controller: true + + interrupts: + maxItems: 1 + description: + Specifies the summary IRQ. + + "#interrupt-cells": + const: 2 + +required: + - compatible + - reg + - reg-names + - gpio-controller + - "#gpio-cells" + +allOf: + - $ref: pinctrl.yaml# + - if: + properties: + compatible: + contains: + const: mediatek,mt6779-pinctrl + then: + properties: + reg: + minItems: 9 + maxItems: 9 + + reg-names: + items: + - const: gpio + - const: iocfg_rm + - const: iocfg_br + - const: iocfg_lm + - const: iocfg_lb + - const: iocfg_rt + - const: iocfg_lt + - const: iocfg_tl + - const: eint + - if: + properties: + compatible: + contains: + const: mediatek,mt6797-pinctrl + then: + properties: + reg: + minItems: 5 + maxItems: 5 + + reg-names: + items: + - const: gpio + - const: iocfgl + - const: iocfgb + - const: iocfgr + - const: iocfgt + - if: + properties: + reg-names: + contains: + const: eint + then: + required: + - interrupts + - interrupt-controller + - "#interrupt-cells" + +patternProperties: + '-[0-9]*$': + type: object + additionalProperties: false + + patternProperties: + '-pins*$': + type: object + description: + A pinctrl node should contain at least one subnodes 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. + $ref: /schemas/pinctrl/pincfg-node.yaml + + 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/<soc>-pinfunc.h directly. + + bias-disable: true + + bias-pull-up: true + + bias-pull-down: true + + input-enable: true + + input-disable: true + + output-low: true + + output-high: true + + input-schmitt-enable: true + + input-schmitt-disable: true + + drive-strength: + enum: [2, 4, 8, 12, 16] + + slew-rate: + enum: [0, 1] + + mediatek,pull-up-adv: + description: | + Pull up settings for 2 pull resistors, R0 and R1. User can + configure those special pins. Valid arguments are described as + below: + 0: (R1, R0) = (0, 0) which means R1 disabled and R0 disabled. + 1: (R1, R0) = (0, 1) which means R1 disabled and R0 enabled. + 2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled. + 3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + + mediatek,pull-down-adv: + description: | + Pull down settings for 2 pull resistors, R0 and R1. User can + configure those special pins. Valid arguments are described as + below: + 0: (R1, R0) = (0, 0) which means R1 disabled and R0 disabled. + 1: (R1, R0) = (0, 1) which means R1 disabled and R0 enabled. + 2: (R1, R0) = (1, 0) which means R1 enabled and R0 disabled. + 3: (R1, R0) = (1, 1) which means R1 enabled and R0 enabled. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + + required: + - pinmux + + additionalProperties: false + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/pinctrl/mt6779-pinfunc.h> + + soc { + #address-cells = <2>; + #size-cells = <2>; + + pio: pinctrl@10005000 { + compatible = "mediatek,mt6779-pinctrl"; + reg = <0 0x10005000 0 0x1000>, + <0 0x11c20000 0 0x1000>, + <0 0x11d10000 0 0x1000>, + <0 0x11e20000 0 0x1000>, + <0 0x11e70000 0 0x1000>, + <0 0x11ea0000 0 0x1000>, + <0 0x11f20000 0 0x1000>, + <0 0x11f30000 0 0x1000>, + <0 0x1000b000 0 0x1000>; + reg-names = "gpio", "iocfg_rm", + "iocfg_br", "iocfg_lm", + "iocfg_lb", "iocfg_rt", + "iocfg_lt", "iocfg_tl", + "eint"; + gpio-controller; + #gpio-cells = <2>; + gpio-ranges = <&pio 0 0 210>; + interrupt-controller; + #interrupt-cells = <2>; + interrupts = <GIC_SPI 204 IRQ_TYPE_LEVEL_HIGH>; + + mmc0_pins_default: mmc0-0 { + cmd-dat-pins { + pinmux = <PINMUX_GPIO168__FUNC_MSDC0_DAT0>, + <PINMUX_GPIO172__FUNC_MSDC0_DAT1>, + <PINMUX_GPIO169__FUNC_MSDC0_DAT2>, + <PINMUX_GPIO177__FUNC_MSDC0_DAT3>, + <PINMUX_GPIO170__FUNC_MSDC0_DAT4>, + <PINMUX_GPIO173__FUNC_MSDC0_DAT5>, + <PINMUX_GPIO171__FUNC_MSDC0_DAT6>, + <PINMUX_GPIO174__FUNC_MSDC0_DAT7>, + <PINMUX_GPIO167__FUNC_MSDC0_CMD>; + input-enable; + mediatek,pull-up-adv = <1>; + }; + clk-pins { + pinmux = <PINMUX_GPIO176__FUNC_MSDC0_CLK>; + mediatek,pull-down-adv = <2>; + }; + rst-pins { + pinmux = <PINMUX_GPIO178__FUNC_MSDC0_RSTB>; + mediatek,pull-up-adv = <0>; + }; + }; + }; + + mmc0 { + pinctrl-0 = <&mmc0_pins_default>; + pinctrl-names = "default"; + }; + }; |