[PATCH v3 1/6] dt-bindings: pinctrl: add bindings for MediaTek MT6779 SoC
From: Hanks Chen
Date: Tue Mar 17 2020 - 10:07:00 EST
From: Andy Teng <andy.teng@xxxxxxxxxxxx>
Add devicetree bindings for MediaTek MT6779 pinctrl driver.
Change-Id: I92586369564948f2628f70421bcd70668f132c4f
Signed-off-by: Andy Teng <andy.teng@xxxxxxxxxxxx>
---
.../bindings/pinctrl/mediatek,mt6779-pinctrl.yaml | 208 ++++++++++++++++++++
1 file changed, 208 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
new file mode 100644
index 0000000..ab6ab01
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
@@ -0,0 +1,208 @@
+# SPDX-License-Identifier: GPL-2.0
+%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 Device Tree Bindings
+
+maintainers:
+ - Andy Teng <andy.teng@xxxxxxxxxxxx>
+
+description: |
+ The pin controller node should be the child of a syscon node with the
+ required property:
+ - compatible: "syscon"
+
+properties:
+ compatible:
+ const: mediatek,mt6779-pinctrl
+
+ reg:
+ minItems: 9
+ maxItems: 9
+ description:
+ physical address base for gpio-related control registers.
+
+ reg-names:
+ - $ref: /schemas/types.yaml#/definitions/string-array
+ description:
+ GPIO base register names.
+
+ gpio-controller: true
+
+ "#gpio-cells":
+ const: 2
+ description:
+ Number of cells in GPIO specifier. Since the generic GPIO
+ binding is used, the amount of cells must be specified as 2. See the below
+ mentioned gpio binding representation for description of particular cells.
+
+ gpio-ranges:
+ minItems: 4
+ maxItems: 4
+ description:
+ GPIO valid number range.
+
+ interrupt-controller: true
+
+ interrupts:
+ minItems: 3
+ maxItems: 3
+ description:
+ The interrupt outputs to sysirq.
+
+ "#interrupt-cells":
+ const: 2
+
+ interrupt-parent:
+ minItems: 1
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - gpio-controller
+ - "#gpio-cells"
+ - gpio-ranges
+ - interrupt-controller
+ - interrupts
+ - "#interrupt-cells"
+ - interrupt-parent
+
+patternProperties:
+ '^.*$':
+ 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.
+
+ 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 boot/dts/<soc>-pinfunc.h directly.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+
+ bias-disable:
+ type: boolean
+
+ bias-pull-up:
+ oneOf:
+ - type: boolean
+ - $ref: /schemas/types.yaml#/definitions/uint32
+
+ bias-pull-down:
+ oneOf:
+ - type: boolean
+ - $ref: /schemas/types.yaml#/definitions/uint32
+
+ input-enable:
+ type: boolean
+
+ input-disable:
+ type: boolean
+
+ output-low:
+ type: boolean
+
+ output-high:
+ type: boolean
+
+ input-schmitt-enable:
+ type: boolean
+
+ input-schmitt-disable:
+ type: boolean
+
+ mediatek,pull-up-adv:
+ description: |
+ Pull up setings 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 disable.
+ 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.
+ allOf:
+ - $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 disable.
+ 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.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [0, 1, 2, 3]
+
+ drive-strength:
+ description: |
+ Selects the drive strength for the specified pins in mA.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ - enum: [2, 4, 6, 8, 10, 12, 14, 16]
+
+ required:
+ - pinmux
+
+examples:
+ - |
+ #include "mt6779-pinfunc.h"
+
+ 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: mmc0default {
+ pins_cmd_dat {
+ 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>;
+ };
+ pins_clk {
+ pinmux = <PINMUX_GPIO176__FUNC_MSDC0_CLK>;
+ mediatek,pull-down-adv = <2>;
+ };
+ pins_rst {
+ pinmux = <PINMUX_GPIO178__FUNC_MSDC0_RSTB>;
+ mediatek,pull-up-adv = <0>;
+ };
+ };
+ };
+
--
1.7.9.5