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-* Freescale i.MX7 Dual IOMUX Controller
-
-iMX7D supports two iomuxc controllers, fsl,imx7d-iomuxc controller is similar
-as previous iMX SoC generation and fsl,imx7d-iomuxc-lpsr which provides low
-power state retention capabilities on gpios that are part of iomuxc-lpsr
-(GPIO1_IO7..GPIO1_IO0). While iomuxc-lpsr provides its own set of registers for
-mux and pad control settings, it shares the input select register from main
-iomuxc controller for daisy chain settings, the fsl,input-sel property extends
-fsl,imx-pinctrl driver to support iomuxc-lpsr controller.
-
-iomuxc_lpsr: iomuxc-lpsr@302c0000 {
- compatible = "fsl,imx7d-iomuxc-lpsr";
- reg = <0x302c0000 0x10000>;
- fsl,input-sel = <&iomuxc>;
-};
-
-iomuxc: iomuxc@30330000 {
- compatible = "fsl,imx7d-iomuxc";
- reg = <0x30330000 0x10000>;
-};
-
-Peripherals using pads from iomuxc-lpsr support low state retention power
-state, under LPSR mode GPIO's state of pads are retain.
-
-Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
-and usage.
-
-Required properties:
-- compatible: "fsl,imx7d-iomuxc" for main IOMUXC controller, or
- "fsl,imx7d-iomuxc-lpsr" for Low Power State Retention IOMUXC controller.
-- fsl,pins: each entry consists of 6 integers and represents the mux and config
- setting for one pin. The first 5 integers <mux_reg conf_reg input_reg mux_val
- input_val> are specified using a PIN_FUNC_ID macro, which can be found in
- imx7d-pinfunc.h under device tree source folder. The last integer CONFIG is
- the pad setting value like pull-up on this pin. Please refer to i.MX7 Dual
- Reference Manual for detailed CONFIG settings.
-- fsl,input-sel: required property for iomuxc-lpsr controller, this property is
- a phandle for main iomuxc controller which shares the input select register for
- daisy chain settings.
-
-CONFIG bits definition:
-PAD_CTL_PUS_100K_DOWN (0 << 5)
-PAD_CTL_PUS_5K_UP (1 << 5)
-PAD_CTL_PUS_47K_UP (2 << 5)
-PAD_CTL_PUS_100K_UP (3 << 5)
-PAD_CTL_PUE (1 << 4)
-PAD_CTL_HYS (1 << 3)
-PAD_CTL_SRE_SLOW (1 << 2)
-PAD_CTL_SRE_FAST (0 << 2)
-PAD_CTL_DSE_X1 (0 << 0)
-PAD_CTL_DSE_X4 (1 << 0)
-PAD_CTL_DSE_X2 (2 << 0)
-PAD_CTL_DSE_X6 (3 << 0)
-
-Examples:
-While iomuxc-lpsr is intended to be used by dedicated peripherals to take
-advantages of LPSR power mode, is also possible that an IP to use pads from
-any of the iomux controllers. For example the I2C1 IP can use SCL pad from
-iomuxc-lpsr controller and SDA pad from iomuxc controller as:
-
-i2c1: i2c@30a20000 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_i2c1_1>, <&pinctrl_i2c1_2>;
-};
-
-iomuxc-lpsr@302c0000 {
- compatible = "fsl,imx7d-iomuxc-lpsr";
- reg = <0x302c0000 0x10000>;
- fsl,input-sel = <&iomuxc>;
-
- pinctrl_i2c1_1: i2c1grp-1 {
- fsl,pins = <
- MX7D_PAD_GPIO1_IO04__I2C1_SCL 0x4000007f
- >;
- };
-};
-
-iomuxc@30330000 {
- compatible = "fsl,imx7d-iomuxc";
- reg = <0x30330000 0x10000>;
-
- pinctrl_i2c1_2: i2c1grp-2 {
- fsl,pins = <
- MX7D_PAD_I2C1_SDA__I2C1_SDA 0x4000007f
- >;
- };
-};
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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/fsl,imx7d-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale IMX7D IOMUX Controller
+
+maintainers:
+ - Dong Aisheng <aisheng.dong@nxp.com>
+
+description:
+ Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
+ for common binding part and usage.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - fsl,imx7d-iomuxc
+ - fsl,imx7d-iomuxc-lpsr
+
+ reg:
+ maxItems: 1
+
+ fsl,input-sel:
+ description:
+ phandle for main iomuxc controller which shares the input select
+ register for daisy chain settings.
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+# Client device subnode's properties
+patternProperties:
+ 'grp$':
+ type: object
+ description:
+ Pinctrl node's client devices use subnodes for desired pin configuration.
+ Client device subnodes use below standard properties.
+
+ properties:
+ fsl,pins:
+ description:
+ each entry consists of 6 integers and represents the mux and config
+ setting for one pin. The first 5 integers <mux_reg conf_reg input_reg
+ mux_val input_val> are specified using a PIN_FUNC_ID macro, which can
+ be found in <arch/arm/boot/dts/imx7d-pinfunc.h>. The last integer
+ CONFIG is the pad setting value like pull-up on this pin. Please
+ refer to i.MX7D Reference Manual for detailed CONFIG settings.
+ $ref: /schemas/types.yaml#/definitions/uint32-matrix
+ items:
+ items:
+ - description: |
+ "mux_reg" indicates the offset of mux register.
+ - description: |
+ "conf_reg" indicates the offset of pad configuration register.
+ - description: |
+ "input_reg" indicates the offset of select input register.
+ - description: |
+ "mux_val" indicates the mux value to be applied.
+ - description: |
+ "input_val" indicates the select input value to be applied.
+ - description: |
+ "pad_setting" indicates the pad configuration value to be applied.
+
+ required:
+ - fsl,pins
+
+ additionalProperties: false
+
+allOf:
+ - $ref: "pinctrl.yaml#"
+
+required:
+ - compatible
+ - reg
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx7d-iomuxc-lpsr
+
+then:
+ required:
+ - fsl,input-sel
+
+additionalProperties: false
+
+examples:
+ - |
+ iomuxc: pinctrl@30330000 {
+ compatible = "fsl,imx7d-iomuxc";
+ reg = <0x30330000 0x10000>;
+
+ pinctrl_uart5: uart5grp {
+ fsl,pins =
+ <0x0160 0x03D0 0x0714 0x1 0x0 0x7e>,
+ <0x0164 0x03D4 0x0000 0x1 0x0 0x76>;
+ };
+ };
+ - |
+ iomuxc_lpsr: pinctrl@302c0000 {
+ compatible = "fsl,imx7d-iomuxc-lpsr";
+ reg = <0x302c0000 0x10000>;
+ fsl,input-sel = <&iomuxc>;
+
+ pinctrl_gpio_lpsr: gpio1-grp {
+ fsl,pins =
+ <0x0008 0x0038 0x0000 0x0 0x0 0x59>,
+ <0x000C 0x003C 0x0000 0x0 0x0 0x59>;
+ };
+ };
Convert the i.MX7D pinctrl binding to DT schema format using json-schema Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> --- .../bindings/pinctrl/fsl,imx7d-pinctrl.txt | 87 -------------- .../bindings/pinctrl/fsl,imx7d-pinctrl.yaml | 113 ++++++++++++++++++ 2 files changed, 113 insertions(+), 87 deletions(-) delete mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.txt create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.yaml