Convert the i.MX8MN pinctrl binding to DT schema format using json-schema
Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
---
Changes since V3:
- use uint32-matrix instead of uint32-array for fsl,pins.
---
.../bindings/pinctrl/fsl,imx8mn-pinctrl.txt | 39 ----------
.../bindings/pinctrl/fsl,imx8mn-pinctrl.yaml | 82 ++++++++++++++++++++++
2 files changed, 82 insertions(+), 39 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.txt
create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.txt
deleted file mode 100644
index 330716c..0000000
--- a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.txt
+++ /dev/null
@@ -1,39 +0,0 @@
-* Freescale IMX8MN IOMUX Controller
-
-Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
-for common binding part and usage.
-
-Required properties:
-- compatible: "fsl,imx8mn-iomuxc"
-- reg: should contain the base physical address and size of the iomuxc
- registers.
-
-Required properties in sub-nodes:
-- 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
- <arch/arm64/boot/dts/freescale/imx8mn-pinfunc.h>. The last integer CONFIG is
- the pad setting value like pull-up on this pin. Please refer to i.MX8M Nano
- Reference Manual for detailed CONFIG settings.
-
-Examples:
-
-&uart1 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_uart1>;
-};
-
-iomuxc: pinctrl@30330000 {
- compatible = "fsl,imx8mn-iomuxc";
- reg = <0x0 0x30330000 0x0 0x10000>;
-
- pinctrl_uart1: uart1grp {
- fsl,pins = <
- MX8MN_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140
- MX8MN_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140
- MX8MN_IOMUXC_UART3_RXD_UART1_DCE_CTS_B 0x140
- MX8MN_IOMUXC_UART3_TXD_UART1_DCE_RTS_B 0x140
- MX8MN_IOMUXC_SD1_DATA4_GPIO2_IO6 0x19
- >;
- };
-};
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.yaml
new file mode 100644
index 0000000..b9aa180
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mn-pinctrl.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/fsl,imx8mn-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale IMX8MN IOMUX Controller
+
+maintainers:
+ - Anson Huang <Anson.Huang@xxxxxxx>
+
+description:
+ Please refer to fsl,imx-pinctrl.txt and pinctrl-bindings.txt in this directory
+ for common binding part and usage.
+
+properties:
+ compatible:
+ const: fsl,imx8mn-iomuxc
+
+ reg:
+ maxItems: 1
+
+# 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/arm64/boot/dts/freescale/imx8mn-pinfunc.h>. The last
+ integer CONFIG is the pad setting value like pull-up on this pin. Please
+ refer to i.MX8M Nano Reference Manual for detailed CONFIG settings.
+ allOf:
+ - $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
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ # Pinmux controller node
+ - |
+ iomuxc: pinctrl@30330000 {
+ compatible = "fsl,imx8mn-iomuxc";
+ reg = <0x30330000 0x10000>;
+
+ pinctrl_uart2: uart2grp {
+ fsl,pins =
+ <0x23C 0x4A4 0x4FC 0x0 0x0 0x140>,
+ <0x240 0x4A8 0x000 0x0 0x0 0x140>;
+ };
+ };
+
+...
--
2.7.4
