[PATCH V2 2/3] dt-bindings: pinctrl: Convert i.MX8MM to json-schema

Anson Huang
2020-01-10T04:09:29Z

Convert the i.MX8MM pinctrl binding to DT schema format using json-schema

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
Changes since V1:
- use "grp$" instead of "-grp$";
- use space instead of tab for "ref$";
- add missed "reg" property;
- remove the "maxItem" for "fsl,pins" to avoid build warning, as the item number is changable.
---
.../bindings/pinctrl/fsl,imx8mm-pinctrl.txt | 36 -----------
.../bindings/pinctrl/fsl,imx8mm-pinctrl.yaml | 69 ++++++++++++++++++++++
2 files changed, 69 insertions(+), 36 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.txt
create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.txt
deleted file mode 100644
index e4e01c0..0000000
--- a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.txt
+++ /dev/null
@@ -1,36 +0,0 @@
-* Freescale IMX8MM 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,imx8mm-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/imx8mm-pinfunc.h>. The last integer CONFIG is
- the pad setting value like pull-up on this pin. Please refer to i.MX8M Mini
- Reference Manual for detailed CONFIG settings.
-
-Examples:
-
-&uart1 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_uart1>;
-};
-
-iomuxc: pinctrl@30330000 {
- compatible = "fsl,imx8mm-iomuxc";
- reg = <0x0 0x30330000 0x0 0x10000>;
-
- pinctrl_uart1: uart1grp {
- fsl,pins = <
- MX8MM_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140
- MX8MM_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140
- >;
- };
-};
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.yaml
new file mode 100644
index 0000000..a3c4275
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mm-pinctrl.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/fsl,imx8mm-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale IMX8MM IOMUX Controller
+
+maintainers:
+ - Anson Huang <Anson.Huang@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:
+ const: fsl,imx8mm-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:
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ 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/imx8mm-pinfunc.h>. The last
+ integer CONFIG is the pad setting value like pull-up on this pin. Please
+ refer to i.MX8M Mini Reference Manual for detailed CONFIG settings.
+
+ required:
+ - fsl,pins
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ # Pinmux controller node
+ - |
+ iomuxc: pinctrl@30330000 {
+ compatible = "fsl,imx8mm-iomuxc";
+ reg = <0x30330000 0x10000>;
+
+ pinctrl_uart2: uart2grp {
+ fsl,pins = <
+ 0x23C 0x4A4 0x4FC 0x0 0x0 0x140
+ 0x240 0x4A8 0x000 0x0 0x0 0x140
+ >;
+ };
+ };
+
+...
--
2.7.4