Re: [PATCH v5 1/2] dt-bindings: add binding for i.MX8MQ IOMUXC

From: Rob Herring
Date: Mon Jun 25 2018 - 11:17:30 EST


On Fri, Jun 22, 2018 at 06:15:48PM +0300, Abel Vesa wrote:
> This adds the binding for the i.MX8MQ pin controller, in the same
> fashion as earlier i.MX SoCs.
>
> Signed-off-by: Abel Vesa <abel.vesa@xxxxxxx>
> Acked-by: Dong Aisheng <aisheng.dong@xxxxxxx>
> ---
> .../bindings/pinctrl/fsl,imx8mq-pinctrl.txt | 32 ++++++++++++++++++++++
> 1 file changed, 32 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx8mq-pinctrl.txt
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx8mq-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mq-pinctrl.txt
> new file mode 100644
> index 0000000..e1c405d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx8mq-pinctrl.txt
> @@ -0,0 +1,32 @@
> +* Freescale IMX8MQ 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,imx8mq-iomuxc"

reg?

> +- 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
> + imx8mq-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.MX8M Quad
> + Reference Manual for detailed CONFIG settings.

Needs to specify this is in sub-nodes.

> +
> +Examples:
> +
> +&uart1 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_uart1>;
> +};
> +
> +iomuxc: iomuxc@30330000 {

pinctrl@...

> + compatible = "fsl,imx8mq-iomuxc";
> + reg = <0x0 0x30330000 0x0 0x10000>;
> +
> + pinctrl_uart1: uart1grp {
> + fsl,pins = <
> + MX8MQ_IOMUXC_UART1_RXD_UART1_DCE_RX 0x49
> + MX8MQ_IOMUXC_UART1_TXD_UART1_DCE_TX 0x49
> + >;
> + };
> +};
> --
> 2.7.4
>
> --
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