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

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Message-ID: <20180625151719.GA16723@rob-hp-laptop>
Date:   Mon, 25 Jun 2018 09:17:19 -0600
From:   Rob Herring <robh@...nel.org>
To:     Abel Vesa <abel.vesa@....com>
Cc:     Lucas Stach <l.stach@...gutronix.de>,
        Dong Aisheng <aisheng.dong@....com>,
        linux-gpio@...r.kernel.org, linux-imx@....com,
        Shawn Guo <shawnguo@...nel.org>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Abel Vesa <abelvesa@...ux.com>
Subject: Re: [PATCH v5 1/2] dt-bindings: add binding for i.MX8MQ IOMUXC

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@....com>
> Acked-by: Dong Aisheng <aisheng.dong@....com>
> ---
>  .../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@...30000 {

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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