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Date:   Sun, 24 Oct 2021 20:06:54 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Jesse Taube <mr.bossman075@...il.com>
Cc:     NXP Linux Team <linux-imx@....com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Dong Aisheng <aisheng.dong@....com>,
        Stefan Agner <stefan@...er.ch>,
        Linus Walleij <linus.walleij@...aro.org>,
        gregkh <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        SoC Team <soc@...nel.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Abel Vesa <abel.vesa@....com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Slaby <jirislaby@...nel.org>,
        giulio.benetti@...ettiengineering.com,
        Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@...hiba.co.jp>,
        Leonard Crestez <leonard.crestez@....com>,
        b20788@...escale.com, Andy Duan <fugang.duan@....com>,
        linux-clk <linux-clk@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-mmc <linux-mmc@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>
Subject: Re: [PATCH 03/13] dt-bindings: imx: Add pinctrl binding doc for i.MXRT1050

On Sun, Oct 24, 2021 at 5:40 PM Jesse Taube <mr.bossman075@...il.com> wrote:
> +/*
> + * The pin function ID is a tuple of
> + * <mux_reg conf_reg input_reg mux_mode input_val>
> + */
> +
> +#define MXRT1050_IOMUXC_GPIO_EMC_00_SEMC_DA00                          0x014 0x204 0x000 0x0 0x0
> +#define MXRT1050_IOMUXC_GPIO_EMC_00_FLEXPWM4_PWM0_A                    0x014 0x204 0x494 0x1 0x0
> +#define MXRT1050_IOMUXC_GPIO_EMC_00_LPSPI2_SCK                         0x014 0x204 0x500 0x2 0x1
> +#define MXRT1050_IOMUXC_GPIO_EMC_00_XBAR_INOUT2                                0x014 0x204 0x60C 0x3 0x0
> +#define MXRT1050_IOMUXC_GPIO_EMC_00_FLEXIO1_D00                                0x014 0x204 0x000 0x4 0x0
> +#define MXRT1050_IOMUXC_GPIO_EMC_00_GPIO4_IO00                         0x014 0x204 0x000 0x5 0x0

The constants don't appear to be needed in this header at all, as the binding
looks completely generic with a tuple of five values, so  you could simply
open-code the numbers where they are used, no need to include these
in a driver.

        Arnd

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