linux-kernel - Re: [PATCH v3 2/8] arm64: dts: imx8mp: Add pinctrl config definitionsy

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Message-ID: <Z+V2Z296gJsl2U+V@lizhi-Precision-Tower-5810>
Date: Thu, 27 Mar 2025 12:01:43 -0400
From: Frank Li <Frank.li@....com>
To: maudspierings@...ontroll.com
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v3 2/8] arm64: dts: imx8mp: Add pinctrl config
 definitionsy

On Thu, Mar 27, 2025 at 04:52:37PM +0100, Maud Spierings via B4 Relay wrote:
> From: Maud Spierings <maudspierings@...ontroll.com>
>
> Currently to configure each IOMUXC_SW_PAD_CTL_PAD the raw value of this
> register is written in the dts, these values are not obvious. Add defines
> which describe the fields of this register which can be or-ed together to
> produce readable settings.
>
> Acked-by: Rob Herring (Arm) <robh@...nel.org>
> Signed-off-by: Maud Spierings <maudspierings@...ontroll.com>
> ---

Reviewed-by: Frank Li <Frank.Li@....com>

> This patch has already been sent in a different group of patches: [1]
> It was requested there to submit it along with a user, this series also
> includes some users for it.
>
> [1]: https://lore.kernel.org/all/20250218-pinctrl_defines-v2-2-c554cad0e1d2@gocontroll.com/
> ---
>  arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h | 27 ++++++++++++++++++++++++++
>  1 file changed, 27 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h b/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h
> index 0fef066471ba607be02d0ab15da5a048a8a213a7..34a6d3090926b8d9d7c96d1b0b01be0ed05cbd27 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-pinfunc.h
> @@ -6,6 +6,33 @@
>  #ifndef __DTS_IMX8MP_PINFUNC_H
>  #define __DTS_IMX8MP_PINFUNC_H
>
> +/* Drive Strength */
> +#define MX8MP_DSE_X1 0x0
> +#define MX8MP_DSE_X2 0x4
> +#define MX8MP_DSE_X4 0x2
> +#define MX8MP_DSE_X6 0x6
> +
> +/* Slew Rate */
> +#define MX8MP_FSEL_FAST 0x10
> +#define MX8MP_FSEL_SLOW 0x0
> +
> +/* Open Drain */
> +#define MX8MP_ODE_ENABLE 0x20
> +#define MX8MP_ODE_DISABLE 0x0
> +
> +#define MX8MP_PULL_DOWN 0x0
> +#define MX8MP_PULL_UP 0x40
> +
> +/* Hysteresis */
> +#define MX8MP_HYS_CMOS 0x0
> +#define MX8MP_HYS_SCHMITT 0x80
> +
> +#define MX8MP_PULL_ENABLE 0x100
> +#define MX8MP_PULL_DISABLE 0x0
> +
> +/* SION force input mode */
> +#define MX8MP_SION 0x40000000
> +
>  /*
>   * The pin function ID is a tuple of
>   * <mux_reg conf_reg input_reg mux_mode input_val>
>
> --
> 2.49.0
>
>