linux-kernel - Re: [PATCH v2 3/3] ARM: imx6q: switch to use pinctrl driver

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Message-ID: <20120424124634.GH9142@game.jcrosoft.org>
Date:	Tue, 24 Apr 2012 14:46:34 +0200
From:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
To:	Dong Aisheng <b29396@...escale.com>
Cc:	linux-kernel@...r.kernel.org, linus.walleij@...ricsson.com,
	devicetree-discuss@...ts.ozlabs.org, rob.herring@...xeda.com,
	linux-arm-kernel@...ts.infradead.org, kernel@...gutronix.de,
	s.hauer@...gutronix.de
Subject: Re: [PATCH v2 3/3] ARM: imx6q: switch to use pinctrl driver

On 22:58 Fri 20 Apr     , Dong Aisheng wrote:
> From: Dong Aisheng <dong.aisheng@...aro.org>
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@...aro.org>
> 
> ---
> This is not a formal patch and is only used for test
> since before the pinctrl core handle dummy state is in,
> enable pinctrl in driver will break other platforms.
> 
> ChangeLog v1->v2:
> * using updated binding
> ---
>  arch/arm/boot/dts/imx6q-arm2.dts   |    2 ++
>  arch/arm/boot/dts/imx6q.dtsi       |   17 +++++++++++++++++
>  arch/arm/mach-imx/Kconfig          |    2 ++
>  drivers/mmc/host/sdhci-esdhc-imx.c |   12 ++++++++++++
>  4 files changed, 33 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx6q-arm2.dts b/arch/arm/boot/dts/imx6q-arm2.dts
> index ce1c823..68b1d8d 100644
> --- a/arch/arm/boot/dts/imx6q-arm2.dts
> +++ b/arch/arm/boot/dts/imx6q-arm2.dts
> @@ -44,6 +44,8 @@
>  				fsl,card-wired;
>  				vmmc-supply = <&reg_3p3v>;
>  				status = "okay";
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&pinctrl_usdhc4_1>;
>  			};
>  
>  			uart4: uart@...f0000 {
> diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
> index 4905f51..8cbd88b 100644
> --- a/arch/arm/boot/dts/imx6q.dtsi
> +++ b/arch/arm/boot/dts/imx6q.dtsi
> @@ -386,7 +386,24 @@
>  			};
>  
>  			iomuxc@...e0000 {
> +				compatible = "fsl,imx6q-iomuxc";
>  				reg = <0x020e0000 0x4000>;
> +
> +				/* shared pinctrl settings */
> +				usdhc4 {
> +					pinctrl_usdhc4_1: usdhc4grp-1 {
> +						fsl,pins = <1386 0x17059	/* MX6Q_PAD_SD4_CMD__USDHC4_CMD */
> +							    1392 0x17059	/* MX6Q_PAD_SD4_CLK__USDHC4_CLK	*/
> +							    1462 0x17059	/* MX6Q_PAD_SD4_DAT0__USDHC4_DAT0 */
> +							    1470 0x17059	/* MX6Q_PAD_SD4_DAT1__USDHC4_DAT1 */
> +							    1478 0x17059	/* MX6Q_PAD_SD4_DAT2__USDHC4_DAT2 */
> +							    1486 0x17059	/* MX6Q_PAD_SD4_DAT3__USDHC4_DAT3 */
> +							    1493 0x17059	/* MX6Q_PAD_SD4_DAT4__USDHC4_DAT4 */
> +							    1501 0x17059	/* MX6Q_PAD_SD4_DAT5__USDHC4_DAT5 */
> +							    1509 0x17059	/* MX6Q_PAD_SD4_DAT6__USDHC4_DAT6 */
> +							    1517 0x17059>;	/* MX6Q_PAD_SD4_DAT7__USDHC4_DAT7 */
Can you on IMX have alternative onfiguration where you use as example just one
pin on a different pad?

Best Regards,
J.
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