From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: Re: [PATCH 1/2] ARM: dts: exynos: Fix mismatched value for SD4 pull up/down configuration on exynos4210 Date: Thu, 01 Sep 2016 13:17:35 +0200 Message-ID: <2498577.5hS2QaaMmd@amdc1976> References: <1472719022-27226-1-git-send-email-k.kozlowski@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7Bit Return-path: In-reply-to: <1472719022-27226-1-git-send-email-k.kozlowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Krzysztof Kozlowski Cc: javier-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org, Arnd Bergmann , Kukjin Kim , Krzysztof Kozlowski , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org Hi, On Thursday, September 01, 2016 10:37:01 AM Krzysztof Kozlowski wrote: > The pinctrl pull up/down register on exynos4210 is 2-bit wide for each > pin and it accepts only values of 0, 1 and 3. The pins sd4-bus-width8 > were configured with value of 4. The driver does not validate the value > so this overflow effectively set a bit 1 in adjacent pins thus > configuring them to pull down. > > The author's intention was probably to set drive strength of 4x. All > other bus-widths pins are configured with pull up and drive strength of > 4x. Fix this one with same pattern. > > Fixes: 87711d8c7c70 ("ARM: dts: Add pinctrl node entries for SAMSUNG EXYNOS4210 SoC") > Signed-off-by: Krzysztof Kozlowski sd4_bus8 is currently unused by other drivers so there should be no problem with this change. Reviewed-by: Bartlomiej Zolnierkiewicz > --- > arch/arm/boot/dts/exynos4210-pinctrl.dtsi | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/exynos4210-pinctrl.dtsi b/arch/arm/boot/dts/exynos4210-pinctrl.dtsi > index 8046340e50ac..d9b6d25e4abe 100644 > --- a/arch/arm/boot/dts/exynos4210-pinctrl.dtsi > +++ b/arch/arm/boot/dts/exynos4210-pinctrl.dtsi > @@ -649,7 +649,7 @@ > sd4_bus8: sd4-bus-width8 { > samsung,pins = "gpk1-3", "gpk1-4", "gpk1-5", "gpk1-6"; > samsung,pin-function = ; > - samsung,pin-pud = <4>; > + samsung,pin-pud = ; > samsung,pin-drv = ; > }; Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html