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From:   "Alim Akhtar" <alim.akhtar@samsung.com>
To:     "'Padmanabhan Rajanbabu'" <p.rajanbabu@samsung.com>,
        <robh+dt@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>,
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        <linux-samsung-soc@vger.kernel.org>
In-Reply-To: <20221013104024.50179-5-p.rajanbabu@samsung.com>
Subject: RE: [PATCH v3 4/4] arm64: dts: fix SPI drive strength values as per
 FSD HW UM
Date:   Fri, 14 Oct 2022 07:11:40 +0530
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>-----Original Message-----
>From: Padmanabhan Rajanbabu =5Bmailto:p.rajanbabu=40samsung.com=5D
>Sent: Thursday, October 13, 2022 4:10 PM
>To: robh+dt=40kernel.org; krzysztof.kozlowski+dt=40linaro.org;
>alim.akhtar=40samsung.com; chanho61.park=40samsung.com;
>linus.walleij=40linaro.org; pankaj.dubey=40samsung.com
>Cc: devicetree=40vger.kernel.org; linux-kernel=40vger.kernel.org; linux-
>samsung-soc=40vger.kernel.org; Padmanabhan Rajanbabu
><p.rajanbabu=40samsung.com>
>Subject: =5BPATCH v3 4/4=5D arm64: dts: fix SPI drive strength values as p=
er FSD
>HW UM
>
>Drive strength values used for SPI is not reflecting the default values
>recommended by FSD HW UM.
>
>Fix the drive strength values for SPI, thereby ensuring that the existing =
device
>tree file is using default drive strength values recommended by UM for FSD
>SoC.
>
>Fixes: 684dac402f21 (=22arm64: dts: fsd: Add initial pinctrl support=22)
>Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu=40samsung.com>
>---

Reviewed-by: Alim Akhtar <alim.akhtar=40samsung.com>

> arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi =7C 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
>diff --git a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>index a2634e70925a..e3852c946352 100644
>--- a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>+++ b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>=40=40 -323,21 +323,21 =40=40
> 		samsung,pins =3D =22gpb4-0=22, =22gpb4-2=22, =22gpb4-3=22;
> 		samsung,pin-function =3D <FSD_PIN_FUNC_2>;
> 		samsung,pin-pud =3D <FSD_PIN_PULL_UP>;
>-		samsung,pin-drv =3D <FSD_PIN_DRV_LV1>;
>+		samsung,pin-drv =3D <FSD_PIN_DRV_LV4>;
> 	=7D;
>
> 	spi1_bus: spi1-bus-pins =7B
> 		samsung,pins =3D =22gpb4-4=22, =22gpb4-6=22, =22gpb4-7=22;
> 		samsung,pin-function =3D <FSD_PIN_FUNC_2>;
> 		samsung,pin-pud =3D <FSD_PIN_PULL_UP>;
>-		samsung,pin-drv =3D <FSD_PIN_DRV_LV1>;
>+		samsung,pin-drv =3D <FSD_PIN_DRV_LV4>;
> 	=7D;
>
> 	spi2_bus: spi2-bus-pins =7B
> 		samsung,pins =3D =22gpb5-0=22, =22gpb5-2=22, =22gpb5-3=22;
> 		samsung,pin-function =3D <FSD_PIN_FUNC_2>;
> 		samsung,pin-pud =3D <FSD_PIN_PULL_UP>;
>-		samsung,pin-drv =3D <FSD_PIN_DRV_LV1>;
>+		samsung,pin-drv =3D <FSD_PIN_DRV_LV4>;
> 	=7D;
> =7D;
>
>--
>2.17.1