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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>,
        <chanho61.park@samsung.com>, <linus.walleij@linaro.org>,
        <pankaj.dubey@samsung.com>
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        <linux-samsung-soc@vger.kernel.org>
In-Reply-To: <20221013104024.50179-3-p.rajanbabu@samsung.com>
Subject: RE: [PATCH v3 2/4] arm64: dts: fix HSI2C drive strength values as
 per FSD HW UM
Date:   Fri, 14 Oct 2022 07:09:38 +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 2/4=5D arm64: dts: fix HSI2C drive strength values as=
 per FSD
>HW UM
>
>Drive strength values used for HSI2C is not reflecting the default values
>recommended by FSD HW UM.
>
>Fix the drive strength values for HSI2C, thereby ensuring that the existin=
g
>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 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
>diff --git a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>index 4e151d419909..09a492b1fd6e 100644
>--- a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>+++ b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>=40=40 -253,56 +253,56 =40=40
> 		samsung,pins =3D =22gpb0-0=22, =22gpb0-1=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;
>
> 	hs_i2c1_bus: hs-i2c1-bus-pins =7B
> 		samsung,pins =3D =22gpb0-2=22, =22gpb0-3=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;
>
> 	hs_i2c2_bus: hs-i2c2-bus-pins =7B
> 		samsung,pins =3D =22gpb0-4=22, =22gpb0-5=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;
>
> 	hs_i2c3_bus: hs-i2c3-bus-pins =7B
> 		samsung,pins =3D =22gpb0-6=22, =22gpb0-7=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;
>
> 	hs_i2c4_bus: hs-i2c4-bus-pins =7B
> 		samsung,pins =3D =22gpb1-0=22, =22gpb1-1=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;
>
> 	hs_i2c5_bus: hs-i2c5-bus-pins =7B
> 		samsung,pins =3D =22gpb1-2=22, =22gpb1-3=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;
>
> 	hs_i2c6_bus: hs-i2c6-bus-pins =7B
> 		samsung,pins =3D =22gpb1-4=22, =22gpb1-5=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;
>
> 	hs_i2c7_bus: hs-i2c7-bus-pins =7B
> 		samsung,pins =3D =22gpb1-6=22, =22gpb1-7=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;
>
> 	uart0_data: uart0-data-pins =7B
>--
>2.17.1