Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
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>
Cc:     <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-samsung-soc@vger.kernel.org>
In-Reply-To: <20221013104024.50179-4-p.rajanbabu@samsung.com>
Subject: RE: [PATCH v3 3/4] arm64: dts: fix UART drive strength values as
 per FSD HW UM
Date:   Fri, 14 Oct 2022 07:11:11 +0530
Message-ID: <000201d8df6e$0b3c2fc0$21b48f40$@samsung.com>
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Thread-Index: AQKobzBT6PrpQ/yNZITJ48yEumYi1gJKJz4oASEeVd+sUqMlsA==
Content-Language: en-us
Content-Type: text/plain; charset="utf-8"
CMS-TYPE: 105P
DLP-Filter: Pass
References: <20221013104024.50179-1-p.rajanbabu@samsung.com>
        <CGME20221013110728epcas5p22fb8b83f6cfb4b6a035a9fbb5a38546f@epcas5p2.samsung.com>
        <20221013104024.50179-4-p.rajanbabu@samsung.com>
Precedence: bulk


>-----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 3/4=5D arm64: dts: fix UART drive strength values as =
per FSD
>HW UM
>
>Drive strength values used for UART is not reflecting the default values
>recommended by FSD HW UM.
>
>Fix the drive strength values for UART, 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 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
>diff --git a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>index 09a492b1fd6e..a2634e70925a 100644
>--- a/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>+++ b/arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi
>=40=40 -309,14 +309,14 =40=40
> 		samsung,pins =3D =22gpb7-0=22, =22gpb7-1=22;
> 		samsung,pin-function =3D <FSD_PIN_FUNC_2>;
> 		samsung,pin-pud =3D <FSD_PIN_PULL_NONE>;
>-		samsung,pin-drv =3D <FSD_PIN_DRV_LV1>;
>+		samsung,pin-drv =3D <FSD_PIN_DRV_LV4>;
> 	=7D;
>
> 	uart1_data: uart1-data-pins =7B
> 		samsung,pins =3D =22gpb7-4=22, =22gpb7-5=22;
> 		samsung,pin-function =3D <FSD_PIN_FUNC_2>;
> 		samsung,pin-pud =3D <FSD_PIN_PULL_NONE>;
>-		samsung,pin-drv =3D <FSD_PIN_DRV_LV1>;
>+		samsung,pin-drv =3D <FSD_PIN_DRV_LV4>;
> 	=7D;
>
> 	spi0_bus: spi0-bus-pins =7B
>--
>2.17.1