linux-kernel - [PATCH v3 3/4] arm64: dts: fix UART drive strength values as per FSD HW UM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 13 Oct 2022 16:10:23 +0530
From:   Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        alim.akhtar@...sung.com, chanho61.park@...sung.com,
        linus.walleij@...aro.org, pankaj.dubey@...sung.com
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org,
        Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>
Subject: [PATCH v3 3/4] 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 ("arm64: dts: fsd: Add initial pinctrl support")
Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@...sung.com>
---
 arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi | 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
@@ -309,14 +309,14 @@
 		samsung,pins = "gpb7-0", "gpb7-1";
 		samsung,pin-function = <FSD_PIN_FUNC_2>;
 		samsung,pin-pud = <FSD_PIN_PULL_NONE>;
-		samsung,pin-drv = <FSD_PIN_DRV_LV1>;
+		samsung,pin-drv = <FSD_PIN_DRV_LV4>;
 	};
 
 	uart1_data: uart1-data-pins {
 		samsung,pins = "gpb7-4", "gpb7-5";
 		samsung,pin-function = <FSD_PIN_FUNC_2>;
 		samsung,pin-pud = <FSD_PIN_PULL_NONE>;
-		samsung,pin-drv = <FSD_PIN_DRV_LV1>;
+		samsung,pin-drv = <FSD_PIN_DRV_LV4>;
 	};
 
 	spi0_bus: spi0-bus-pins {
-- 
2.17.1