diff mbox series

[v3,3/4] arm64: dts: fix UART drive strength values as per FSD HW UM

Message ID 20221013104024.50179-4-p.rajanbabu@samsung.com
State New
Headers
Series arm64: dts: fix drive strength macros and values for FSD Platform |

Commit Message

Padmanabhan Rajanbabu Oct. 13, 2022, 10:40 a.m. UTC 
  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@samsung.com>
---
 arch/arm64/boot/dts/tesla/fsd-pinctrl.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Alim Akhtar Oct. 14, 2022, 1:41 a.m. UTC | #1 
>-----Original Message-----
>From: Padmanabhan Rajanbabu [mailto:p.rajanbabu@samsung.com]
>Sent: Thursday, October 13, 2022 4:10 PM
>To: robh+dt@kernel.org; krzysztof.kozlowski+dt@linaro.org;
>alim.akhtar@samsung.com; 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; Padmanabhan Rajanbabu
><p.rajanbabu@samsung.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@samsung.com>
>---

Reviewed-by: Alim Akhtar <alim.akhtar@samsung.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
diff mbox series

Patch

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 {