[PATCH v2 01/15] arm64: dts: mediatek: mt7981b: Configure UART0 pinmux
From: Sjoerd Simons <hidden>
Date: 2025-11-01 13:33:00
Also in:
linux-arm-kernel, linux-devicetree, linux-mediatek, linux-pci, linux-phy, lkml
Subsystem:
arm/mediatek soc support, the rest · Maintainers:
Matthias Brugger, AngeloGioacchino Del Regno, Linus Torvalds
Add explicit pinctrl configuration for UART0
Signed-off-by: Sjoerd Simons <redacted>
---
V1 -> V2: Move pinctrl to the soc dtsi as it's the only available
pinmux for the uart. And very rare for the pins to be used for
anything else.
---
arch/arm64/boot/dts/mediatek/mt7981b.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 58c99f2a25218..4fa35bbf0a9cd 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi@@ -102,6 +102,8 @@ uart0: serial@11002000 { clocks = <&infracfg CLK_INFRA_UART0_SEL>, <&infracfg CLK_INFRA_UART0_CK>; clock-names = "baud", "bus"; + pinctrl-names = "default"; + pinctrl-0 = <&uart0_pins>; status = "disabled"; };
@@ -229,6 +231,13 @@ pio: pinctrl@11d00000 { gpio-controller; #gpio-cells = <2>; #interrupt-cells = <2>; + + uart0_pins: uart0-pins { + mux { + function = "uart"; + groups = "uart0"; + }; + }; }; efuse@11f20000 {
--
2.51.0