linux-kernel - [PATCH v8 5/5] riscv: dts: spacemit: add gpio LED for system heartbeat

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Message-Id: <20250412-03-k1-gpio-v8-5-1c6862d272ec@gentoo.org>
Date: Sat, 12 Apr 2025 07:31:32 +0800
From: Yixun Lan <dlan@...too.org>
To: Bartosz Golaszewski <brgl@...ev.pl>, 
 Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Conor Dooley <conor@...nel.org>, 
 Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>
Cc: Alex Elder <elder@...cstar.com>, Yangyu Chen <cyy@...self.name>, 
 Jisheng Zhang <jszhang@...nel.org>, Jesse Taube <mr.bossman075@...il.com>, 
 Inochi Amaoto <inochiama@...look.com>, Icenowy Zheng <uwu@...nowy.me>, 
 Meng Zhang <zhangmeng.kevin@...ux.spacemit.com>, linux-gpio@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev, 
 Yixun Lan <dlan@...too.org>
Subject: [PATCH v8 5/5] riscv: dts: spacemit: add gpio LED for system
 heartbeat

Leverage GPIO to support system LED to indicate activity of CPUs.

Signed-off-by: Yixun Lan <dlan@...too.org>
---
 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
index 1d617b40a2d51ee464b57234d248798aeb218643..816ef1bc358ec490aff184d5915d680dbd9f00cb 100644
--- a/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts
@@ -17,6 +17,17 @@ aliases {
 	chosen {
 		stdout-path = "serial0";
 	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led1 {
+			label = "sys-led";
+			gpios = <&gpio K1_GPIO(96) GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+			default-state = "on";
+		};
+	};
 };
 
 &uart0 {

-- 
2.49.0