All of lore.kernel.org
 help / color / mirror / Atom feed
From: Nick Xie <nick@khadas.com>
To: neil.armstrong@linaro.org, khilman@baylibre.com,
	martin.blumenstingl@googlemail.com, jbrunet@baylibre.com,
	krzk+dt@kernel.org
Cc: robh@kernel.org, conor+dt@kernel.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Nick Xie <nick@khadas.com>
Subject: [PATCH v2 3/4] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: add PWM LED support
Date: Sat, 28 Feb 2026 14:37:49 +0800	[thread overview]
Message-ID: <20260228063750.701887-4-nick@khadas.com> (raw)
In-Reply-To: <20260228063750.701887-1-nick@khadas.com>

The Khadas VIM1S board features a white LED connected to the PWM_G
controller (PWM channel 0).

Enable the PWM_G controller and add the pwm-leds node to support
using this LED as a heartbeat indicator.

Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 .../amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index d36533f5559a8..0bd738c1e7862 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "meson-s4.dtsi"
+#include <dt-bindings/leds/common.h>
 
 / {
 	model = "Khadas VIM1S";
@@ -43,6 +44,18 @@ emmc_pwrseq: emmc-pwrseq {
 		reset-gpios = <&gpio GPIOB_9 GPIO_ACTIVE_LOW>;
 	};
 
+	pwm-leds {
+		compatible = "pwm-leds";
+
+		led-1 {
+			color = <LED_COLOR_ID_WHITE>;
+			function = LED_FUNCTION_STATUS;
+			linux,default-trigger = "heartbeat";
+			max-brightness = <255>;
+			pwms = <&pwm_gh 0 30040 0>;
+		};
+	};
+
 	sdio_32k: sdio-32k {
 		compatible = "pwm-clock";
 		#clock-cells = <0>;
@@ -196,6 +209,12 @@ &pwm_ef {
 	pinctrl-names = "default";
 };
 
+&pwm_gh {
+	status = "okay";
+	pinctrl-0 = <&pwm_g_pins1>;
+	pinctrl-names = "default";
+};
+
 &pwm_ij {
 	status = "okay";
 };
-- 
2.34.1


_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic

WARNING: multiple messages have this Message-ID (diff)
From: Nick Xie <nick@khadas.com>
To: neil.armstrong@linaro.org, khilman@baylibre.com,
	martin.blumenstingl@googlemail.com, jbrunet@baylibre.com,
	krzk+dt@kernel.org
Cc: robh@kernel.org, conor+dt@kernel.org,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, Nick Xie <nick@khadas.com>
Subject: [PATCH v2 3/4] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: add PWM LED support
Date: Sat, 28 Feb 2026 14:37:49 +0800	[thread overview]
Message-ID: <20260228063750.701887-4-nick@khadas.com> (raw)
In-Reply-To: <20260228063750.701887-1-nick@khadas.com>

The Khadas VIM1S board features a white LED connected to the PWM_G
controller (PWM channel 0).

Enable the PWM_G controller and add the pwm-leds node to support
using this LED as a heartbeat indicator.

Signed-off-by: Nick Xie <nick@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 .../amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index d36533f5559a8..0bd738c1e7862 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "meson-s4.dtsi"
+#include <dt-bindings/leds/common.h>
 
 / {
 	model = "Khadas VIM1S";
@@ -43,6 +44,18 @@ emmc_pwrseq: emmc-pwrseq {
 		reset-gpios = <&gpio GPIOB_9 GPIO_ACTIVE_LOW>;
 	};
 
+	pwm-leds {
+		compatible = "pwm-leds";
+
+		led-1 {
+			color = <LED_COLOR_ID_WHITE>;
+			function = LED_FUNCTION_STATUS;
+			linux,default-trigger = "heartbeat";
+			max-brightness = <255>;
+			pwms = <&pwm_gh 0 30040 0>;
+		};
+	};
+
 	sdio_32k: sdio-32k {
 		compatible = "pwm-clock";
 		#clock-cells = <0>;
@@ -196,6 +209,12 @@ &pwm_ef {
 	pinctrl-names = "default";
 };
 
+&pwm_gh {
+	status = "okay";
+	pinctrl-0 = <&pwm_g_pins1>;
+	pinctrl-names = "default";
+};
+
 &pwm_ij {
 	status = "okay";
 };
-- 
2.34.1



  parent reply	other threads:[~2026-02-28  6:38 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-28  6:37 [PATCH v2 0/4] arm64: dts: amlogic: meson-s4-khadas-vim1s: enable LEDs, Keys and Bluetooth Nick Xie
2026-02-28  6:37 ` Nick Xie
2026-02-28  6:37 ` [PATCH v2 1/4] arm64: dts: amlogic: meson-s4: add UART_A node Nick Xie
2026-02-28  6:37   ` Nick Xie
2026-03-02 11:49   ` Martin Blumenstingl
2026-03-02 11:49     ` Martin Blumenstingl
2026-02-28  6:37 ` [PATCH v2 2/4] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable bluetooth Nick Xie
2026-02-28  6:37   ` Nick Xie
2026-02-28  6:37 ` Nick Xie [this message]
2026-02-28  6:37   ` [PATCH v2 3/4] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: add PWM LED support Nick Xie
2026-02-28  6:37 ` [PATCH v2 4/4] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: add POWER key support Nick Xie
2026-02-28  6:37   ` Nick Xie
2026-03-26  9:06 ` [PATCH v2 0/4] arm64: dts: amlogic: meson-s4-khadas-vim1s: enable LEDs, Keys and Bluetooth Neil Armstrong
2026-03-26  9:06   ` Neil Armstrong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260228063750.701887-4-nick@khadas.com \
    --to=nick@khadas.com \
    --cc=conor+dt@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=jbrunet@baylibre.com \
    --cc=khilman@baylibre.com \
    --cc=krzk+dt@kernel.org \
    --cc=linux-amlogic@lists.infradead.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=martin.blumenstingl@googlemail.com \
    --cc=neil.armstrong@linaro.org \
    --cc=robh@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.