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65 lines
2.0 KiB
Diff
65 lines
2.0 KiB
Diff
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From 11289568f8c1530a16721c9aeaae3ae1668eacbb Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Fri, 10 Mar 2023 11:22:24 +0000
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Subject: [PATCH] ARM: dts: bcm2711-rpi-400: Restore the ACT LED
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Pi 400 doesn't have an ACT LED, only a green PWR LED, but a user may
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wish to remap the ACT functionality to a GPIO on the 40-pin header.
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Restore the ACT LED declaration, but leave it disabled in order to
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prevent a GPIO being claimed until either the act_led_gpio dtparam
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or the act-led overlay is used.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/bcm2711-rpi-400.dts | 12 ++++++++----
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arch/arm/boot/dts/overlays/act-led-overlay.dts | 3 ++-
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2 files changed, 10 insertions(+), 5 deletions(-)
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--- a/arch/arm/boot/dts/bcm2711-rpi-400.dts
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+++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts
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@@ -512,16 +512,19 @@
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};
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&leds {
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+ // Declare the LED but leave it disabled, in case a user wants to map it
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+ // to a GPIO on the header
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act_led: led-act {
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default-state = "off";
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- linux,default-trigger = "default-on";
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- gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
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+ linux,default-trigger = "mmc0";
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+ gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
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+ status = "disabled";
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};
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pwr_led: led-pwr {
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default-state = "off";
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linux,default-trigger = "default-on";
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- gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
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+ gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
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};
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};
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@@ -542,7 +545,8 @@
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__overrides__ {
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audio = <&chosen>,"bootargs{on='snd_bcm2835.enable_hdmi=1',off='snd_bcm2835.enable_hdmi=0'}";
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- act_led_gpio = <&act_led>,"gpios:4";
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+ act_led_gpio = <&act_led>,"gpios:4",
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+ <&act_led>,"status=okay";
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act_led_activelow = <&act_led>,"gpios:8";
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act_led_trigger = <&act_led>,"linux,default-trigger";
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--- a/arch/arm/boot/dts/overlays/act-led-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/act-led-overlay.dts
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@@ -21,7 +21,8 @@
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};
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__overrides__ {
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- gpio = <&frag0>,"gpios:4";
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+ gpio = <&frag0>,"gpios:4",
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+ <&frag0>,"status=okay";
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activelow = <&frag0>,"gpios:8";
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};
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};
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