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-rw-r--r--target/linux/brcm2708/patches-4.4/0212-BCM270X_DT-Add-pi3-act-led-overlay.patch94
1 files changed, 94 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0212-BCM270X_DT-Add-pi3-act-led-overlay.patch b/target/linux/brcm2708/patches-4.4/0212-BCM270X_DT-Add-pi3-act-led-overlay.patch
new file mode 100644
index 0000000000..c3f0ea0930
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0212-BCM270X_DT-Add-pi3-act-led-overlay.patch
@@ -0,0 +1,94 @@
+From 10cd986960d2ad1fd881fa3338af40e612076ba4 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Wed, 23 Mar 2016 15:57:14 +0000
+Subject: [PATCH 212/232] BCM270X_DT: Add pi3-act-led overlay
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ arch/arm/boot/dts/overlays/Makefile | 1 +
+ arch/arm/boot/dts/overlays/README | 19 +++++++++++++++
+ arch/arm/boot/dts/overlays/pi3-act-led-overlay.dts | 27 ++++++++++++++++++++++
+ 3 files changed, 47 insertions(+)
+ create mode 100644 arch/arm/boot/dts/overlays/pi3-act-led-overlay.dts
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -39,6 +39,7 @@ dtbo-$(RPI_DT_OVERLAYS) += mcp2515-can0.
+ dtbo-$(RPI_DT_OVERLAYS) += mcp2515-can1.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += mmc.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += mz61581.dtbo
++dtbo-$(RPI_DT_OVERLAYS) += pi3-act-led.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += pi3-disable-bt.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += pi3-miniuart-bt.dtbo
+ dtbo-$(RPI_DT_OVERLAYS) += piscreen.dtbo
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -136,12 +136,14 @@ Params:
+
+ act_led_activelow Set to "on" to invert the sense of the LED
+ (default "off")
++ N.B. For Pi3 see pi3-act-led overlay.
+
+ act_led_gpio Set which GPIO to use for the activity LED
+ (in case you want to connect it to an external
+ device)
+ (default "16" on a non-Plus board, "47" on a
+ Plus or Pi 2)
++ N.B. For Pi3 see pi3-act-led overlay.
+
+ pwr_led_trigger
+ pwr_led_activelow
+@@ -499,6 +501,23 @@ Params: speed Display
+ [ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ]
+
+
++Name: pi3-act-led
++Info: Pi3 uses a GPIO expander to drive the LEDs which can only be accessed
++ from the VPU. There is a special driver for this with a separate DT
++ node, which has the unfortunate consequence of breaking the
++ act_led_gpio and act_led_activelow dtparams.
++ This overlay changes the GPIO controller back to the standard one and
++ restores the dtparams.
++Load: dtoverlay=pi3-act-led,<param>=<val>
++Params: activelow Set to "on" to invert the sense of the LED
++ (default "off")
++
++ gpio Set which GPIO to use for the activity LED
++ (in case you want to connect it to an external
++ device)
++ REQUIRED
++
++
+ Name: pi3-disable-bt
+ Info: Disable Pi3 Bluetooth and restore UART0/ttyAMA0 over GPIOs 14 & 15
+ N.B. To disable the systemd service that initialises the modem so it
+--- /dev/null
++++ b/arch/arm/boot/dts/overlays/pi3-act-led-overlay.dts
+@@ -0,0 +1,27 @@
++/dts-v1/;
++/plugin/;
++
++/* Pi3 uses a GPIO expander to drive the LEDs which can only be accessed
++ from the VPU. There is a special driver for this with a separate DT node,
++ which has the unfortunate consequence of breaking the act_led_gpio and
++ act_led_activelow dtparams.
++
++ This overlay changes the GPIO controller back to the standard one and
++ restores the dtparams.
++*/
++
++/{
++ compatible = "brcm,bcm2708";
++
++ fragment@0 {
++ target = <&act_led>;
++ frag0: __overlay__ {
++ gpios = <&gpio 0 0>;
++ };
++ };
++
++ __overrides__ {
++ gpio = <&frag0>,"gpios:4";
++ activelow = <&frag0>,"gpios:8";
++ };
++};