mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 06:33:41 +00:00
2b1c6b21b5
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
95 lines
3.5 KiB
Diff
95 lines
3.5 KiB
Diff
From 48ba5a6ae0158827e416d8b8cd21680672737b79 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Wed, 23 Mar 2016 15:57:14 +0000
|
|
Subject: [PATCH] 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";
|
|
+ };
|
|
+};
|