diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0212-BCM270X_DT-Add-pi3-act-led-overlay.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0212-BCM270X_DT-Add-pi3-act-led-overlay.patch | 94 |
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 0000000..c3f0ea0 --- /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"; ++ }; ++}; |