raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

BCM270X_DT: Add pi3-act-led overlay

Browse Source 
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
This commit is contained in:
Phil Elwell
2016-03-23 15:57:14 +00:00
parent 26eb219f06
commit 10cd986960
3 changed files with 47 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/boot/dts/overlays/Makefile
View File

@@ -39,6 +39,7 @@ dtbo-$(RPI_DT_OVERLAYS) += mcp2515-can0.dtbo
dtbo-$(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

19
arch/arm/boot/dts/overlays/README
View File

@@ -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 SPI bus speed
[ 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

27
arch/arm/boot/dts/overlays/pi3-act-led-overlay.dts Normal file
View File

@@ -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";
};
};