diff options
| author | Stephen Warren <swarren@wwwdotorg.org> | 2013-12-26 19:43:10 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2014-01-02 12:08:03 -0800 |
| commit | 5631e7f4e29b1ebf3d856614c0b5876463857da6 (patch) | |
| tree | d7d2f785fd040dbe0ac233efdbf247b0c3c74e99 /arch | |
| parent | c53cb8d6a2cbcf9d85f5129e9efd4a0275f89d03 (diff) | |
ARM: bcm2835: add USB controller to device tree
The BCM2835 SoC contains a DWC2 USB controller. Add this to the DT.
Set up the pin controller to fully enable the USB controller on the
Raspberry Pi. The GPIO setup works because the default output value for
GPIO 6 (LAN_RUN/n_reset) just happens to be 1, which enables the
USB/LAN chip.
Note that you'll need a U-Boot which enables power to the USB controller;
search for U-Boot patch "ARM: rpi_b: power on SDHCI and USB HW modules".
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/bcm2835-rpi-b.dts | 9 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm2835.dtsi | 6 |
2 files changed, 13 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/bcm2835-rpi-b.dts b/arch/arm/boot/dts/bcm2835-rpi-b.dts index 6e9deb786a7..2a3b1c1313a 100644 --- a/arch/arm/boot/dts/bcm2835-rpi-b.dts +++ b/arch/arm/boot/dts/bcm2835-rpi-b.dts @@ -23,10 +23,15 @@ &gpio { pinctrl-names = "default"; - pinctrl-0 = <&alt0 &alt3>; + pinctrl-0 = <&gpioout &alt0 &alt3>; + + gpioout: gpioout { + brcm,pins = <6>; + brcm,function = <1>; /* GPIO out */ + }; alt0: alt0 { - brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11 14 15 40 45>; + brcm,pins = <0 1 2 3 4 5 7 8 9 10 11 14 15 40 45>; brcm,function = <4>; /* alt0 */ }; diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index aa537ed13f0..b021c96d3ba 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -107,6 +107,12 @@ clocks = <&clk_mmc>; status = "disabled"; }; + + usb { + compatible = "brcm,bcm2835-usb"; + reg = <0x7e980000 0x10000>; + interrupts = <1 9>; + }; }; clocks { |