Stefan Wahren <info@xxxxxxxxxxxxxx> writes:
> Am 09.10.2015 um 23:27 schrieb Eric Anholt:
>> VC4 is the GPU (display and 3D) present on the 2835.
>>
>> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
>> ---
>>
>> v2: Sort by register address, mark HDMI as disabled by default in the
>> SoC file and enable it from -rpi.
>>
>> v3: Add references to the pixel/HSM clocks for HDMI. Rename
>> compatibility strings and clean up node names.
>>
>> arch/arm/boot/dts/bcm2835-rpi.dtsi | 4 ++++
>> arch/arm/boot/dts/bcm2835.dtsi | 42 ++++++++++++++++++++++++++++++++++++++
>> 2 files changed, 46 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
>> index 3572f03..dcaaee2 100644
>> --- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
>> +++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
>> @@ -56,6 +56,10 @@
>> status = "okay";
>> };
>>
>> +&hdmi {
>> + status = "okay";
>> +};
>> +
>> &sdhci {
>> status = "okay";
>> bus-width = <4>;
>> diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
>> index 1e61eb7..21e354a9 100644
>> --- a/arch/arm/boot/dts/bcm2835.dtsi
>> +++ b/arch/arm/boot/dts/bcm2835.dtsi
>> @@ -1,4 +1,5 @@
>> #include <dt-bindings/pinctrl/bcm2835.h>
>> +#include <dt-bindings/gpio/gpio.h>
>> #include <dt-bindings/clock/bcm2835.h>
>> #include "skeleton.dtsi"
>>
>> @@ -149,6 +150,18 @@
>> status = "disabled";
>> };
>>
>> + pixelvalve@7e206000 {
>> + compatible = "brcm,bcm2835-pixelvalve0";
>> + reg = <0x7e206000 0x100>;
>> + interrupts = <2 13>; /* pwa2 */
>
> According to BCM2835-ARM-Peripherals this should be pwa0.
>
> Is it just a typo?
> What does pwa mean?
Just a typo. I don't know what pwa means, either, it's just a string so
you can search for it in the docs.
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