On Mon, Apr 11, 2016 at 11:05 AM, Stephen Warren <swarren@xxxxxxxxxxxxx> wrote:
> On 04/11/2016 08:01 AM, Thierry Reding wrote:
>>
>> From: Thierry Reding <treding@xxxxxxxxxx>
>>
>> When Tegra124 support was first merged the unit-addresses of all devices
>> were listed with a "0," prefix to encode the reg property's second cell.
>> It turns out that this notation is not correct, and the "," separator is
>> only used to separate fields in the unit address (such as the device and
>> function number in PCI devices), not individual cells for addresses with
>> more than one cell.
>
>
>> diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts
>> b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
>
>
>> - gpu@0,57000000 {
>> + gpu@57000000 {
>> /*
>> * Node left disabled on purpose - the bootloader will
>> enable
>> * it after having set the VPR up
>
>
> So the bootloader doesn't actually do that for the new node name at present.
> I have written a patch to make it do so, but haven't sent it yet since I
> wrote it in the middle of a large cleanup of U-Boot. I expect I can shuffle
> it to the front of the series and send it soon though. Without a new
> bootloader that contains this change, IIUC all graphics will be
> non-operative if this change is applied.
Then you should leave this one alone for a while.
I also found this looking at u-boot:
arch/arm/dts/tegra124.dtsi: gpu@57000000 {
Sigh...
Rob
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