On 09/25/2014 07:27 AM, Sjoerd Simons wrote:
Playing a bit with todays linux-next on my jetson, it seems this patch is still required for enabling the GPU. Is there anything blocking it (firmware not available yet in liux-firmware?)
I think initially I was waiting for the DRM patch "drm/nouvea: support for probing platform devices" to be applied, but it looks like that's been applied already, so only patches 4 and 5 in this series are still outstanding.
Alex, wasn't there also some issue where the VPR register had to be programmed, and if it wasn't there'd be a hang when the GPU registers were touched? If we've added code to Nouveau/tegradrm to detect that and avoid the problem, then I guess we can commit these last two patches for 3.19. A resend after the 3.18 merge window might help.
On Mon, May 19, 2014 at 06:24:10PM +0900, Alexandre Courbot wrote:Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx> --- arch/arm/boot/dts/tegra124-jetson-tk1.dts | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts index e31fb61a81d3..15a194d1277f 100644 --- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts +++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts @@ -30,6 +30,12 @@ }; }; + gpu@0,57000000 { + status = "okay"; + + vdd-supply = <&vdd_gpu>; + }; + pinmux: pinmux@0,70000868 { pinctrl-names = "default"; pinctrl-0 = <&state_default>; @@ -1505,7 +1511,7 @@ regulator-always-on; }; - sd6 { + vdd_gpu: sd6 { regulator-name = "+VDD_GPU_AP"; regulator-min-microvolt = <650000>; regulator-max-microvolt = <1200000>;
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