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 at nvidia.com> >> --- >> 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 at 0,57000000 { >> + status = "okay"; >> + >> + vdd-supply = <&vdd_gpu>; >> + }; >> + >> pinmux: pinmux at 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>; >