search for: reset_control_assert

...ns { ... gpu { resets = <&tegra_car 184>, <&mc TEGRA_SWGROUP_GPU>; reset-names = "module", "client"; }; ... }; }; The PMC driver could then grab the "module" and "client" resets and do something like this: reset_control_assert(powergate->rst_client); reset_control_assert(powergate->rst_module); reset_control_deassert(powergate->rst_module); reset_control_deassert(powergate->rst_client); Optionally the above could be extended with a reset_control_status()- loop. Alternatively reset_control_assert() would b...

...;, > <&mc TEGRA_SWGROUP_GPU>; > reset-names = "module", "client"; > }; > > ... > }; > }; > > The PMC driver could then grab the "module" and "client" resets and do > something like this: > > reset_control_assert(powergate->rst_client); > reset_control_assert(powergate->rst_module); > reset_control_deassert(powergate->rst_module); > reset_control_deassert(powergate->rst_client); > > Optionally the above could be extended with a reset_control_status()- > loop. Alternatively...

...ice/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c index 6474bd2a6d07..3d42cdbbe9c0 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -51,10 +51,12 @@ nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev) reset_control_assert(tdev->rst); udelay(10); - ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); - if (ret) - goto err_clamp; - udelay(10); + if (!tdev->pdev->dev.pm_domain) { + ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); + if (ret) + goto err_clamp; + udelay(10); + } rese...

...nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) > { > int err; > > + tegra_mc_flush(gpu->mc, gpu->swgroup, true); > + udelay(10); > + > + err = tegra_powergate_gpu_set_clamping(true); > + if (err) > + return err; > + udelay(10); > + > reset_control_assert(gpu->rst); > udelay(10); > > @@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) > return 0; > } > > +static int nouveau_platform_get_mc(struct device *dev, > + struct tegra_mc **mc, unsigned int *swgroup) Uhm, no. If th...

...>> int err; > >>+ tegra_mc_flush(gpu->mc, gpu->swgroup, true); > >>+ udelay(10); > >>+ > >>+ err = tegra_powergate_gpu_set_clamping(true); > >>+ if (err) > >>+ return err; > >>+ udelay(10); > >>+ > >> reset_control_assert(gpu->rst); > >> udelay(10); > >>@@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) > >> return 0; > >> } > >>+static int nouveau_platform_get_mc(struct device *dev, > >>+ struct tegra_mc **mc, u...

...pu->swgroup, true); > >>>>+ udelay(10); > >>>>+ > >>>>+ err = tegra_powergate_gpu_set_clamping(true); > >>>>+ if (err) > >>>>+ return err; > >>>>+ udelay(10); > >>>>+ > >>>> reset_control_assert(gpu->rst); > >>>> udelay(10); > >>>>@@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) > >>>> return 0; > >>>> } > >>>>+static int nouveau_platform_get_mc(struct device *dev,...

Hi, This series includes some pieces of fixes to complete the GK20A power on/off sequences and add the suspend/resume support. The patches 1/11 - 4/11 are based on the linux-next-20141219. The patches 5/11 - 11/11 are based on the branch "linux-3.19" of Ben Skeggs's tree (http://cgit.freedesktop.org/~darktama/nouveau). Thanks, Vince Vince Hsu (4): (linux-next-20141219) ARM:

...; > >>>>>>+ > >>>>>>+ err = tegra_powergate_gpu_set_clamping(true); > >>>>>>+ if (err) > >>>>>>+ return err; > >>>>>>+ udelay(10); > >>>>>>+ > >>>>>> reset_control_assert(gpu->rst); > >>>>>> udelay(10); > >>>>>>@@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) > >>>>>> return 0; > >>>>>> } > >>>>>>+static int nou...

...gpu) +{ + int err; + + err = regulator_enable(gpu->vdd); + if (err) + goto err_power; + + err = clk_prepare_enable(gpu->clk); + if (err) + goto err_clk; + err = clk_prepare_enable(gpu->clk_pwr); + if (err) + goto err_clk_pwr; + clk_set_rate(gpu->clk_pwr, 204000000); + udelay(10); + + reset_control_assert(gpu->rst); + udelay(10); + + err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); + if (err) + goto err_clamp; + udelay(10); + + reset_control_deassert(gpu->rst); + udelay(10); + + return 0; + +err_clamp: + clk_disable_unprepare(gpu->clk_pwr); +err_clk_pwr: + clk_disable_unprepare(g...

...ivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c index 3d42cdbbe9c0..189ed80e21ff 100644 --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c @@ -82,9 +82,6 @@ nvkm_device_tegra_power_down(struct nvkm_device_tegra *tdev) { int ret; - reset_control_assert(tdev->rst); - udelay(10); - clk_disable_unprepare(tdev->clk_pwr); if (tdev->clk_ref) clk_disable_unprepare(tdev->clk_ref); -- 2.13.0

.../drm/nouveau/nvkm/engine/device/tegra.c > index 6474bd2a6d07..3d42cdbbe9c0 100644 > --- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > +++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c > @@ -51,10 +51,12 @@ nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev) > reset_control_assert(tdev->rst); > udelay(10); > > - ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); > - if (ret) > - goto err_clamp; > - udelay(10); > + if (!tdev->pdev->dev.pm_domain) { > + ret = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); > + if (ret) &g...

...); + return 0; err_clamp: @@ -77,6 +82,14 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) { int err; + tegra_mc_flush(gpu->mc, gpu->swgroup, true); + udelay(10); + + err = tegra_powergate_gpu_set_clamping(true); + if (err) + return err; + udelay(10); + reset_control_assert(gpu->rst); udelay(10); @@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) return 0; } +static int nouveau_platform_get_mc(struct device *dev, + struct tegra_mc **mc, unsigned int *swgroup) +{ + struct of_phandle_args args; + struct platform_dev...

This series adds support for probing platform devices on Nouveau, as well as the DT bindings for GK20A. It doesn't enable the GPU yet on Tegra boards since a few extra things need to be supported before that. This version is mostly identical to v2 but fixes an important issue: the drvdata must be set to the drm_device for sysfs to work, so the platform device structure now includes the

..._gpu *gpu) >> { >> int err; >> >> + tegra_mc_flush(gpu->mc, gpu->swgroup, true); >> + udelay(10); >> + >> + err = tegra_powergate_gpu_set_clamping(true); >> + if (err) >> + return err; >> + udelay(10); >> + >> reset_control_assert(gpu->rst); >> udelay(10); >> >> @@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) >> return 0; >> } >> >> +static int nouveau_platform_get_mc(struct device *dev, >> + struct tegra_mc **mc, u...

This series adds support for probing platform devices on Nouveau, as well as the DT bindings for GK20A. It doesn't enable the GPU yet on Tegra boards since a few extra things need to be supported before that. Thanks to the input received for v1, this version is more self-contained and shares less stuff between nouveau_drm and nouveau_platform. The major change is that nouveau_platform is now

...+ if (err) > + goto err_power; > + > + err = clk_prepare_enable(gpu->clk); > + if (err) > + goto err_clk; > + err = clk_prepare_enable(gpu->clk_pwr); > + if (err) > + goto err_clk_pwr; > + clk_set_rate(gpu->clk_pwr, 204000000); > + udelay(10); > + > + reset_control_assert(gpu->rst); > + udelay(10); > + > + err = tegra_powergate_remove_clamping(TEGRA_POWERGATE_3D); > + if (err) > + goto err_clamp; > + udelay(10); > + > + reset_control_deassert(gpu->rst); > + udelay(10); > + > + return 0; > + > +err_clamp: > + clk_disab...

...; + tegra_mc_flush(gpu->mc, gpu->swgroup, true); >>>> + udelay(10); >>>> + >>>> + err = tegra_powergate_gpu_set_clamping(true); >>>> + if (err) >>>> + return err; >>>> + udelay(10); >>>> + >>>> reset_control_assert(gpu->rst); >>>> udelay(10); >>>> @@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) >>>> return 0; >>>> } >>>> +static int nouveau_platform_get_mc(struct device *dev, >>>> +...

...gt;>>> + udelay(10); >>>>>> + >>>>>> + err = tegra_powergate_gpu_set_clamping(true); >>>>>> + if (err) >>>>>> + return err; >>>>>> + udelay(10); >>>>>> + >>>>>> reset_control_assert(gpu->rst); >>>>>> udelay(10); >>>>>> @@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) >>>>>> return 0; >>>>>> } >>>>>> +static int nouveau_platform_get_mc...

...;+ > > >>>>>>+ err = tegra_powergate_gpu_set_clamping(true); > > >>>>>>+ if (err) > > >>>>>>+ return err; > > >>>>>>+ udelay(10); > > >>>>>>+ > > >>>>>> reset_control_assert(gpu->rst); > > >>>>>> udelay(10); > > >>>>>>@@ -91,6 +104,31 @@ static int nouveau_platform_power_down(struct nouveau_platform_gpu *gpu) > > >>>>>> return 0; > > >>>>>> } > > >>>&g...

From: Thierry Reding <treding at nvidia.com> Hi Ben, here's a revised subset of the patches I had sent out a couple of weeks ago. I've reworked the BAR2 accesses in the way that you had suggested, which at least for GP10B turned out to be fairly trivial to do. I have not looked in detail at this for GV11B yet, but a cursory look showed that BAR2 is accessed in more places, so the