nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-23 18:16:01 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: gp10b: set floor emc freq to bwmgr

Browse Source 
Set emc floor frequency as zero during rail-gate and set max emc
frequency as floor frequency during rail-ungate.

Bug 1770241

Change-Id: Ib6b6ea6c8b04518423126c3ca3600b4afac15180
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/1152848
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Seshendra Gadagottu
2016-05-24 16:47:13 -07:00
committed by Deepak Nibade
parent 1e67de6e6e
commit ba949fd8af
1 changed files with 15 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
View File

@@ -220,6 +220,13 @@ static bool gp10b_tegra_is_railgated(struct device *dev)
static int gp10b_tegra_railgate(struct device *dev)
{
struct gk20a_platform *platform = gk20a_get_platform(dev);
struct gk20a_scale_profile *profile = platform->g->scale_profile;
/* remove emc frequency floor */
if (profile)
tegra_bwmgr_set_emc(
(struct tegra_bwmgr_client *)profile->private_data,
0, TEGRA_BWMGR_SET_EMC_FLOOR);
if (tegra_bpmp_running() &&
tegra_powergate_is_powered(TEGRA_POWERGATE_GPU)) {
@@ -237,6 +244,7 @@ static int gp10b_tegra_unrailgate(struct device *dev)
{
int ret = 0;
struct gk20a_platform *platform = gk20a_get_platform(dev);
struct gk20a_scale_profile *profile = platform->g->scale_profile;
if (tegra_bpmp_running()) {
int i;
@@ -246,6 +254,13 @@ static int gp10b_tegra_unrailgate(struct device *dev)
clk_prepare_enable(platform->clk[i]);
}
}
/* to start with set emc frequency floor to max rate*/
if (profile)
tegra_bwmgr_set_emc(
(struct tegra_bwmgr_client *)profile->private_data,
tegra_bwmgr_get_max_emc_rate(),
TEGRA_BWMGR_SET_EMC_FLOOR);
return ret;
}
@@ -407,7 +422,6 @@ struct gk20a_platform t18x_gpu_tegra_platform = {
/* frequency scaling configuration */
.prescale = gp10b_tegra_prescale,
.postscale = gp10b_tegra_postscale,
.devfreq_governor = "nvhost_podgov",
.qos_id = PM_QOS_GPU_FREQ_MIN,