diff options
| author | Donghan Ryu <dryu@nvidia.com> | 2011-12-08 11:24:24 +0900 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-15 13:56:13 +0530 |
| commit | 0dc01f93873b8d3e6b4b5ca175035fe61121ddde (patch) | |
| tree | bd96dc2397f3770a3cbb376b9729a6730dced6a5 /drivers/video/tegra/host/t30 | |
| parent | bc9ae65ae8705f832af06708f911b776b2236a6f (diff) | |
video: tegra: host: max emc rate when 3d is on
Currently, EMC rate is mostly controlled by CPU frequency
assuming that higher CPU freqeuncy requires more mem B/W.
However, some of the 3d apps makes GPU very busy while CPU
is mostly idle. This patch changes HOST_EMC_FLOOR to UINT_MAX
allowing GPU to utilize full mem B/W when it is active.
This may be re-visited when 3d scaling is enabled since we might
be able to scale EMC rate dynamically based on 3d rate.
Bug 911223
Change-Id: I8eb7b3991abe3bd664441bfc1f43075984dafcaa
Signed-off-by: Donghan Ryu <dryu@nvidia.com>
Reviewed-on: http://git-master/r/68650
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Diffstat (limited to 'drivers/video/tegra/host/t30')
| -rw-r--r-- | drivers/video/tegra/host/t30/channel_t30.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/video/tegra/host/t30/channel_t30.c b/drivers/video/tegra/host/t30/channel_t30.c index fbd0227ad513..0bd7e5246635 100644 --- a/drivers/video/tegra/host/t30/channel_t30.c +++ b/drivers/video/tegra/host/t30/channel_t30.c @@ -43,7 +43,6 @@ #define NVMODMUTEX_DSI (9) #define NV_FIFO_READ_TIMEOUT 200000 -#define HOST_EMC_FLOOR 300000000 #ifndef TEGRA_POWERGATE_3D1 #define TEGRA_POWERGATE_3D1 -1 #endif @@ -78,7 +77,7 @@ const struct nvhost_channeldesc nvhost_t30_channelmap[] = { .suspend = nvhost_scale3d_suspend, .clocks = {{"gr3d", UINT_MAX}, {"gr3d2", UINT_MAX}, - {"emc", HOST_EMC_FLOOR} }, + {"emc", UINT_MAX} }, .powergate_ids = {TEGRA_POWERGATE_3D, TEGRA_POWERGATE_3D1}, NVHOST_DEFAULT_CLOCKGATE_DELAY, @@ -96,7 +95,7 @@ const struct nvhost_channeldesc nvhost_t30_channelmap[] = { .module = { .clocks = {{"gr2d", 0}, {"epp", 0}, - {"emc", HOST_EMC_FLOOR} }, + {"emc", 300000000} }, NVHOST_MODULE_NO_POWERGATE_IDS, .clockgate_delay = 0, }, |