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| author |   Michael Walle <michael@walle.cc> | 2021-06-18 14:04:33 +0200 |
|---|---|---|
| committer |   Lucas Stach <l.stach@pengutronix.de> | 2021-07-06 18:31:27 +0200 |
| commit | 432f51e7deedadceaf99a953a6f0a7b30c8155f9 (patch) | |
| tree | 37cb15c46ed432196bd4ffa5436744497032df5d /drivers/gpu/drm/etnaviv/etnaviv_gpu.c | |
| parent | drm/etnaviv: add HWDB entry for GC7000 r6202 (diff) | |
| download | linux-dev-432f51e7deedadceaf99a953a6f0a7b30c8155f9.tar.xz linux-dev-432f51e7deedadceaf99a953a6f0a7b30c8155f9.zip | |
drm/etnaviv: add clock gating workaround for GC7000 r6202
The LS1028A SoC errata sheet mentions A-050121 "GPU hangs if clock
gating for Rasterizer, Setup Engine and Texture Engine are enabled".
The workaround is to disable the corresponding clock gatings.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_gpu.c')
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 4102bcea3341..c297fffe06eb 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -613,6 +613,12 @@ static void etnaviv_gpu_enable_mlcg(struct etnaviv_gpu *gpu) etnaviv_is_model_rev(gpu, GC2000, 0x5108)) pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_TX; + /* Disable SE, RA and TX clock gating on affected core revisions. */ + if (etnaviv_is_model_rev(gpu, GC7000, 0x6202)) + pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_SE | + VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA | + VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_TX; + pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_HZ; pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ; |