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drm/etnaviv: add clock gating workaround for GC7000 r6202

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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>
This commit is contained in:
Michael Walle
2021-06-18 14:04:33 +02:00
committed by Lucas Stach
parent 12495f4eb2
commit 432f51e7de
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/etnaviv/etnaviv_gpu.c
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@@ -613,6 +613,12 @@ static void etnaviv_gpu_enable_mlcg(struct etnaviv_gpu *gpu)
etnaviv_is_model_rev(gpu, GC2000, 0x5108)) etnaviv_is_model_rev(gpu, GC2000, 0x5108))
pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_TX; 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_HZ;
pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ; pmc |= VIVS_PM_MODULE_CONTROLS_DISABLE_MODULE_CLOCK_GATING_RA_EZ;