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 <[email protected]>
---
changes since RFC:
- corrected the wording of the comment
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 6 ++++++
1 file changed, 6 insertions(+)
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;
--
2.20.1