Commit 432f51e7 authored by Michael Walle's avatar Michael Walle Committed by Lucas Stach
Browse files

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: default avatarMichael Walle <michael@walle.cc>
Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
parent 12495f4e

drivers/gpu/drm/etnaviv/etnaviv_gpu.c

+6 −0
Original line number Diff line number Diff line
@@ -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;