Commit 6ab410e0 authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Rob Clark
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drm/msm/a6xx: Improve GMU force shutdown sequence 



The GMU force shutdown sequence involves some additional register cleanup
which was not implemented previously. Do so.

Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/543340/


Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
parent 5e46ad83

drivers/gpu/drm/msm/adreno/a6xx_gmu.c

+7 −0
Original line number Diff line number Diff line
@@ -899,6 +899,13 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu) 
	/* Make sure there are no outstanding RPMh votes */

	a6xx_gmu_rpmh_off(gmu);



	/* Clear the WRITEDROPPED fields and put fence into allow mode */

	gmu_write(gmu, REG_A6XX_GMU_AHB_FENCE_STATUS_CLR, 0x7);

	gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0);



	/* Make sure the above writes go through */

	wmb();



	/* Halt the gmu cm3 core */

	gmu_write(gmu, REG_A6XX_GMU_CM3_SYSRESET, 1);