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drm/exynos/decon5433: fix CMU programming

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DECON_CMU register has reserved bits which should not be zeroed, otherwise
IP can behave strangely and cause IOMMU faults.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2017-01-17 15:15:19 +01:00 committed by Inki Dae
parent 4151e9a61c
commit 1202a09632
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/exynos/exynos5433_drm_decon.c
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@ -142,10 +142,6 @@ static void decon_commit(struct exynos_drm_crtc *crtc)
m->crtc_vsync_end = m->crtc_vsync_start + 1;
}
/* enable clock gate */
val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
writel(val, ctx->addr + DECON_CMU);
if (ctx->out_type & (IFTYPE_I80 | I80_HW_TRG))
decon_setup_trigger(ctx);