Commit 8ce44c5b authored Jul 29, 2020 by Nirmal Abraham Committed by Gerrit - the friendly Code Review server Sep 11, 2020

fbdev: msm: Disable EARLY_MAP setting at bootup



Disable the SMMU EARLY_MAP attribute for MDP Unsecure CB
at bootup for continuous splash disabled case. Keeping it
enabled causes SMMU to access the cpu_addr instead of
dma_addr in subsequent memory access resulting in DSI
and MDP failures.

Change-Id: Ica1b29f5862459b71bc6e7ab944eaabd57299028
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>

parent da2a0248

drivers/video/fbdev/msm/mdss_mdp_overlay.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1507,6 +1507,12 @@ int mdss_mdp_overlay_start(struct msm_fb_data_type *mfd)
		goto end;
		}
		mdss_hw_init(mdss_res);
		/*
		* As splash is not enabled, disable EARLY_MAP setting which was
		* enabled through DT before first kickoff.
		*/
		mdss_smmu_set_attribute(MDSS_IOMMU_DOMAIN_UNSECURE,
		EARLY_MAP, 0);
		mdss_iommu_ctrl(0);
		}