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Commit 643a39bf authored by Oleg Perelet's avatar Oleg Perelet
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msm: kgsl: Hold GMU in reset during initialization 



In scenarious when cx_gdsc is on over slumber
we need to keep GMU from executing code until fully
initialized.

Signed-off-by: default avatarOleg Perelet <operelet@codeaurora.org>
Change-Id: I90740a19961dc27f217f2ddcf383ae776a3bb7a9
parent f6fbeafa

drivers/gpu/msm/adreno_a6xx_gmu.c

+4 −5
Original line number Diff line number Diff line
@@ -322,11 +322,6 @@ static int a6xx_gmu_start(struct kgsl_device *device) 
	struct gmu_device *gmu = KGSL_GMU_DEVICE(device);



	kgsl_regwrite(device, A6XX_GMU_CX_GMU_WFI_CONFIG, 0x0);

	/* Write 1 first to make sure the GMU is reset */

	gmu_core_regwrite(device, A6XX_GMU_CM3_SYSRESET, 1);



	/* Make sure putting in reset doesn't happen after clearing */

	wmb();



	/* Bring GMU out of reset */

	gmu_core_regwrite(device, A6XX_GMU_CM3_SYSRESET, 0);
@@ -944,6 +939,10 @@ static int a6xx_gmu_fw_start(struct kgsl_device *device, 
	int ret;

	unsigned int chipid = 0;



	gmu_core_regwrite(device, A6XX_GMU_CM3_SYSRESET, 1);

	/* Make sure M3 is in reset before going on */

	wmb();



	switch (boot_state) {

	case GMU_COLD_BOOT:

		/* Turn on TCM retention */