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Commit 7b0e551d authored by Oleg Perelet's avatar Oleg Perelet
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msm: kgsl: Place GMU in reset before entering slumber 



Force GMU CM3 core in reset before entering slumber
state.

Change-Id: I8d88242ef7f9f42993d9bd495bfa4686c8c14847
Signed-off-by: default avatarOleg Perelet <operelet@codeaurora.org>
parent 3fd2e0f2

drivers/gpu/msm/adreno_a6xx_gmu.c

+4 −4
Original line number Diff line number Diff line
@@ -421,6 +421,10 @@ static int a6xx_rpmh_power_off_gpu(struct kgsl_device *device) 
	if (test_bit(GMU_RSCC_SLEEP_SEQ_DONE, &device->gmu_core.flags))

		return 0;



	gmu_core_regwrite(device, A6XX_GMU_CM3_SYSRESET, 1);

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

	wmb();



	/* RSC sleep sequence is different on v1 */

	if (adreno_is_a630v1(adreno_dev))

		gmu_core_regwrite(device, A6XX_RSCC_TIMESTAMP_UNIT1_EN_DRV0, 1);
@@ -922,10 +926,6 @@ 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 */