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Commit fbca1995 authored by Kamal Agrawal's avatar Kamal Agrawal
Browse files

msm: kgsl: Do not capture DTCM on gmu boot failure 



Accessing DTCM can cause NoC error sometimes if GMU is accessing
any of its TCMs at the same time as host.

Change-Id: I3d7a3169620854dbd659f378c216a7b15435c914
Signed-off-by: default avatarHarshdeep Dhatt <hdhatt@codeaurora.org>
Signed-off-by: default avatarKamal Agrawal <quic_kamaagra@quicinc.com>
parent ba55275e

drivers/gpu/msm/adreno_a6xx_gmu.c

+3 −10
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.

 */



/* soc/qcom/cmd-db.h needs types.h */
@@ -388,19 +389,11 @@ static int a6xx_gmu_start(struct kgsl_device *device) 
	gmu_core_regwrite(device, A6XX_GMU_CM3_SYSRESET, 0);

	/* Make sure the request completes before continuing */

	wmb();



	if (timed_poll_check(device,

			A6XX_GMU_CM3_FW_INIT_RESULT,

			val, GMU_START_TIMEOUT, mask)) {

		u32 val;



		/*

		 * The breadcrumb is written to a gmu virtual mapping

		 * which points to dtcm byte offset 0x3fdc.

		 */

		gmu_core_regread(device,

			A6XX_GMU_CM3_DTCM_START + (0x3fdc >> 2), &val);

		dev_err(&gmu->pdev->dev, "GMU doesn't boot: 0x%x\n", val);



		dev_err(&gmu->pdev->dev, "GMU doesn't boot\n");

		return -ETIMEDOUT;

	}