linux-kernel - [PATCH v5 2/7] drm/msm/a6xx: Increase HFI response timeout

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Message-ID: <20250419-gpu-acd-v5-2-8dbab23569e0@quicinc.com>
Date: Sat, 19 Apr 2025 20:21:31 +0530
From: Akhil P Oommen <quic_akhilpo@...cinc.com>
To: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        "Konrad
 Dybcio" <konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Viresh Kumar
	<vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd
	<sboyd@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Akhil P Oommen
	<quic_akhilpo@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        "Maya
 Matuszczyk" <maccraft123mc@...il.com>,
        Anthony Ruhier <aruhier@...lbox.org>,
        Dmitry Baryshkov <lumag@...nel.org>
CC: <linux-arm-msm@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <linux-pm@...r.kernel.org>, <devicetree@...r.kernel.org>
Subject: [PATCH v5 2/7] drm/msm/a6xx: Increase HFI response timeout

When ACD feature is enabled, it triggers some internal calibrations
which result in a pretty long delay during the first HFI perf vote.
So, increase the HFI response timeout to match the downstream driver.

Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
Tested-by: Maya Matuszczyk <maccraft123mc@...il.com>
Tested-by: Anthony Ruhier <aruhier@...lbox.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_hfi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
index b256092596fbab86d4eb8c17ac7c89cf94827105..d0ddae1617c3213a1bb2cb5c18b8653c5c1689e6 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_hfi.c
@@ -109,7 +109,7 @@ static int a6xx_hfi_wait_for_ack(struct a6xx_gmu *gmu, u32 id, u32 seqnum,
 
 	/* Wait for a response */
 	ret = gmu_poll_timeout(gmu, REG_A6XX_GMU_GMU2HOST_INTR_INFO, val,
-		val & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 100, 5000);
+		val & A6XX_GMU_GMU2HOST_INTR_INFO_MSGQ, 100, 1000000);
 
 	if (ret) {
 		DRM_DEV_ERROR(gmu->dev,

-- 
2.48.1