linux-kernel - [PATCH v2 2/5] drm/msm/a6xx: Add support for A650 speed binning

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Message-Id: <20230120172233.1905761-3-konrad.dybcio@linaro.org>
Date:   Fri, 20 Jan 2023 18:22:30 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     linux-arm-msm@...r.kernel.org, andersson@...nel.org,
        agross@...nel.org, krzysztof.kozlowski@...aro.org
Cc:     marijn.suijten@...ainline.org,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Akhil P Oommen <quic_akhilpo@...cinc.com>,
        Chia-I Wu <olvaffe@...il.com>, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/5] drm/msm/a6xx: Add support for A650 speed binning

Add support for matching QFPROM fuse values to get the correct speed bin
on A650 (SM8250) GPUs.

Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 0ee8cb3e490c..c5f5d0bb3fdc 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1894,6 +1894,20 @@ static u32 a640_get_speed_bin(u32 fuse)
 	return UINT_MAX;
 }
 
+static u32 a650_get_speed_bin(u32 fuse)
+{
+	if (fuse == 0)
+		return 0;
+	else if (fuse == 1)
+		return 1;
+	else if (fuse == 2)
+		return 2;
+	else if (fuse == 3)
+		return 3;
+
+	return UINT_MAX;
+}
+
 static u32 adreno_7c3_get_speed_bin(u32 fuse)
 {
 	if (fuse == 0)
@@ -1922,6 +1936,9 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_rev rev, u32 fuse)
 	if (adreno_cmp_rev(ADRENO_REV(6, 4, 0, ANY_ID), rev))
 		val = a640_get_speed_bin(fuse);
 
+	if (adreno_cmp_rev(ADRENO_REV(6, 5, 0, ANY_ID), rev))
+		val = a650_get_speed_bin(fuse);
+
 	if (val == UINT_MAX) {
 		DRM_DEV_ERROR(dev,
 			"missing support for speed-bin: %u. Some OPPs may not be supported by hardware\n",
-- 
2.39.1