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Message-Id: <20230223-topic-gmuwrapper-v8-18-69c68206609e@linaro.org>
Date: Mon, 29 May 2023 15:52:37 +0200
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: 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>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...ainline.org>,
Akhil P Oommen <quic_akhilpo@...cinc.com>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Rob Clark <robdclark@...omium.org>,
Marijn Suijten <marijn.suijten@...ainline.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH v8 18/18] drm/msm/a6xx: Add A610 speedbin support
A610 is implemented on at least three SoCs: SM6115 (bengal), SM6125
(trinket) and SM6225 (khaje). Trinket does not support speed binning
(only a single SKU exists) and we don't yet support khaje upstream.
Hence, add a fuse mapping table for bengal to allow for per-chip
frequency limiting.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
---
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index d046af5f6de2..c304fa118cff 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -2098,6 +2098,30 @@ static bool a6xx_progress(struct msm_gpu *gpu, struct msm_ringbuffer *ring)
return progress;
}
+static u32 a610_get_speed_bin(u32 fuse)
+{
+ /*
+ * There are (at least) three SoCs implementing A610: SM6125 (trinket),
+ * SM6115 (bengal) and SM6225 (khaje). Trinket does not have speedbinning,
+ * as only a single SKU exists and we don't support khaje upstream yet.
+ * Hence, this matching table is only valid for bengal and can be easily
+ * expanded if need be.
+ */
+
+ if (fuse == 0)
+ return 0;
+ else if (fuse == 206)
+ return 1;
+ else if (fuse == 200)
+ return 2;
+ else if (fuse == 157)
+ return 3;
+ else if (fuse == 127)
+ return 4;
+
+ return UINT_MAX;
+}
+
static u32 a618_get_speed_bin(u32 fuse)
{
if (fuse == 0)
@@ -2195,6 +2219,9 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_gpu *adreno_gpu, u3
{
u32 val = UINT_MAX;
+ if (adreno_is_a610(adreno_gpu))
+ val = a610_get_speed_bin(fuse);
+
if (adreno_is_a618(adreno_gpu))
val = a618_get_speed_bin(fuse);
--
2.40.1
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