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drm/msm/a6xx: Add A619_holi speedbin support

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A619_holi is implemented on at least two SoCs: SM4350 (holi) and SM6375
(blair). This is what seems to be a first occurrence of this happening,
but it's easy to overcome by guarding the SoC-specific fuse values with
of_machine_is_compatible(). Do just that to enable frequency limiting
on these SoCs.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Akhil P Oommen <quic_akhilpo@quicinc.com>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/542772/
Signed-off-by: Rob Clark <robdclark@chromium.org>
This commit is contained in:
Konrad Dybcio 2023-06-16 01:21:00 +02:00 committed by Rob Clark
parent b3bcd583fa
commit 20c8e39985
1 changed files with 31 additions and 0 deletions
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31
drivers/gpu/drm/msm/adreno/a6xx_gpu.c
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@ -2216,6 +2216,34 @@ static u32 a618_get_speed_bin(u32 fuse)
return UINT_MAX;
}
static u32 a619_holi_get_speed_bin(u32 fuse)
{
/*
* There are (at least) two SoCs implementing A619_holi: SM4350 (holi)
* and SM6375 (blair). Limit the fuse matching to the corresponding
* SoC to prevent bogus frequency setting (as improbable as it may be,
* given unexpected fuse values are.. unexpected! But still possible.)
*/
if (fuse == 0)
return 0;
if (of_machine_is_compatible("qcom,sm4350")) {
if (fuse == 138)
return 1;
else if (fuse == 92)
return 2;
} else if (of_machine_is_compatible("qcom,sm6375")) {
if (fuse == 190)
return 1;
else if (fuse == 177)
return 2;
} else
pr_warn("Unknown SoC implementing A619_holi!\n");
return UINT_MAX;
}
static u32 a619_get_speed_bin(u32 fuse)
{
if (fuse == 0)
@ -2276,6 +2304,9 @@ static u32 fuse_to_supp_hw(struct device *dev, struct adreno_gpu *adreno_gpu, u3
if (adreno_is_a618(adreno_gpu))
val = a618_get_speed_bin(fuse);
else if (adreno_is_a619_holi(adreno_gpu))
val = a619_holi_get_speed_bin(fuse);
else if (adreno_is_a619(adreno_gpu))
val = a619_get_speed_bin(fuse);