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[83.9.29.16]) by smtp.gmail.com with ESMTPSA id 27-20020a2e165b000000b002986a977bf2sm491529ljw.90.2023.03.14.08.28.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Mar 2023 08:28:59 -0700 (PDT) From: Konrad Dybcio Date: Tue, 14 Mar 2023 16:28:44 +0100 Subject: [PATCH v4 13/14] drm/msm/a6xx: Add A619_holi speedbin support MIME-Version: 1.0 Message-Id: <20230223-topic-gmuwrapper-v4-13-e987eb79d03f@linaro.org> References: <20230223-topic-gmuwrapper-v4-0-e987eb79d03f@linaro.org> In-Reply-To: <20230223-topic-gmuwrapper-v4-0-e987eb79d03f@linaro.org> To: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Bjorn Andersson , Konrad Dybcio , Akhil P Oommen Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Clark , Marijn Suijten , Konrad Dybcio X-Mailer: b4 0.12.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1678807716; l=1972; i=konrad.dybcio@linaro.org; s=20230215; h=from:subject:message-id; bh=YbHID1ebzUgv4FADFLbdTcRo/0BAqs1RT5mt5WqUfTo=; b=s3HhnOhKViZbWBYgyMxuzL4UDJa8iVASyV+mQYW3iO3PGPZl+eP/2Aeaw6ZMhwFz3SwSFoCG0y33 Q/Rx0heHCR/EvUr6sEUzL8fuAOHOSGF3DRC9eEc/4mROb2FGKAb7 X-Developer-Key: i=konrad.dybcio@linaro.org; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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. Signed-off-by: Konrad Dybcio --- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c index 71950a5fcc96..27b96a335039 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -2148,6 +2148,34 @@ 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) @@ -2207,6 +2235,9 @@ 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);