From: Alyssa Rosenzweig <alyssa.rosenzw...@collabora.com>

MediaTek MT8192 has a Mali-G57 with a special GPU ID. Add its GPU ID,
but treat it as otherwise identical to a standard Mali-G57.

We do _not_ fix up the GPU ID here -- userspace needs to be aware of the
special GPU ID, in case we find functional differences between
MediaTek's implementation and the standard Mali-G57 down the line.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzw...@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno 
<angelogioacchino.delre...@collabora.com>
Reviewed-by: Steven Price <steven.pr...@arm.com>
---
 drivers/gpu/drm/panfrost/panfrost_gpu.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c 
b/drivers/gpu/drm/panfrost/panfrost_gpu.c
index 6452e4e900dd..d28b99732dde 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gpu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c
@@ -204,6 +204,14 @@ static const struct panfrost_model gpu_models[] = {
 
        GPU_MODEL(g57, 0x9001,
                GPU_REV(g57, 0, 0)),
+
+       /* MediaTek MT8192 has a Mali-G57 with a different GPU ID from the
+        * standard. Arm's driver does not appear to handle this model.
+        * ChromeOS has a hack downstream for it. Treat it as equivalent to
+        * standard Mali-G57 for now.
+        */
+       GPU_MODEL(g57, 0x9003,
+               GPU_REV(g57, 0, 0)),
 };
 
 static void panfrost_gpu_init_features(struct panfrost_device *pfdev)
-- 
2.39.2

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