[PATCH 1/2] drm/msm/adreno: allow headless setup on SM8150 MTP

[Krzysztof Kozlowski]

Commit f30ac26def18 ("arm64: dts: qcom: add sm8150 GPU nodes") re-used
amd,imageon compatible for the SM8150 just to enable headless mode due
to missing display controller nodes.  This work-around was later
narrowed to the SM8150 MTP board in commit 1642ab96efa4 ("arm64: dts:
qcom: sm8150: Don't start Adreno in headless mode").

This was not a correct solution, because the Qualcomm SM8150 SoC does
not have an AMD GPU and the SM8150 MTP board does not have magically
different GPU than SM8150 SoC.

Rely on board compatible to achieve the same in a Devicetree-correct
way.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index c3703a51287b..a8afe0b6429b 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -838,7 +838,8 @@ static int adreno_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (of_device_is_compatible(pdev->dev.of_node, "amd,imageon"))
+	if (of_device_is_compatible(pdev->dev.of_node, "amd,imageon") ||
+	    of_machine_is_compatible("qcom,sm8150-mtp"))
 		adreno_device_register_headless();
 
 	return 0;
-- 
2.43.0