[PATCH 6/7] drm/msm/a5xx: Disable flat shading optimization

[kholk11]

From: Konrad Dybcio <konradybcio@xxxxxxxxx>

Port over the command from downstream to prevent undefined
behaviour.

Signed-off-by: Konrad Dybcio <konradybcio@xxxxxxxxx>
Signed-off-by: AngeloGioacchino Del Regno <kholk11@xxxxxxxxx>
---
 drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
index b2670af638a3..bdc852e7d979 100644
--- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c
@@ -759,6 +759,9 @@ static int a5xx_hw_init(struct msm_gpu *gpu)
 	    adreno_is_a540(adreno_gpu))
 		gpu_write(gpu, REG_A5XX_UCHE_DBG_ECO_CNTL_2, bit);
 
+	/* Disable All flat shading optimization */
+	gpu_rmw(gpu, 0x00000E60, 0, 0x1 << 10);
+
 	/* Protect registers from the CP */
 	gpu_write(gpu, REG_A5XX_CP_PROTECT_CNTL, 0x00000007);
 
-- 
2.28.0