msm: kgsl: Bypass GMU write/read buffers
Write/read buffers in GMU are not ready to use in SDM845. Disable
them to avoid potential stability issue.
CRs-Fixed: 2085877
Change-Id: I2f64323a5f75027ae2987cee51bcf42dd7597d1d
Signed-off-by: George Shen <sqiao@codeaurora.org>
diff --git a/drivers/gpu/msm/adreno_a6xx.c b/drivers/gpu/msm/adreno_a6xx.c
index c1d2407..e66431a 100644
--- a/drivers/gpu/msm/adreno_a6xx.c
+++ b/drivers/gpu/msm/adreno_a6xx.c
@@ -904,6 +904,9 @@
/* Configure registers for idle setting. The setting is cumulative */
+ /* Disable GMU WB/RB buffer */
+ kgsl_gmu_regwrite(device, A6XX_GMU_SYS_BUS_CONFIG, 0x1);
+
kgsl_gmu_regwrite(device,
A6XX_GMU_PWR_COL_INTER_FRAME_CTRL, 0x9C40400);