msm: kgsl: Tune some clock control values
Set some clock control hystersis values to get a better
idea of when the SP and CP blocks are really idle.
Change-Id: Ic0dedbad5a2e915de99c2d2c5887aaba0edb6524
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
diff --git a/drivers/gpu/msm/a3xx_reg.h b/drivers/gpu/msm/a3xx_reg.h
index 4f5c783..fdf7304 100644
--- a/drivers/gpu/msm/a3xx_reg.h
+++ b/drivers/gpu/msm/a3xx_reg.h
@@ -46,6 +46,7 @@
#define A3XX_RBBM_HW_VERSION 0x000
#define A3XX_RBBM_HW_RELEASE 0x001
#define A3XX_RBBM_HW_CONFIGURATION 0x002
+#define A3XX_RBBM_SP_HYST_CNT 0x012
#define A3XX_RBBM_SW_RESET_CMD 0x018
#define A3XX_RBBM_AHB_CTL0 0x020
#define A3XX_RBBM_AHB_CTL1 0x021
@@ -54,6 +55,7 @@
#define A3XX_RBBM_GPR0_CTL 0x02E
/* This the same register as on A2XX, just in a different place */
#define A3XX_RBBM_STATUS 0x030
+#define A3XX_RBBM_WAIT_IDLE_CLOCKS_CTL 0x33
#define A3XX_RBBM_INTERFACE_HANG_INT_CTL 0x50
#define A3XX_RBBM_INTERFACE_HANG_MASK_CTL0 0x51
#define A3XX_RBBM_INTERFACE_HANG_MASK_CTL1 0x54
diff --git a/drivers/gpu/msm/adreno_a3xx.c b/drivers/gpu/msm/adreno_a3xx.c
index c01e676..2761b60 100644
--- a/drivers/gpu/msm/adreno_a3xx.c
+++ b/drivers/gpu/msm/adreno_a3xx.c
@@ -2576,6 +2576,10 @@
/* Make all blocks contribute to the GPU BUSY perf counter */
adreno_regwrite(device, A3XX_RBBM_GPU_BUSY_MASKED, 0xFFFFFFFF);
+ /* Tune the hystersis counters for SP and CP idle detection */
+ adreno_regwrite(device, A3XX_RBBM_SP_HYST_CNT, 0x10);
+ adreno_regwrite(device, A3XX_RBBM_WAIT_IDLE_CLOCKS_CTL, 0x10);
+
/* Enable the RBBM error reporting bits. This lets us get
useful information on failure */