drm/radeon/dpm: fix si_calculate_memory_refresh_rate()
Update alogorithm as per internal advice.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 6ecbb87..80c1f50 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -37,8 +37,6 @@
#define SMC_RAM_END 0x20000
-#define DDR3_DRAM_ROWS 0x2000
-
#define SCLK_MIN_DEEPSLEEP_FREQ 1350
static const struct si_cac_config_reg cac_weights_tahiti[] =
@@ -4040,16 +4038,15 @@
static u32 si_calculate_memory_refresh_rate(struct radeon_device *rdev,
u32 engine_clock)
{
- struct rv7xx_power_info *pi = rv770_get_pi(rdev);
u32 dram_rows;
u32 dram_refresh_rate;
u32 mc_arb_rfsh_rate;
u32 tmp = (RREG32(MC_ARB_RAMCFG) & NOOFROWS_MASK) >> NOOFROWS_SHIFT;
- if (pi->mem_gddr5)
- dram_rows = 1 << (tmp + 10);
+ if (tmp >= 4)
+ dram_rows = 16384;
else
- dram_rows = DDR3_DRAM_ROWS;
+ dram_rows = 1 << (tmp + 10);
dram_refresh_rate = 1 << ((RREG32(MC_SEQ_MISC0) & 0x3) + 3);
mc_arb_rfsh_rate = ((engine_clock * 10) * dram_refresh_rate / dram_rows - 32) / 64;