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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-07-27 02:18:32 +0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-07-30 02:14:37 +0400 |
| commit | f44a0120ef07cc9a1f36ab86751ec2b0598d7a2b (patch) | |
| tree | da63bafbf4bbff7d7a2154827d8c7366852c5969 /drivers/gpu/drm/radeon/si_dpm.c | |
| parent | 489bc476b4c2b3097fe9e980379bbbab260a6156 (diff) | |
| download | linux-f44a0120ef07cc9a1f36ab86751ec2b0598d7a2b.tar.xz | |
drm/radeon/dpm: fix si_calculate_memory_refresh_rate()
Update alogorithm as per internal advice.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/si_dpm.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/si_dpm.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index 6ecbb875d211..80c1f506cc0f 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 int si_force_switch_to_arb_f0(struct radeon_device *rdev) 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; |