diff options
| author | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2022-11-17 13:30:15 -0800 |
|---|---|---|
| committer | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2022-11-18 10:01:37 -0800 |
| commit | 244c679b4b8c45b7ecba873ae1c83482665eaac8 (patch) | |
| tree | d5d504adb8d209f35f243b4714f8b94808b816f7 | |
| parent | ec35c41d91052a3a15dd3767075620af448b8030 (diff) | |
| download | linux-244c679b4b8c45b7ecba873ae1c83482665eaac8.tar.gz | |
drm/i915/mtl: Skip doubling channel numbers for LPDDR4/LPDDDR5
MTL LPDDR5 reported 16b with 8 channels. Previous platforms
reported 32b with 4 channels and hence needed a multiplication
by a factor of 2. Skip increasing the channels for MTL.
v2: Use version check instead of platform check(MattR)
Bspec: 64631
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221117213015.584417-2-radhakrishna.sripada@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bw.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index 4ace026b29bd..1c236f02b380 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -439,7 +439,8 @@ static int tgl_get_bw_info(struct drm_i915_private *dev_priv, const struct intel return ret; } - if (dram_info->type == INTEL_DRAM_LPDDR4 || dram_info->type == INTEL_DRAM_LPDDR5) + if (DISPLAY_VER(dev_priv) < 14 && + (dram_info->type == INTEL_DRAM_LPDDR4 || dram_info->type == INTEL_DRAM_LPDDR5)) num_channels *= 2; qi.deinterleave = qi.deinterleave ? : DIV_ROUND_UP(num_channels, is_y_tile ? 4 : 2); |