diff options
| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2019-07-11 10:31:10 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2019-07-11 16:31:20 -0700 |
| commit | 30fcc338bc66f930dc7f692205474edb7ca6a607 (patch) | |
| tree | 17dc4af2867c32f17e87ae5683d8c6cb794d29cf /drivers/gpu/drm/i915/display | |
| parent | deea06b47574de81da72a2d2fa1ace4e119ca02a (diff) | |
drm/i915/gen12: MBUS B credit change
Previously, the recommended B credit for all platforms was 24 / number
of pipes, which would give 6 for newer platforms with 4 pipes. However 6
is not enough and we need 12 on these cases.
We also need a different BW credit for these platforms.
Cc: Arthur J Runyan <arthur.j.runyan@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190711173115.28296-17-lucas.demarchi@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 0a15c0868a0c..79ae8f4e5213 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -6423,8 +6423,14 @@ static void icl_pipe_mbus_enable(struct intel_crtc *crtc) u32 val; val = MBUS_DBOX_A_CREDIT(2); - val |= MBUS_DBOX_BW_CREDIT(1); - val |= MBUS_DBOX_B_CREDIT(8); + + if (INTEL_GEN(dev_priv) >= 12) { + val |= MBUS_DBOX_BW_CREDIT(2); + val |= MBUS_DBOX_B_CREDIT(12); + } else { + val |= MBUS_DBOX_BW_CREDIT(1); + val |= MBUS_DBOX_B_CREDIT(8); + } I915_WRITE(PIPE_MBUS_DBOX_CTL(pipe), val); } |