diff options
| author | Vandita Kulkarni <vandita.kulkarni@intel.com> | 2019-07-30 13:06:45 +0530 |
|---|---|---|
| committer | Uma Shankar <uma.shankar@intel.com> | 2019-08-08 18:37:50 +0530 |
| commit | 7b864f95886b9772cc43d2c176eb7f585569a1b2 (patch) | |
| tree | b34bbfc1b56c369d9a445479695125eeae511c8b /drivers/gpu/drm/i915/display/icl_dsi.c | |
| parent | 960e9836f7217c682ef6cf4038c7271ab401cc7d (diff) | |
drm/i915/tgl/dsi: Do not override TA_SURE
Do not override TA_SURE timing parameter to
zero for DSI 8X frequency 800MHz or below on
TGL.
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190730073648.5157-4-vandita.kulkarni@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/icl_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/icl_dsi.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c index 3185cb0bae41..c6cda529c5bb 100644 --- a/drivers/gpu/drm/i915/display/icl_dsi.c +++ b/drivers/gpu/drm/i915/display/icl_dsi.c @@ -530,18 +530,20 @@ static void gen11_dsi_setup_dphy_timings(struct intel_encoder *encoder) * a value '0' inside TA_PARAM_REGISTERS otherwise * leave all fields at HW default values. */ - if (intel_dsi_bitrate(intel_dsi) <= 800000) { - for_each_dsi_port(port, intel_dsi->ports) { - tmp = I915_READ(DPHY_TA_TIMING_PARAM(port)); - tmp &= ~TA_SURE_MASK; - tmp |= TA_SURE_OVERRIDE | TA_SURE(0); - I915_WRITE(DPHY_TA_TIMING_PARAM(port), tmp); - - /* shadow register inside display core */ - tmp = I915_READ(DSI_TA_TIMING_PARAM(port)); - tmp &= ~TA_SURE_MASK; - tmp |= TA_SURE_OVERRIDE | TA_SURE(0); - I915_WRITE(DSI_TA_TIMING_PARAM(port), tmp); + if (IS_GEN(dev_priv, 11)) { + if (intel_dsi_bitrate(intel_dsi) <= 800000) { + for_each_dsi_port(port, intel_dsi->ports) { + tmp = I915_READ(DPHY_TA_TIMING_PARAM(port)); + tmp &= ~TA_SURE_MASK; + tmp |= TA_SURE_OVERRIDE | TA_SURE(0); + I915_WRITE(DPHY_TA_TIMING_PARAM(port), tmp); + + /* shadow register inside display core */ + tmp = I915_READ(DSI_TA_TIMING_PARAM(port)); + tmp &= ~TA_SURE_MASK; + tmp |= TA_SURE_OVERRIDE | TA_SURE(0); + I915_WRITE(DSI_TA_TIMING_PARAM(port), tmp); + } } } |