diff options
| author | Vandita Kulkarni <vandita.kulkarni@intel.com> | 2019-03-25 16:56:41 +0530 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2019-04-10 09:06:29 -0700 |
| commit | 20eea462bf2fbff3a4be375cc8424a544235a432 (patch) | |
| tree | eb81062e41a44a96e8bec44f13032c4a53c71c5d /drivers/gpu/drm | |
| parent | bef42cb2029c0ec8cd8c9e0545589d81913dec4e (diff) | |
| download | linux-20eea462bf2fbff3a4be375cc8424a544235a432.tar.gz linux-20eea462bf2fbff3a4be375cc8424a544235a432.tar.bz2 linux-20eea462bf2fbff3a4be375cc8424a544235a432.zip | |
drm/i915/icl: Ungate ddi clocks before IO enable
IO enable sequencing needs ddi clocks enabled.
These clocks will be gated at a later point in
the enable sequence.
v2: Fix the commit header (Uma)
v3: Remove the redundant read (Ville)
Fixes: 949fc52af19e ("drm/i915/icl: add pll mapping for DSI")
Signed-off-by: Vandita Kulkarni <vandita.kulkarni@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1553513202-13863-1-git-send-email-vandita.kulkarni@intel.com
(cherry picked from commit c5b81a325263a891d5811aabe938c87e03db4c37)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/icl_dsi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/icl_dsi.c b/drivers/gpu/drm/i915/icl_dsi.c index 83cd8284e807..43b7b80ffa21 100644 --- a/drivers/gpu/drm/i915/icl_dsi.c +++ b/drivers/gpu/drm/i915/icl_dsi.c @@ -598,6 +598,12 @@ static void gen11_dsi_map_pll(struct intel_encoder *encoder, val |= DPCLKA_CFGCR0_DDI_CLK_SEL(pll->info->id, port); } I915_WRITE(DPCLKA_CFGCR0_ICL, val); + + for_each_dsi_port(port, intel_dsi->ports) { + val &= ~DPCLKA_CFGCR0_DDI_CLK_OFF(port); + } + I915_WRITE(DPCLKA_CFGCR0_ICL, val); + POSTING_READ(DPCLKA_CFGCR0_ICL); mutex_unlock(&dev_priv->dpll_lock); |