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drm/i915/tgl/dsi: Gate the ddi clocks after pll mapping

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For TGL, there is no need to keep DDI clock on till IO enabling
for mipi dsi.

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/20190730073648.5157-5-vandita.kulkarni@intel.com
This commit is contained in:
Vandita Kulkarni 2019-07-30 13:06:46 +05:30 committed by Uma Shankar
parent 7b864f9588
commit 991d9557b0
1 changed files with 8 additions and 2 deletions
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10
drivers/gpu/drm/i915/display/icl_dsi.c
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@ -607,7 +607,10 @@ static void gen11_dsi_map_pll(struct intel_encoder *encoder,
I915_WRITE(ICL_DPCLKA_CFGCR0, val); I915_WRITE(ICL_DPCLKA_CFGCR0, val);
for_each_dsi_phy(phy, intel_dsi->phys) { for_each_dsi_phy(phy, intel_dsi->phys) {
val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy); if (INTEL_GEN(dev_priv) >= 12)
val |= ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
else
val &= ~ICL_DPCLKA_CFGCR0_DDI_CLK_OFF(phy);
} }
I915_WRITE(ICL_DPCLKA_CFGCR0, val); I915_WRITE(ICL_DPCLKA_CFGCR0, val);
@ -951,6 +954,8 @@ static void
gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder, gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config) const struct intel_crtc_state *pipe_config)
{ {
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
/* step 4a: power up all lanes of the DDI used by DSI */ /* step 4a: power up all lanes of the DDI used by DSI */
gen11_dsi_power_up_lanes(encoder); gen11_dsi_power_up_lanes(encoder);
@ -973,7 +978,8 @@ gen11_dsi_enable_port_and_phy(struct intel_encoder *encoder,
gen11_dsi_configure_transcoder(encoder, pipe_config); gen11_dsi_configure_transcoder(encoder, pipe_config);
/* Step 4l: Gate DDI clocks */ /* Step 4l: Gate DDI clocks */
gen11_dsi_gate_clocks(encoder); if (IS_GEN(dev_priv, 11))
gen11_dsi_gate_clocks(encoder);
} }
static void gen11_dsi_powerup_panel(struct intel_encoder *encoder) static void gen11_dsi_powerup_panel(struct intel_encoder *encoder)