DG2 has no shared DPLL's or DDI clock muxing. The Port PLL is embedded within the PHY.
Bspec: 54032 Bspec: 54034 Cc: Lucas De Marchi lucas.demarchi@intel.com Cc: Mohammed Khajapasha mohammed.khajapasha@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com --- drivers/gpu/drm/i915/display/intel_display.c | 10 +++++++--- drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 5 ++++- 2 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 026c28c612f0..c673d0c8fb4a 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -3474,7 +3474,8 @@ static void icl_ddi_bigjoiner_pre_enable(struct intel_atomic_state *state, * Enable sequence steps 1-7 on bigjoiner master */ intel_encoders_pre_pll_enable(state, master); - intel_enable_shared_dpll(master_crtc_state); + if (master_crtc_state->shared_dpll) + intel_enable_shared_dpll(master_crtc_state); intel_encoders_pre_enable(state, master);
/* and DSC on slave */ @@ -8633,10 +8634,11 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
PIPE_CONF_CHECK_BOOL(double_wide);
- PIPE_CONF_CHECK_P(shared_dpll); + if (dev_priv->dpll.mgr) + PIPE_CONF_CHECK_P(shared_dpll);
/* FIXME do the readout properly and get rid of this quirk */ - if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_BIGJOINER_SLAVE)) { + if (dev_priv->dpll.mgr && !PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_BIGJOINER_SLAVE)) { PIPE_CONF_CHECK_X(dpll_hw_state.dpll); PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md); PIPE_CONF_CHECK_X(dpll_hw_state.fp0); @@ -8668,7 +8670,9 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config, PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_ssc); PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_bias); PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_tdc_coldst_bias); + }
+ if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_BIGJOINER_SLAVE)) { PIPE_CONF_CHECK_X(dsi_pll.ctrl); PIPE_CONF_CHECK_X(dsi_pll.div);
diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c index 882bfd499e55..5688d9704636 100644 --- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c +++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c @@ -4462,7 +4462,10 @@ void intel_shared_dpll_init(struct drm_device *dev) const struct dpll_info *dpll_info; int i;
- if (IS_ALDERLAKE_P(dev_priv)) + if (IS_DG2(dev_priv)) + /* No shared DPLLs on DG2; port PLLs are part of the PHY */ + dpll_mgr = NULL; + else if (IS_ALDERLAKE_P(dev_priv)) dpll_mgr = &adlp_pll_mgr; else if (IS_ALDERLAKE_S(dev_priv)) dpll_mgr = &adls_pll_mgr;