Use the hardcoded tables provided by our spec.
Signed-off-by: Paulo Zanoni <[email protected]>
---
drivers/gpu/drm/i915/intel_dpll_mgr.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c
b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index 72f15e727d07..8a34733de1ea 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -2452,6 +2452,16 @@ static const struct skl_wrpll_params
icl_dp_combo_pll_19_2MHz_values[] = {
.pdiv = 0x1 /* 2 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0},
};
+static const struct skl_wrpll_params icl_tbt_pll_24MHz_values = {
+ .dco_integer = 0x151, .dco_fraction = 0x4000,
+ .pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
+static const struct skl_wrpll_params icl_tbt_pll_19_2MHz_values = {
+ .dco_integer = 0x1A5, .dco_fraction = 0x7000,
+ .pdiv = 0x4 /* 5 */, .kdiv = 1, .qdiv_mode = 0, .qdiv_ratio = 0,
+};
+
static bool icl_calc_dp_combo_pll(struct drm_i915_private *dev_priv, int clock,
struct skl_wrpll_params *pll_params)
{
@@ -2494,6 +2504,14 @@ static bool icl_calc_dp_combo_pll(struct
drm_i915_private *dev_priv, int clock,
return true;
}
+static bool icl_calc_tbt_pll(struct drm_i915_private *dev_priv, int clock,
+ struct skl_wrpll_params *pll_params)
+{
+ *pll_params = dev_priv->cdclk.hw.ref == 24000 ?
+ icl_tbt_pll_24MHz_values : icl_tbt_pll_19_2MHz_values;
+ return true;
+}
+
static bool icl_calc_dpll_state(struct intel_crtc_state *crtc_state,
struct intel_encoder *encoder, int clock,
struct intel_dpll_hw_state *pll_state)
@@ -2501,9 +2519,12 @@ static bool icl_calc_dpll_state(struct intel_crtc_state
*crtc_state,
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
uint32_t cfgcr0, cfgcr1;
struct skl_wrpll_params pll_params = { 0 };
+ bool is_tbt = encoder->port >= PORT_C;
bool ret;
- if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
+ if (is_tbt)
+ ret = icl_calc_tbt_pll(dev_priv, clock, &pll_params);
+ else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
ret = cnl_ddi_calculate_wrpll(clock, dev_priv, &pll_params);
else
ret = icl_calc_dp_combo_pll(dev_priv, clock, &pll_params);
@@ -2513,6 +2534,8 @@ static bool icl_calc_dpll_state(struct intel_crtc_state
*crtc_state,
cfgcr0 = DPLL_CFGCR0_DCO_FRACTION(pll_params.dco_fraction) |
pll_params.dco_integer;
+ if (is_tbt)
+ cfgcr0 |= DPLL_CFGCR0_SSC_ENABLE_ICL;
cfgcr1 = DPLL_CFGCR1_QDIV_RATIO(pll_params.qdiv_ratio) |
DPLL_CFGCR1_QDIV_MODE(pll_params.qdiv_mode) |
--
2.14.3
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