A new programming step was added to combo and TC PLL sequences. If override_AFC_startup is set in VBT, driver should overwrite AFC_startup value to 0x7 in PLL's div0 register.
The current understating is that only TGL needs this and all display 12 and newer platforms will have a older VBT or a newer VBT with override_AFC_startup set to 0 but in any case there is a drm_warn_on_once() to let us know if this is not true. BSpec: 49204 BSpec: 20122 (pending aproval, check working copies) BSpec: 49968 BSpec: 71360 Cc: Imre Deak <[email protected]> Signed-off-by: José Roberto de Souza <[email protected]> --- drivers/gpu/drm/i915/display/intel_bios.c | 4 ++ drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 38 +++++++++++++------ drivers/gpu/drm/i915/display/intel_dpll_mgr.h | 6 ++- drivers/gpu/drm/i915/display/intel_vbt_defs.h | 8 ++++ drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_reg.h | 13 +++++++ 6 files changed, 57 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index aec0efd5350ef..a4134b63f2d49 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -596,6 +596,10 @@ parse_general_features(struct drm_i915_private *i915, } else { i915->vbt.orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN; } + + if (bdb->version >= 249) + i915->vbt.override_afc_startup_bit = general->override_afc_startup_bit; + drm_dbg_kms(&i915->drm, "BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n", i915->vbt.int_tv_support, diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c index 6723c3de5a80c..a60917b926de9 100644 --- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c +++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c @@ -2748,6 +2748,9 @@ static void icl_calc_dpll_state(struct drm_i915_private *i915, pll_state->cfgcr1 |= TGL_DPLL_CFGCR1_CFSELOVRD_NORMAL_XTAL; else pll_state->cfgcr1 |= DPLL_CFGCR1_CENTRAL_FREQ_8400; + + if (i915->vbt.override_afc_startup_bit) + pll_state->div0 = TGL_DPLL0_DIV0_AFC_STARTUP(TGL_DPLL0_DIV0_AFC_STARTUP_OVERRIDE_VAL); } static bool icl_mg_pll_find_divisors(int clock_khz, bool is_dp, bool use_ssc, @@ -2949,6 +2952,8 @@ static bool icl_calc_mg_pll_state(struct intel_crtc_state *crtc_state, DKL_PLL_DIV0_PROP_COEFF(prop_coeff) | DKL_PLL_DIV0_FBPREDIV(m1div) | DKL_PLL_DIV0_FBDIV_INT(m2div_int); + if (dev_priv->vbt.override_afc_startup_bit) + pll_state->mg_pll_div0 |= DKL_PLL_DIV0_AFC_STARTUP(TGL_DPLL0_DIV0_AFC_STARTUP_OVERRIDE_VAL); pll_state->mg_pll_div1 = DKL_PLL_DIV1_IREF_TRIM(iref_trim) | DKL_PLL_DIV1_TDC_TARGET_CNT(tdc_targetcnt); @@ -3448,10 +3453,10 @@ static bool dkl_pll_get_hw_state(struct drm_i915_private *dev_priv, MG_CLKTOP2_CORECLKCTL1_A_DIVRATIO_MASK; hw_state->mg_pll_div0 = intel_de_read(dev_priv, DKL_PLL_DIV0(tc_port)); - hw_state->mg_pll_div0 &= (DKL_PLL_DIV0_INTEG_COEFF_MASK | - DKL_PLL_DIV0_PROP_COEFF_MASK | - DKL_PLL_DIV0_FBPREDIV_MASK | - DKL_PLL_DIV0_FBDIV_INT_MASK); + val = DKL_PLL_DIV0_MASK; + if (dev_priv->vbt.override_afc_startup_bit) + val |= DKL_PLL_DIV0_AFC_STARTUP_MASK; + hw_state->mg_pll_div0 &= val; hw_state->mg_pll_div1 = intel_de_read(dev_priv, DKL_PLL_DIV1(tc_port)); hw_state->mg_pll_div1 &= (DKL_PLL_DIV1_IREF_TRIM_MASK | @@ -3513,6 +3518,10 @@ static bool icl_pll_get_hw_state(struct drm_i915_private *dev_priv, TGL_DPLL_CFGCR0(id)); hw_state->cfgcr1 = intel_de_read(dev_priv, TGL_DPLL_CFGCR1(id)); + if (dev_priv->vbt.override_afc_startup_bit) { + hw_state->div0 = intel_de_read(dev_priv, TGL_DPLL0_DIV0(id)); + hw_state->div0 &= TGL_DPLL0_DIV0_AFC_STARTUP_MASK; + } } else { if (IS_JSL_EHL(dev_priv) && id == DPLL_ID_EHL_DPLL4) { hw_state->cfgcr0 = intel_de_read(dev_priv, @@ -3554,7 +3563,7 @@ static void icl_dpll_write(struct drm_i915_private *dev_priv, { struct intel_dpll_hw_state *hw_state = &pll->state.hw_state; const enum intel_dpll_id id = pll->info->id; - i915_reg_t cfgcr0_reg, cfgcr1_reg; + i915_reg_t cfgcr0_reg, cfgcr1_reg, div0_reg = INVALID_MMIO_REG; if (IS_ALDERLAKE_S(dev_priv)) { cfgcr0_reg = ADLS_DPLL_CFGCR0(id); @@ -3568,6 +3577,7 @@ static void icl_dpll_write(struct drm_i915_private *dev_priv, } else if (DISPLAY_VER(dev_priv) >= 12) { cfgcr0_reg = TGL_DPLL_CFGCR0(id); cfgcr1_reg = TGL_DPLL_CFGCR1(id); + div0_reg = TGL_DPLL0_DIV0(id); } else { if (IS_JSL_EHL(dev_priv) && id == DPLL_ID_EHL_DPLL4) { cfgcr0_reg = ICL_DPLL_CFGCR0(4); @@ -3580,6 +3590,12 @@ static void icl_dpll_write(struct drm_i915_private *dev_priv, intel_de_write(dev_priv, cfgcr0_reg, hw_state->cfgcr0); intel_de_write(dev_priv, cfgcr1_reg, hw_state->cfgcr1); + drm_WARN_ON_ONCE(&dev_priv->drm, dev_priv->vbt.override_afc_startup_bit && + !i915_mmio_reg_valid(div0_reg)); + if (dev_priv->vbt.override_afc_startup_bit && + i915_mmio_reg_valid(div0_reg)) + intel_de_rmw(dev_priv, div0_reg, TGL_DPLL0_DIV0_AFC_STARTUP_MASK, + hw_state->div0); intel_de_posting_read(dev_priv, cfgcr1_reg); } @@ -3667,13 +3683,11 @@ static void dkl_pll_write(struct drm_i915_private *dev_priv, val |= hw_state->mg_clktop2_hsclkctl; intel_de_write(dev_priv, DKL_CLKTOP2_HSCLKCTL(tc_port), val); - val = intel_de_read(dev_priv, DKL_PLL_DIV0(tc_port)); - val &= ~(DKL_PLL_DIV0_INTEG_COEFF_MASK | - DKL_PLL_DIV0_PROP_COEFF_MASK | - DKL_PLL_DIV0_FBPREDIV_MASK | - DKL_PLL_DIV0_FBDIV_INT_MASK); - val |= hw_state->mg_pll_div0; - intel_de_write(dev_priv, DKL_PLL_DIV0(tc_port), val); + val = DKL_PLL_DIV0_MASK; + if (dev_priv->vbt.override_afc_startup_bit) + val |= DKL_PLL_DIV0_AFC_STARTUP_MASK; + intel_de_rmw(dev_priv, DKL_PLL_DIV0(tc_port), val, + hw_state->mg_pll_div0); val = intel_de_read(dev_priv, DKL_PLL_DIV1(tc_port)); val &= ~(DKL_PLL_DIV1_IREF_TRIM_MASK | diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h index 91fe181462b2e..4125d7ab54438 100644 --- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.h +++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.h @@ -218,7 +218,11 @@ struct intel_dpll_hw_state { u32 mg_refclkin_ctl; u32 mg_clktop2_coreclkctl1; u32 mg_clktop2_hsclkctl; - u32 mg_pll_div0; + /* tgl+ */ + union { + u32 div0; + u32 mg_pll_div0; + }; u32 mg_pll_div1; u32 mg_pll_lf; u32 mg_pll_frac_lock; diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index a39d6cfea87aa..a813ebedcae81 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -162,6 +162,14 @@ struct bdb_general_features { u8 dp_ssc_freq:1; /* SSC freq for PCH attached eDP */ u8 dp_ssc_dongle_supported:1; u8 rsvd11:2; /* finish byte */ + + /* byte 6 */ + u8 tc_hpd_retry_timeout:7; /* 242 */ + u8 rsvd12:1; + + /* byte 7 */ + u8 override_afc_startup_bit:1;/* 249 */ + u8 rsvd13:7; } __packed; /* diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 8c1706fd81f9e..c04312a8dd520 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -532,6 +532,7 @@ struct intel_vbt_data { int lvds_ssc_freq; unsigned int bios_lvds_val; /* initial [PCH_]LVDS reg val in VBIOS */ enum drm_panel_orientation orientation; + bool override_afc_startup_bit; enum drrs_support_type drrs_type; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 87c92314ee269..d51bdc1105037 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7986,6 +7986,13 @@ enum skl_power_gate { #define RKL_DPLL_CFGCR0(pll) _MMIO_PLL(pll, _TGL_DPLL0_CFGCR0, \ _TGL_DPLL1_CFGCR0) +#define _TGL_DPLL0_DIV0 0x164B00 +#define _TGL_DPLL1_DIV0 0x164C00 +#define TGL_DPLL0_DIV0(pll) _MMIO_PLL(pll, _TGL_DPLL0_DIV0, _TGL_DPLL1_DIV0) +#define TGL_DPLL0_DIV0_AFC_STARTUP_MASK REG_GENMASK(27, 25) +#define TGL_DPLL0_DIV0_AFC_STARTUP(val) REG_FIELD_PREP(TGL_DPLL0_DIV0_AFC_STARTUP_MASK, (val)) +#define TGL_DPLL0_DIV0_AFC_STARTUP_OVERRIDE_VAL (0x7) + #define _TGL_DPLL0_CFGCR1 0x164288 #define _TGL_DPLL1_CFGCR1 0x164290 #define _TGL_TBTPLL_CFGCR1 0x1642A0 @@ -8033,6 +8040,8 @@ enum skl_power_gate { /* DEKEL PHY MMIO Address = Phy base + (internal address & ~index_mask) */ #define _DKL_PLL_DIV0 0x200 +#define DKL_PLL_DIV0_AFC_STARTUP_MASK REG_GENMASK(27, 25) +#define DKL_PLL_DIV0_AFC_STARTUP(val) REG_FIELD_PREP(DKL_PLL_DIV0_AFC_STARTUP_MASK, (val)) #define DKL_PLL_DIV0_INTEG_COEFF(x) ((x) << 16) #define DKL_PLL_DIV0_INTEG_COEFF_MASK (0x1F << 16) #define DKL_PLL_DIV0_PROP_COEFF(x) ((x) << 12) @@ -8042,6 +8051,10 @@ enum skl_power_gate { #define DKL_PLL_DIV0_FBPREDIV_MASK (0xF << DKL_PLL_DIV0_FBPREDIV_SHIFT) #define DKL_PLL_DIV0_FBDIV_INT(x) ((x) << 0) #define DKL_PLL_DIV0_FBDIV_INT_MASK (0xFF << 0) +#define DKL_PLL_DIV0_MASK (DKL_PLL_DIV0_INTEG_COEFF_MASK | \ + DKL_PLL_DIV0_PROP_COEFF_MASK | \ + DKL_PLL_DIV0_FBPREDIV_MASK | \ + DKL_PLL_DIV0_FBDIV_INT_MASK) #define DKL_PLL_DIV0(tc_port) _MMIO(_PORT(tc_port, _DKL_PHY1_BASE, \ _DKL_PHY2_BASE) + \ _DKL_PLL_DIV0) -- 2.35.1
