[Intel-gfx] [PATCH v3 21/21] drm/i915/tgl: Update DPLL clock reference register

[Lucas De Marchi]

From: José Roberto de Souza <jose.souza at intel.com>

This register definition changed from ICL and has now another meaning.
Use the right bits on TGL.

Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dpll_mgr.c | 8 ++++++--
 drivers/gpu/drm/i915/i915_reg.h               | 1 +
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index 9baa6adc63db..aafe25e6319a 100644
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -2602,8 +2602,12 @@ static bool icl_calc_dpll_state(struct intel_crtc_state *crtc_state,
 	cfgcr1 = DPLL_CFGCR1_QDIV_RATIO(pll_params.qdiv_ratio) |
 		 DPLL_CFGCR1_QDIV_MODE(pll_params.qdiv_mode) |
 		 DPLL_CFGCR1_KDIV(pll_params.kdiv) |
-		 DPLL_CFGCR1_PDIV(pll_params.pdiv) |
-		 DPLL_CFGCR1_CENTRAL_FREQ_8400;
+		 DPLL_CFGCR1_PDIV(pll_params.pdiv);
+
+	if (INTEL_GEN(dev_priv) >= 12)
+		cfgcr1 |= TGL_DPLL_CFGCR1_CFSELOVRD_NORMAL_XTAL;
+	else
+		cfgcr1 |= DPLL_CFGCR1_CENTRAL_FREQ_8400;
 
 	memset(pll_state, 0, sizeof(*pll_state));
 
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c8277862bbbe..3ff659a180e6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9944,6 +9944,7 @@ enum skl_power_gate {
 #define  DPLL_CFGCR1_PDIV_7		(8 << 2)
 #define  DPLL_CFGCR1_CENTRAL_FREQ	(3 << 0)
 #define  DPLL_CFGCR1_CENTRAL_FREQ_8400	(3 << 0)
+#define  TGL_DPLL_CFGCR1_CFSELOVRD_NORMAL_XTAL	(0 << 0)
 #define CNL_DPLL_CFGCR1(pll)		_MMIO_PLL(pll, _CNL_DPLL0_CFGCR1, _CNL_DPLL1_CFGCR1)
 
 #define _ICL_DPLL0_CFGCR0		0x164000
-- 
2.21.0