[Intel-gfx] [PATCH] drm/i915/dg2: UHBR tables added for pll programming
Jani Nikula
jani.nikula at intel.com
Fri Aug 27 10:38:43 UTC 2021
From: Animesh Manna <animesh.manna at intel.com>
UHBR modes has higher link rate and added new values for programming
mpll of SNPS phy. No change in sequence, only the pll parameters
are different for UHBR modes.
Signed-off-by: Animesh Manna <animesh.manna at intel.com>
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
drivers/gpu/drm/i915/display/intel_snps_phy.c | 147 ++++++++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 4 +
2 files changed, 151 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c
index 58ec2467ad66..2405f70d82de 100644
--- a/drivers/gpu/drm/i915/display/intel_snps_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c
@@ -171,11 +171,81 @@ static const struct intel_mpllb_state dg2_dp_hbr3_100 = {
REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
};
+static const struct intel_mpllb_state dg2_dp_uhbr10_100 = {
+ .clock = 1000000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 4) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 21) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 368),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+
+ /*
+ * SSC will be enabled, DP UHBR has a minimum SSC requirement.
+ */
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 58982),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 76101),
+};
+
+static const struct intel_mpllb_state dg2_dp_uhbr13_100 = {
+ .clock = 1350000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 3),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 45) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 3),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 508),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+
+ /*
+ * SSC will be enabled, DP UHBR has a minimum SSC requirement.
+ */
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 79626),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 102737),
+};
+
static const struct intel_mpllb_state * const dg2_dp_100_tables[] = {
&dg2_dp_rbr_100,
&dg2_dp_hbr1_100,
&dg2_dp_hbr2_100,
&dg2_dp_hbr3_100,
+ &dg2_dp_uhbr10_100,
+ &dg2_dp_uhbr13_100,
NULL,
};
@@ -284,11 +354,88 @@ static const struct intel_mpllb_state dg2_dp_hbr3_38_4 = {
REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 61440),
};
+static const struct intel_mpllb_state dg2_dp_uhbr10_38_4 = {
+ .clock = 1000000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 1),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 5) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 26) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 488),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 3),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, 2) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 27306),
+
+ /*
+ * SSC will be enabled, DP UHBR has a minimum SSC requirement.
+ */
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 76800),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 129024),
+};
+
+static const struct intel_mpllb_state dg2_dp_uhbr13_38_4 = {
+ .clock = 1350000,
+ .ref_control =
+ REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, 1),
+ .mpllb_cp =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, 6) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, 56) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, 65) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, 127),
+ .mpllb_div =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_CLK_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV_MULTIPLIER, 8) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_WORD_DIV2_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_DP2_MODE, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 3),
+ .mpllb_div2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 670),
+ .mpllb_fracn1 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, 1),
+ .mpllb_fracn2 =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, 36864),
+
+ /*
+ * SSC will be enabled, DP UHBR has a minimum SSC requirement.
+ */
+ .mpllb_sscen =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_EN, 1) |
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_PEAK, 103680),
+ .mpllb_sscstep =
+ REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_STEPSIZE, 174182),
+};
+
static const struct intel_mpllb_state * const dg2_dp_38_4_tables[] = {
&dg2_dp_rbr_38_4,
&dg2_dp_hbr1_38_4,
&dg2_dp_hbr2_38_4,
&dg2_dp_hbr3_38_4,
+ &dg2_dp_uhbr10_38_4,
+ &dg2_dp_uhbr13_38_4,
NULL,
};
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 8d4cf1e203ab..40943dd5e0db 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2237,10 +2237,14 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
#define SNPS_PHY_MPLLB_DIV(phy) _MMIO_SNPS(phy, 0x168004)
#define SNPS_PHY_MPLLB_FORCE_EN REG_BIT(31)
+#define SNPS_PHY_MPLLB_DIV_CLK_EN REG_BIT(30)
#define SNPS_PHY_MPLLB_DIV5_CLK_EN REG_BIT(29)
#define SNPS_PHY_MPLLB_V2I REG_GENMASK(27, 26)
#define SNPS_PHY_MPLLB_FREQ_VCO REG_GENMASK(25, 24)
+#define SNPS_PHY_MPLLB_DIV_MULTIPLIER REG_GENMASK(23, 16)
#define SNPS_PHY_MPLLB_PMIX_EN REG_BIT(10)
+#define SNPS_PHY_MPLLB_DP2_MODE REG_BIT(9)
+#define SNPS_PHY_MPLLB_WORD_DIV2_EN REG_BIT(8)
#define SNPS_PHY_MPLLB_TX_CLK_DIV REG_GENMASK(7, 5)
#define SNPS_PHY_MPLLB_FRACN1(phy) _MMIO_SNPS(phy, 0x168008)
--
2.20.1
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