From 45cbbe50ccb10452c9369c2e58f0fdee90abae0b Mon Sep 17 00:00:00 2001
From: Animesh Manna <animesh.manna@intel.com>
Date: Fri, 27 Aug 2021 13:38:43 +0300
Subject: [PATCH] drm/i915/dg2: UHBR tables added for pll programming
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.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210827103843.527-1-jani.nikula@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 58ec2467ad661..2405f70d82ded 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 d5177c7655b3d..26c9825e0b89b 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)
--
2.30.2