From b7afe7b807c5218d049d780e3fe0557ba748632b Mon Sep 17 00:00:00 2001
From: Animesh Manna <animesh.manna@intel.com>
Date: Fri, 27 Aug 2021 13:38:43 +0300
Subject: drm/i915/dg2: UHBR tables added for pll programming
Git-commit: 45cbbe50ccb10452c9369c2e58f0fdee90abae0b
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
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
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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 3b3bfa14df8e..c10e49c4315f 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)
--
2.38.1