[Intel-gfx] [PATCH 1/2] drm/i915/dg2: Drop 38.4 MHz MPLLB tables
Lucas De Marchi
lucas.demarchi at intel.com
Fri Feb 18 09:54:37 UTC 2022
From: Matt Roper <matthew.d.roper at intel.com>
Our early understanding of DG2 was incorrect; since the 5th display
isn't actually a Type-C output, 38.4 MHz input clocks are never used on
this platform and we can drop the corresponding MPLLB tables.
Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
Cc: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi at intel.com>
Reviewed-by: Uma Shankar <uma.shankar at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
drivers/gpu/drm/i915/display/intel_snps_phy.c | 208 +-----------------
1 file changed, 1 insertion(+), 207 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_snps_phy.c b/drivers/gpu/drm/i915/display/intel_snps_phy.c
index 8fd00de981fc..0989f5d57aa3 100644
--- a/drivers/gpu/drm/i915/display/intel_snps_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_snps_phy.c
@@ -250,197 +250,6 @@ static const struct intel_mpllb_state * const dg2_dp_100_tables[] = {
NULL,
};
-/*
- * Basic DP link rates with 38.4 MHz reference clock.
- */
-
-static const struct intel_mpllb_state dg2_dp_rbr_38_4 = {
- .clock = 162000,
- .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, 25) |
- 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_TX_CLK_DIV, 2) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 2),
- .mpllb_div2 =
- REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 304),
- .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, 49152),
-};
-
-static const struct intel_mpllb_state dg2_dp_hbr1_38_4 = {
- .clock = 270000,
- .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, 25) |
- 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_TX_CLK_DIV, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
- .mpllb_div2 =
- REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 248),
- .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, 40960),
-};
-
-static const struct intel_mpllb_state dg2_dp_hbr2_38_4 = {
- .clock = 540000,
- .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, 25) |
- 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_PMIX_EN, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, 2) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, 3),
- .mpllb_div2 =
- REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, 1) |
- REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, 248),
- .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, 40960),
-};
-
-static const struct intel_mpllb_state dg2_dp_hbr3_38_4 = {
- .clock = 810000,
- .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, 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_PMIX_EN, 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, 388),
- .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, 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_SHIM_DIV32_CLK_SEL, 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,
-};
-
/*
* eDP link rates with 100 MHz reference clock.
*/
@@ -749,22 +558,7 @@ intel_mpllb_tables_get(struct intel_crtc_state *crtc_state,
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_EDP)) {
return dg2_edp_tables;
} else if (intel_crtc_has_dp_encoder(crtc_state)) {
- /*
- * FIXME: Initially we're just enabling the "combo" outputs on
- * port A-D. The MPLLB for those ports takes an input from the
- * "Display Filter PLL" which always has an output frequency
- * of 100 MHz, hence the use of the _100 tables below.
- *
- * Once we enable port TC1 it will either use the same 100 MHz
- * "Display Filter PLL" (when strapped to support a native
- * display connection) or different 38.4 MHz "Filter PLL" when
- * strapped to support a USB connection, so we'll need to check
- * that to determine which table to use.
- */
- if (0)
- return dg2_dp_38_4_tables;
- else
- return dg2_dp_100_tables;
+ return dg2_dp_100_tables;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
return dg2_hdmi_tables;
}
--
2.35.1
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