365 lines
13 KiB
C
365 lines
13 KiB
C
// SPDX-License-Identifier: MIT
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/*
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* Copyright © 2025 Synopsys, Inc., Intel Corporation
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*/
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#include <linux/math.h>
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#include "intel_cx0_phy_regs.h"
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#include "intel_display_types.h"
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#include "intel_snps_phy.h"
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#include "intel_snps_phy_regs.h"
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#include "intel_snps_hdmi_pll.h"
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#define INTEL_SNPS_PHY_HDMI_4999MHZ 4999999900ULL
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#define INTEL_SNPS_PHY_HDMI_16GHZ 16000000000ULL
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#define INTEL_SNPS_PHY_HDMI_9999MHZ (2 * INTEL_SNPS_PHY_HDMI_4999MHZ)
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#define CURVE0_MULTIPLIER 1000000000
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#define CURVE1_MULTIPLIER 100
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#define CURVE2_MULTIPLIER 1000000000000ULL
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struct pll_output_params {
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u32 ssc_up_spread;
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u32 mpll_div5_en;
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u32 hdmi_div;
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u32 ana_cp_int;
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u32 ana_cp_prop;
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u32 refclk_postscalar;
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u32 tx_clk_div;
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u32 fracn_quot;
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u32 fracn_rem;
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u32 fracn_den;
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u32 fracn_en;
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u32 pmix_en;
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u32 multiplier;
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int mpll_ana_v2i;
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int ana_freq_vco;
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};
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static s64 interp(s64 x, s64 x1, s64 x2, s64 y1, s64 y2)
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{
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s64 dydx;
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dydx = DIV64_U64_ROUND_UP((y2 - y1) * 100000, (x2 - x1));
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return (y1 + DIV64_U64_ROUND_UP(dydx * (x - x1), 100000));
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}
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static void get_ana_cp_int_prop(u64 vco_clk,
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u32 refclk_postscalar,
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int mpll_ana_v2i,
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int c, int a,
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const u64 curve_freq_hz[2][8],
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const u64 curve_0[2][8],
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const u64 curve_1[2][8],
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const u64 curve_2[2][8],
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u32 *ana_cp_int,
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u32 *ana_cp_prop)
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{
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u64 vco_div_refclk_float;
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u64 curve_0_interpolated;
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u64 curve_2_interpolated;
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u64 curve_1_interpolated;
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u64 curve_2_scaled1;
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u64 curve_2_scaled2;
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u64 adjusted_vco_clk1;
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u64 adjusted_vco_clk2;
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u64 curve_2_scaled_int;
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u64 interpolated_product;
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u64 scaled_interpolated_sqrt;
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u64 scaled_vco_div_refclk1;
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u64 scaled_vco_div_refclk2;
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u64 ana_cp_int_temp;
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u64 temp;
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vco_div_refclk_float = vco_clk * DIV_ROUND_DOWN_ULL(1000000000000ULL, refclk_postscalar);
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/* Interpolate curve values at the target vco_clk frequency */
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curve_0_interpolated = interp(vco_clk, curve_freq_hz[c][a], curve_freq_hz[c][a + 1],
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curve_0[c][a], curve_0[c][a + 1]);
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curve_2_interpolated = interp(vco_clk, curve_freq_hz[c][a], curve_freq_hz[c][a + 1],
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curve_2[c][a], curve_2[c][a + 1]);
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curve_1_interpolated = interp(vco_clk, curve_freq_hz[c][a], curve_freq_hz[c][a + 1],
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curve_1[c][a], curve_1[c][a + 1]);
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curve_1_interpolated = DIV_ROUND_DOWN_ULL(curve_1_interpolated, CURVE1_MULTIPLIER);
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/*
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* Scale curve_2_interpolated based on mpll_ana_v2i, for integer part
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* ana_cp_int and for the proportional part ana_cp_prop
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*/
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temp = curve_2_interpolated * (4 - mpll_ana_v2i);
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curve_2_scaled1 = DIV_ROUND_DOWN_ULL(temp, 16000);
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curve_2_scaled2 = DIV_ROUND_DOWN_ULL(temp, 160);
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/* Scale vco_div_refclk for ana_cp_int */
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scaled_vco_div_refclk1 = 112008301 * DIV_ROUND_DOWN_ULL(vco_div_refclk_float, 100000);
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adjusted_vco_clk1 = CURVE2_MULTIPLIER *
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DIV_ROUND_DOWN_ULL(scaled_vco_div_refclk1, (curve_0_interpolated *
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DIV_ROUND_DOWN_ULL(curve_1_interpolated, CURVE0_MULTIPLIER)));
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ana_cp_int_temp =
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DIV64_U64_ROUND_CLOSEST(DIV_ROUND_DOWN_ULL(adjusted_vco_clk1, curve_2_scaled1),
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CURVE2_MULTIPLIER);
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*ana_cp_int = max(1, min(ana_cp_int_temp, 127));
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curve_2_scaled_int = curve_2_scaled1 * (*ana_cp_int);
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interpolated_product = curve_1_interpolated *
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(curve_2_scaled_int * DIV_ROUND_DOWN_ULL(curve_0_interpolated,
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CURVE0_MULTIPLIER));
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scaled_interpolated_sqrt =
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int_sqrt(DIV64_U64_ROUND_UP(interpolated_product, vco_div_refclk_float) *
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DIV_ROUND_DOWN_ULL(1000000000000ULL, 55));
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/* Scale vco_div_refclk for ana_cp_int */
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scaled_vco_div_refclk2 = DIV_ROUND_UP_ULL(vco_div_refclk_float, 1000000);
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adjusted_vco_clk2 = 1460281 * DIV64_U64_ROUND_UP(scaled_interpolated_sqrt *
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scaled_vco_div_refclk2,
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curve_1_interpolated);
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*ana_cp_prop = DIV64_U64_ROUND_UP(adjusted_vco_clk2, curve_2_scaled2);
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*ana_cp_prop = max(1, min(*ana_cp_prop, 127));
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}
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static void compute_hdmi_tmds_pll(u64 pixel_clock, u32 refclk,
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u32 ref_range,
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u32 ana_cp_int_gs,
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u32 ana_cp_prop_gs,
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const u64 curve_freq_hz[2][8],
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const u64 curve_0[2][8],
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const u64 curve_1[2][8],
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const u64 curve_2[2][8],
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u32 prescaler_divider,
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struct pll_output_params *pll_params)
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{
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u64 datarate = pixel_clock * 10000;
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u32 ssc_up_spread = 1;
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u32 mpll_div5_en = 1;
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u32 hdmi_div = 1;
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u32 ana_cp_int;
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u32 ana_cp_prop;
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u32 refclk_postscalar = refclk >> prescaler_divider;
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u32 tx_clk_div;
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u64 vco_clk;
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u64 vco_clk_do_div;
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u32 vco_div_refclk_integer;
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u32 vco_div_refclk_fracn;
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u32 fracn_quot;
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u32 fracn_rem;
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u32 fracn_den;
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u32 fracn_en;
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u32 pmix_en;
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u32 multiplier;
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int mpll_ana_v2i;
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int ana_freq_vco = 0;
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int c, a = 0;
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int i;
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/* Select appropriate v2i point */
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if (datarate <= INTEL_SNPS_PHY_HDMI_9999MHZ) {
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mpll_ana_v2i = 2;
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tx_clk_div = ilog2(div64_u64(INTEL_SNPS_PHY_HDMI_9999MHZ, datarate));
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} else {
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mpll_ana_v2i = 3;
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tx_clk_div = ilog2(div64_u64(INTEL_SNPS_PHY_HDMI_16GHZ, datarate));
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}
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vco_clk = (datarate << tx_clk_div) >> 1;
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vco_div_refclk_integer = DIV_ROUND_DOWN_ULL(vco_clk, refclk_postscalar);
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vco_clk_do_div = do_div(vco_clk, refclk_postscalar);
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vco_div_refclk_fracn = DIV_ROUND_DOWN_ULL(vco_clk_do_div << 32, refclk_postscalar);
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fracn_quot = vco_div_refclk_fracn >> 16;
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fracn_rem = vco_div_refclk_fracn & 0xffff;
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fracn_rem = fracn_rem - (fracn_rem >> 15);
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fracn_den = 0xffff;
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fracn_en = (fracn_quot != 0 || fracn_rem != 0) ? 1 : 0;
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pmix_en = fracn_en;
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multiplier = (vco_div_refclk_integer - 16) * 2;
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/* Curve selection for ana_cp_* calculations. One curve hardcoded per v2i range */
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c = mpll_ana_v2i - 2;
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/* Find the right segment of the table */
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for (i = 0; i < 8; i += 2) {
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if (vco_clk <= curve_freq_hz[c][i + 1]) {
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a = i;
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ana_freq_vco = 3 - (a >> 1);
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break;
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}
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}
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get_ana_cp_int_prop(vco_clk, refclk_postscalar, mpll_ana_v2i, c, a,
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curve_freq_hz, curve_0, curve_1, curve_2,
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&ana_cp_int, &ana_cp_prop);
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pll_params->ssc_up_spread = ssc_up_spread;
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pll_params->mpll_div5_en = mpll_div5_en;
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pll_params->hdmi_div = hdmi_div;
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pll_params->ana_cp_int = ana_cp_int;
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pll_params->refclk_postscalar = refclk_postscalar;
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pll_params->tx_clk_div = tx_clk_div;
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pll_params->fracn_quot = fracn_quot;
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pll_params->fracn_rem = fracn_rem;
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pll_params->fracn_den = fracn_den;
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pll_params->fracn_en = fracn_en;
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pll_params->pmix_en = pmix_en;
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pll_params->multiplier = multiplier;
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pll_params->ana_cp_prop = ana_cp_prop;
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pll_params->mpll_ana_v2i = mpll_ana_v2i;
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pll_params->ana_freq_vco = ana_freq_vco;
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}
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void intel_snps_hdmi_pll_compute_mpllb(struct intel_mpllb_state *pll_state, u64 pixel_clock)
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{
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/* x axis frequencies. One curve in each array per v2i point */
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static const u64 dg2_curve_freq_hz[2][8] = {
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{ 2500000000ULL, 3000000000ULL, 3000000000ULL, 3500000000ULL, 3500000000ULL,
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4000000000ULL, 4000000000ULL, 5000000000ULL },
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{ 4000000000ULL, 4600000000ULL, 4601000000ULL, 5400000000ULL, 5401000000ULL,
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6600000000ULL, 6601000000ULL, 8001000000ULL }
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};
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/* y axis heights multiplied with 1000000000 */
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static const u64 dg2_curve_0[2][8] = {
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{ 34149871, 39803269, 36034544, 40601014, 35646940, 40016109, 35127987, 41889522 },
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{ 70000000, 78770454, 70451838, 80427119, 70991400, 84230173, 72945921, 87064218 }
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};
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/* Multiplied with 100 */
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static const u64 dg2_curve_1[2][8] = {
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{ 85177000000000ULL, 79385227160000ULL, 95672603580000ULL, 88857207160000ULL,
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109379790900000ULL, 103528193900000ULL, 131941242400000ULL, 117279000000000ULL },
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{ 60255000000000ULL, 55569000000000ULL, 72036000000000ULL, 69509000000000ULL,
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81785000000000ULL, 731030000000000ULL, 96591000000000ULL, 69077000000000ULL }
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};
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/* Multiplied with 1000000000000 */
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static const u64 dg2_curve_2[2][8] = {
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{ 2186930000ULL, 2835287134ULL, 2395395343ULL, 2932270687ULL, 2351887545ULL,
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2861031697ULL, 2294149152ULL, 3091730000ULL },
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{ 4560000000ULL, 5570000000ULL, 4610000000ULL, 5770000000ULL, 4670000000ULL,
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6240000000ULL, 4890000000ULL, 6600000000ULL }
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};
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struct pll_output_params pll_params;
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u32 refclk = 100000000;
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u32 prescaler_divider = 1;
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u32 ref_range = 3;
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u32 ana_cp_int_gs = 64;
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u32 ana_cp_prop_gs = 124;
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compute_hdmi_tmds_pll(pixel_clock, refclk, ref_range, ana_cp_int_gs, ana_cp_prop_gs,
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dg2_curve_freq_hz, dg2_curve_0, dg2_curve_1, dg2_curve_2,
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prescaler_divider, &pll_params);
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pll_state->clock = pixel_clock;
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pll_state->ref_control =
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REG_FIELD_PREP(SNPS_PHY_REF_CONTROL_REF_RANGE, ref_range);
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pll_state->mpllb_cp =
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REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT, pll_params.ana_cp_int) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP, pll_params.ana_cp_prop) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_INT_GS, ana_cp_int_gs) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_CP_PROP_GS, ana_cp_prop_gs);
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pll_state->mpllb_div =
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REG_FIELD_PREP(SNPS_PHY_MPLLB_DIV5_CLK_EN, pll_params.mpll_div5_en) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_TX_CLK_DIV, pll_params.tx_clk_div) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_PMIX_EN, pll_params.pmix_en) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_V2I, pll_params.mpll_ana_v2i) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_FREQ_VCO, pll_params.ana_freq_vco);
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pll_state->mpllb_div2 =
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REG_FIELD_PREP(SNPS_PHY_MPLLB_REF_CLK_DIV, prescaler_divider) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_MULTIPLIER, pll_params.multiplier) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_HDMI_DIV, pll_params.hdmi_div);
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pll_state->mpllb_fracn1 =
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REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_CGG_UPDATE_EN, 1) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_EN, pll_params.fracn_en) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_DEN, pll_params.fracn_den);
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pll_state->mpllb_fracn2 =
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REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_QUOT, pll_params.fracn_quot) |
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REG_FIELD_PREP(SNPS_PHY_MPLLB_FRACN_REM, pll_params.fracn_rem);
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pll_state->mpllb_sscen =
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REG_FIELD_PREP(SNPS_PHY_MPLLB_SSC_UP_SPREAD, pll_params.ssc_up_spread);
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}
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void intel_snps_hdmi_pll_compute_c10pll(struct intel_c10pll_state *pll_state, u64 pixel_clock)
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{
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/* x axis frequencies. One curve in each array per v2i point */
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static const u64 c10_curve_freq_hz[2][8] = {
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{ 2500000000ULL, 3000000000ULL, 3000000000ULL, 3500000000ULL, 3500000000ULL,
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4000000000ULL, 4000000000ULL, 5000000000ULL },
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{ 4000000000ULL, 4600000000ULL, 4601000000ULL, 5400000000ULL, 5401000000ULL,
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6600000000ULL, 6601000000ULL, 8001000000ULL }
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};
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/* y axis heights multiplied with 1000000000 */
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static const u64 c10_curve_0[2][8] = {
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{ 41174500, 48605500, 42973700, 49433100, 42408600, 47681900, 40297400, 49131400 },
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{ 82056800, 94420700, 82323400, 96370600, 81273300, 98630100, 81728700, 99105700}
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};
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static const u64 c10_curve_1[2][8] = {
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{ 73300000000000ULL, 66000000000000ULL, 83100000000000ULL, 75300000000000ULL,
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99700000000000ULL, 92300000000000ULL, 125000000000000ULL, 110000000000000ULL },
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{ 53700000000000ULL, 47700000000000ULL, 62200000000000ULL, 54400000000000ULL,
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75100000000000ULL, 63400000000000ULL, 90600000000000ULL, 76300000000000ULL }
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};
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/* Multiplied with 1000000000000 */
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static const u64 c10_curve_2[2][8] = {
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{ 2415790000ULL, 3136460000ULL, 2581990000ULL, 3222670000ULL, 2529330000ULL,
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3042020000ULL, 2336970000ULL, 3191460000ULL},
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{ 4808390000ULL, 5994250000ULL, 4832730000ULL, 6193730000ULL, 4737700000ULL,
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6428750000ULL, 4779200000ULL, 6479340000ULL }
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};
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struct pll_output_params pll_params;
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u32 refclk = 38400000;
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u32 prescaler_divider = 0;
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u32 ref_range = 1;
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u32 ana_cp_int_gs = 30;
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u32 ana_cp_prop_gs = 28;
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compute_hdmi_tmds_pll(pixel_clock, refclk, ref_range,
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ana_cp_int_gs, ana_cp_prop_gs,
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c10_curve_freq_hz, c10_curve_0,
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c10_curve_1, c10_curve_2, prescaler_divider,
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&pll_params);
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pll_state->tx = 0x10;
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pll_state->cmn = 0x1;
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pll_state->pll[0] = REG_FIELD_PREP(C10_PLL0_DIV5CLK_EN, pll_params.mpll_div5_en) |
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REG_FIELD_PREP(C10_PLL0_FRACEN, pll_params.fracn_en) |
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REG_FIELD_PREP(C10_PLL0_PMIX_EN, pll_params.pmix_en) |
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REG_FIELD_PREP(C10_PLL0_ANA_FREQ_VCO_MASK, pll_params.ana_freq_vco);
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pll_state->pll[2] = REG_FIELD_PREP(C10_PLL2_MULTIPLIERL_MASK, pll_params.multiplier);
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pll_state->pll[3] = REG_FIELD_PREP(C10_PLL3_MULTIPLIERH_MASK, pll_params.multiplier >> 8);
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pll_state->pll[8] = REG_FIELD_PREP(C10_PLL8_SSC_UP_SPREAD, pll_params.ssc_up_spread);
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pll_state->pll[9] = REG_FIELD_PREP(C10_PLL9_FRACN_DENL_MASK, pll_params.fracn_den);
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pll_state->pll[10] = REG_FIELD_PREP(C10_PLL10_FRACN_DENH_MASK, pll_params.fracn_den >> 8);
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pll_state->pll[11] = REG_FIELD_PREP(C10_PLL11_FRACN_QUOT_L_MASK, pll_params.fracn_quot);
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pll_state->pll[12] = REG_FIELD_PREP(C10_PLL12_FRACN_QUOT_H_MASK,
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pll_params.fracn_quot >> 8);
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pll_state->pll[13] = REG_FIELD_PREP(C10_PLL13_FRACN_REM_L_MASK, pll_params.fracn_rem);
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pll_state->pll[14] = REG_FIELD_PREP(C10_PLL14_FRACN_REM_H_MASK, pll_params.fracn_rem >> 8);
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pll_state->pll[15] = REG_FIELD_PREP(C10_PLL15_TXCLKDIV_MASK, pll_params.tx_clk_div) |
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REG_FIELD_PREP(C10_PLL15_HDMIDIV_MASK, pll_params.hdmi_div);
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pll_state->pll[16] = REG_FIELD_PREP(C10_PLL16_ANA_CPINT, pll_params.ana_cp_int) |
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REG_FIELD_PREP(C10_PLL16_ANA_CPINTGS_L, ana_cp_int_gs);
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pll_state->pll[17] = REG_FIELD_PREP(C10_PLL17_ANA_CPINTGS_H_MASK, ana_cp_int_gs >> 1) |
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REG_FIELD_PREP(C10_PLL17_ANA_CPPROP_L_MASK, pll_params.ana_cp_prop);
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pll_state->pll[18] =
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REG_FIELD_PREP(C10_PLL18_ANA_CPPROP_H_MASK, pll_params.ana_cp_prop >> 2) |
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REG_FIELD_PREP(C10_PLL18_ANA_CPPROPGS_L_MASK, ana_cp_prop_gs);
|
|
|
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pll_state->pll[19] = REG_FIELD_PREP(C10_PLL19_ANA_CPPROPGS_H_MASK, ana_cp_prop_gs >> 3) |
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REG_FIELD_PREP(C10_PLL19_ANA_V2I_MASK, pll_params.mpll_ana_v2i);
|
|
}
|