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+/*
+ * Clock initialization routines
+ *
+ * Copyright (c) 2011 The Chromium OS Authors.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __EXYNOS_CLOCK_INIT_H
+#define __EXYNOS_CLOCK_INIT_H
+
+enum {
+ MEM_TIMINGS_MSR_COUNT = 4,
+};
+
+/* These are the ratio's for configuring ARM clock */
+struct arm_clk_ratios {
+ unsigned arm_freq_mhz; /* Frequency of ARM core in MHz */
+
+ unsigned apll_mdiv;
+ unsigned apll_pdiv;
+ unsigned apll_sdiv;
+
+ unsigned arm2_ratio;
+ unsigned apll_ratio;
+ unsigned pclk_dbg_ratio;
+ unsigned atb_ratio;
+ unsigned periph_ratio;
+ unsigned acp_ratio;
+ unsigned cpud_ratio;
+ unsigned arm_ratio;
+};
+
+/* These are the memory timings for a particular memory type and speed */
+struct mem_timings {
+ enum mem_manuf mem_manuf; /* Memory manufacturer */
+ enum ddr_mode mem_type; /* Memory type */
+ unsigned frequency_mhz; /* Frequency of memory in MHz */
+
+ /* Here follow the timing parameters for the selected memory */
+ unsigned apll_mdiv;
+ unsigned apll_pdiv;
+ unsigned apll_sdiv;
+ unsigned mpll_mdiv;
+ unsigned mpll_pdiv;
+ unsigned mpll_sdiv;
+ unsigned cpll_mdiv;
+ unsigned cpll_pdiv;
+ unsigned cpll_sdiv;
+ unsigned gpll_mdiv;
+ unsigned gpll_pdiv;
+ unsigned gpll_sdiv;
+ unsigned epll_mdiv;
+ unsigned epll_pdiv;
+ unsigned epll_sdiv;
+ unsigned vpll_mdiv;
+ unsigned vpll_pdiv;
+ unsigned vpll_sdiv;
+ unsigned bpll_mdiv;
+ unsigned bpll_pdiv;
+ unsigned bpll_sdiv;
+ unsigned pclk_cdrex_ratio;
+ unsigned direct_cmd_msr[MEM_TIMINGS_MSR_COUNT];
+
+ unsigned timing_ref;
+ unsigned timing_row;
+ unsigned timing_data;
+ unsigned timing_power;
+
+ /* DQS, DQ, DEBUG offsets */
+ unsigned phy0_dqs;
+ unsigned phy1_dqs;
+ unsigned phy0_dq;
+ unsigned phy1_dq;
+ unsigned phy0_tFS;
+ unsigned phy1_tFS;
+ unsigned phy0_pulld_dqs;
+ unsigned phy1_pulld_dqs;
+
+ unsigned lpddr3_ctrl_phy_reset;
+ unsigned ctrl_start_point;
+ unsigned ctrl_inc;
+ unsigned ctrl_start;
+ unsigned ctrl_dll_on;
+ unsigned ctrl_ref;
+
+ unsigned ctrl_force;
+ unsigned ctrl_rdlat;
+ unsigned ctrl_bstlen;
+
+ unsigned fp_resync;
+ unsigned iv_size;
+ unsigned dfi_init_start;
+ unsigned aref_en;
+
+ unsigned rd_fetch;
+
+ unsigned zq_mode_dds;
+ unsigned zq_mode_term;
+ unsigned zq_mode_noterm; /* 1 to allow termination disable */
+
+ unsigned memcontrol;
+ unsigned memconfig;
+
+ unsigned membaseconfig0;
+ unsigned membaseconfig1;
+ unsigned prechconfig_tp_cnt;
+ unsigned dpwrdn_cyc;
+ unsigned dsref_cyc;
+ unsigned concontrol;
+ /* Channel and Chip Selection */
+ uint8_t dmc_channels; /* number of memory channels */
+ uint8_t chips_per_channel; /* number of chips per channel */
+ uint8_t chips_to_configure; /* number of chips to configure */
+ uint8_t send_zq_init; /* 1 to send this command */
+ unsigned impedance; /* drive strength impedeance */
+ uint8_t gate_leveling_enable; /* check gate leveling is enabled */
+};
+
+/**
+ * Get the correct memory timings for our selected memory type and speed.
+ *
+ * This function can be called from SPL or the main U-Boot.
+ *
+ * @return pointer to the memory timings that we should use
+ */
+struct mem_timings *clock_get_mem_timings(void);
+
+/*
+ * Initialize clock for the device
+ */
+void system_clock_init(void);
+#endif