/*
* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <string.h>
#include <platform_def.h>
#include <arch_helpers.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <drivers/console.h>
#include <lib/mmio.h>
#include <plat/common/platform.h>
#include <hi6220.h>
#include <hi6553.h>
#include <hisi_sram_map.h>
#define ACPU_FREQ_MAX_NUM 5
#define ACPU_OPP_NUM 7
#define ACPU_VALID_VOLTAGE_MAGIC (0x5A5AC5C5)
#define ACPU_WAIT_TIMEOUT (200)
#define ACPU_WAIT_FOR_WFI_TIMOUT (2000)
#define ACPU_DFS_STATE_CNT (0x10000)
struct acpu_dvfs_sram_stru {
unsigned int magic;
unsigned int support_freq_num;
unsigned int support_freq_max;
unsigned int start_prof;
unsigned int vol[ACPU_OPP_NUM];
};
struct acpu_volt_cal_para {
unsigned int freq;
unsigned int ul_vol;
unsigned int dl_vol;
unsigned int core_ref_hpm;
};
struct ddr_volt_cal_para {
unsigned int freq;
unsigned int ul_vol;
unsigned int dl_vol;
unsigned int ddr_ref_hpm;
};
struct acpu_dvfs_opp_para {
unsigned int freq;
unsigned int acpu_clk_profile0;
unsigned int acpu_clk_profile1;
unsigned int acpu_vol_profile;
unsigned int acpu_pll_freq;
unsigned int acpu_pll_frac;
};
unsigned int efuse_acpu_freq[] = {
1200000, 1250000, 1300000, 1350000,
1400000, 1450000, 1500000, 1550000,
1600000, 1650000, 1700000, 1750000,
1800000, 1850000, 1900000, 1950000,
};
struct acpu_dvfs_opp_para hi6220_acpu_profile[] = {
{ 208000, 0x61E5, 0x022, 0x3A, 0x5220102B, 0x05555555 },
{ 432000, 0x10A6, 0x121, 0x3A, 0x5120102D, 0x10000005 },
{ 729000, 0x2283, 0x100, 0x4A, 0x51101026, 0x10000005 },
{ 960000, 0x1211, 0x100, 0x5B, 0x51101032, 0x10000005 },
{ 1200000, 0x1211, 0x100, 0x6B, 0x5110207D, 0x10000005 },
{ 1400000, 0x1211, 0x100, 0x6B, 0x51101049, 0x10000005 },
{ 1500000, 0x1211, 0x100, 0x6B, 0x51101049, 0x10000005 },
};
struct acpu_dvfs_opp_para *acpu_dvfs_profile = hi6220_acpu_profile;
struct acpu_dvfs_sram_stru *acpu_dvfs_sram_buf =
(struct acpu_dvfs_sram_stru *)MEMORY_AXI_ACPU_FREQ_VOL_ADDR;
static inline void write_reg_mask(uintptr_t addr,
uint32_t val, uint32_t mask)
{
uint32_t reg;
reg = mmio_read_32(addr);
reg = (reg & ~(mask)) | val;
mmio_write_32(addr, reg);
}
static inline uint32_t read_reg_mask(uintptr_t addr,
uint32_t mask, uint32_t offset)
{
uint32_t reg;
reg = mmio_read_32(addr);
reg &= (mask << offset);
return (reg >> offset);
}
static int acpu_dvfs_syspll_cfg(unsigned int prof_id)
{
uint32_t reg0 = 0;
uint32_t count = 0;
uint32_t clk_div_status = 0;
/*
* step 1:
* - ACPUSYSPLLCFG.acpu_subsys_clk_div_sw = 0x3;
* - ACPUSYSPLLCFG.acpu_syspll_clken_cfg = 0x1;
*/
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x3 << 12, 0x3 << 12);
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x1 << 4, 0x1 << 4);
/*
* step 2:
* - ACPUSYSPLLCFG.acpu_syspll_div_cfg:
* 208MHz, set to 0x5;
* 500MHz, set to 0x2;
* other opps set to 0x1
*/
if (prof_id == 0)
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x5 << 0, 0x7 << 0);
else if (prof_id == 1)
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x2 << 0, 0x7 << 0);
else
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x1 << 0, 0x7 << 0);
/*
* step 3:
* - Polling ACPU_SC_CPU_STAT.clk_div_status_vd == 0x3;
* - ACPU_SC_VD_CTRL.tune_en_dif = 0
* - ACPU_SC_VD_CTRL.tune_en_int = 0
* - PMCTRL_ACPUCLKDIV.acpu_ddr_clk_div_cfg = 0x1
* - PMCTRL_ACPUPLLSEL.acpu_pllsw_cfg = 0x1
*/
clk_div_status = 0x3;
do {
reg0 = read_reg_mask(ACPU_SC_CPU_STAT, 0x3, 20);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: clk div status timeout!\n", __func__);
return -1;
}
} while (clk_div_status != reg0);
write_reg_mask(ACPU_SC_VD_CTRL, 0x0, (0x1 << 0) | (0x1 << 11));
write_reg_mask(PMCTRL_ACPUCLKDIV, 0x1 << 8, 0x3 << 8);
write_reg_mask(PMCTRL_ACPUPLLSEL, 0x1 << 0, 0x1 << 0);
return 0;
}
static void acpu_dvfs_clk_div_cfg(unsigned int prof_id,
unsigned int *cpuext_cfg,
unsigned int *acpu_ddr_cfg)
{
if (prof_id == 0) {
write_reg_mask(PMCTRL_ACPUCLKDIV,
(0x1 << SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_cfg_START) |
(0x1 << SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_cfg_START),
(0x3 << SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_cfg_START) |
(0x3 << SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_cfg_START));
*cpuext_cfg = 0x1;
*acpu_ddr_cfg = 0x1;
} else if (prof_id == 1) {
write_reg_mask(PMCTRL_ACPUCLKDIV,
(0x1 << SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_cfg_START) |
(0x1 << SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_cfg_START),
(0x3 << SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_cfg_START) |
(0x3 << SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_cfg_START));
*cpuext_cfg = 0x1;
*acpu_ddr_cfg = 0x1;
} else {
/* ddr has not been inited */
write_reg_mask(PMCTRL_ACPUCLKDIV,
(0x1 << SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_cfg_START) |
(0x0 << SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_cfg_START),
(0x3 << SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_cfg_START) |
(0x3 << SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_cfg_START));
*cpuext_cfg = 0x1;
*acpu_ddr_cfg = 0x0;
}
}
static int acpu_dvfs_freq_ascend(unsigned int cur_prof, unsigned int tar_prof)
{
unsigned int reg0 = 0;
unsigned int reg1 = 0;
unsigned int reg2 = 0;
unsigned int count = 0;
unsigned int cpuext_cfg_val = 0;
unsigned int acpu_ddr_cfg_val = 0;
int ret = 0;
/*
* step 1:
* - PMCTRL_ACPUSYSPLLCFG.acpu_subsys_clk_div_sw = 0x3;
* - ACPUSYSPLLCFG.acpu_syspll_clken_cfg = 0x1;
*
* step 2:
* - PMCTRL_ACPUSYSPLLCFG.acpu_syspll_div_cfg = 0x5 (208MHz)
* - PMCTRL_ACPUSYSPLLCFG.acpu_syspll_div_cfg = 0x2 (500MHz)
* - PMCTRL_ACPUSYSPLLCFG.acpu_syspll_div_cfg = 0x1 (Other OPPs)
*
* step 3:
* - ACPU_SC_CPU_STAT.clk_div_status_vd = 0x3;
* - ACPU_SC_VD_CTRL.tune_en_dif = 0x0;
* - ACPU_SC_VD_CTRL.tune_en_int = 0x0;
* - PMCTRL_ACPUCLKDIV.acpu_ddr_clk_div_cfg = 0x1;
* - PMCTRL_ACPUPLLSEL.acpu_pllsw_cfg = 0x1
*/
ret = acpu_dvfs_syspll_cfg(cur_prof);
if (ret)
return -1;
/*
* step 4:
* - Polling PMCTRL_ACPUPLLSEL.syspll_sw_stat == 0x1
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUPLLSEL, 0x1,
SOC_PMCTRL_ACPUPLLSEL_syspll_sw_stat_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: syspll sw status timeout\n", __func__);
return -1;
}
} while (reg0 != 0x1);
/* Enable VD functionality if > 800MHz */
if (acpu_dvfs_profile[tar_prof].freq > 800000) {
write_reg_mask(ACPU_SC_VD_HPM_CTRL,
HPM_OSC_DIV_VAL, HPM_OSC_DIV_MASK);
/*
* step 5:
* - ACPU_SC_VD_HPM_CTRL.hpm_dly_exp = 0xC7A;
* - ACPU_SC_VD_MASK_PATTERN_CTRL[12:0] = 0xCCB;
*/
write_reg_mask(ACPU_SC_VD_HPM_CTRL,
HPM_DLY_EXP_VAL, HPM_DLY_EXP_MASK);
write_reg_mask(ACPU_SC_VD_MASK_PATTERN_CTRL,
ACPU_SC_VD_MASK_PATTERN_VAL,
ACPU_SC_VD_MASK_PATTERN_MASK);
/*
* step 6:
* - ACPU_SC_VD_DLY_TABLE0_CTRL = 0x1FFF;
* - ACPU_SC_VD_DLY_TABLE1_CTRL = 0x1FFFFFF;
* - ACPU_SC_VD_DLY_TABLE2_CTRL = 0x7FFFFFFF;
* - ACPU_SC_VD_DLY_FIXED_CTRL = 0x1;
*/
mmio_write_32(ACPU_SC_VD_DLY_TABLE0_CTRL, 0x1FFF);
mmio_write_32(ACPU_SC_VD_DLY_TABLE1_CTRL, 0x1FFFFFF);
mmio_write_32(ACPU_SC_VD_DLY_TABLE2_CTRL, 0x7FFFFFFF);
mmio_write_32(ACPU_SC_VD_DLY_FIXED_CTRL, 0x1);
/*
* step 7:
* - ACPU_SC_VD_CTRL.shift_table0 = 0x1;
* - ACPU_SC_VD_CTRL.shift_table1 = 0x3;
* - ACPU_SC_VD_CTRL.shift_table2 = 0x5;
* - ACPU_SC_VD_CTRL.shift_table3 = 0x6;
*
* step 8:
* - ACPU_SC_VD_CTRL.tune = 0x7;
*/
write_reg_mask(ACPU_SC_VD_CTRL,
ACPU_SC_VD_SHIFT_TABLE_TUNE_VAL,
ACPU_SC_VD_SHIFT_TABLE_TUNE_MASK);
}
/* step 9: ACPUPLLCTRL.acpupll_en_cfg = 0x0 */
write_reg_mask(PMCTRL_ACPUPLLCTRL, 0x0,
0x1 << SOC_PMCTRL_ACPUPLLCTRL_acpupll_en_cfg_START);
/* step 10: set PMCTRL_ACPUPLLFREQ and PMCTRL_ACPUPLLFRAC */
mmio_write_32(PMCTRL_ACPUPLLFREQ,
acpu_dvfs_profile[tar_prof].acpu_pll_freq);
mmio_write_32(PMCTRL_ACPUPLLFRAC,
acpu_dvfs_profile[tar_prof].acpu_pll_frac);
/*
* step 11:
* - wait for 1us;
* - PMCTRL_ACPUPLLCTRL.acpupll_en_cfg = 0x1
*/
count = 0;
while (count < ACPU_WAIT_TIMEOUT)
count++;
write_reg_mask(PMCTRL_ACPUPLLCTRL,
0x1 << SOC_PMCTRL_ACPUPLLCTRL_acpupll_en_cfg_START,
0x1 << SOC_PMCTRL_ACPUPLLCTRL_acpupll_en_cfg_START);
/* step 12: PMCTRL_ACPUVOLPMUADDR = 0x100da */
mmio_write_32(PMCTRL_ACPUVOLPMUADDR, 0x100da);
/*
* step 13:
* - PMCTRL_ACPUDESTVOL.acpu_dest_vol = 0x13 (208MHz);
* - PMCTRL_ACPUDESTVOL.acpu_dest_vol = 0x13 (500MHz);
* - PMCTRL_ACPUDESTVOL.acpu_dest_vol = 0x20 (798MHz);
* - PMCTRL_ACPUDESTVOL.acpu_dest_vol = 0x3A (1300MHz);
* - PMCTRL_ACPUDESTVOL.acpu_dest_vol = 0x3A (1500MHz);
*/
write_reg_mask(PMCTRL_ACPUDESTVOL,
acpu_dvfs_profile[tar_prof].acpu_vol_profile,
((0x1 << (SOC_PMCTRL_ACPUDESTVOL_acpu_dest_vol_END + 1)) - 1));
/*
* step 14:
* - Polling PMCTRL_ACPUDESTVOL.acpu_vol_using == ACPUDESTVOL.acpu_dest_vol
* - Polling ACPUVOLTIMEOUT.acpu_vol_timeout == 0x1
* - Config PMCTRL_ACPUCLKDIV.acpu_ddr_clk_div_cfg
* - Config ACPUCLKDIV.cpuext_clk_div_cfg;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUDESTVOL, 0x7F,
SOC_PMCTRL_ACPUDESTVOL_acpu_dest_vol_START);
reg1 = read_reg_mask(PMCTRL_ACPUDESTVOL, 0x7F,
SOC_PMCTRL_ACPUDESTVOL_acpu_vol_using_START);
reg2 = read_reg_mask(PMCTRL_ACPUVOLTTIMEOUT, 0x1,
SOC_PMCTRL_ACPUVOLTIMEOUT_acpu_vol_timeout_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpu destvol cfg timeout.\n", __func__);
return -1;
}
} while ((reg0 != reg1) || (reg2 != 0x1));
acpu_dvfs_clk_div_cfg(tar_prof, &cpuext_cfg_val, &acpu_ddr_cfg_val);
/*
* step 15:
* - Polling PMCTRL_ACPUCLKDIV.cpuext_clk_div_stat;
* - Polling ACPUCLKDIV.acpu_ddr_clk_div_stat;
* - ACPUPLLCTRL.acpupll_timeout = 0x1;
* - PMCTRL_ACPUPLLSEL.acpu_pllsw_cfg = 0x0;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUCLKDIV, 0x3,
SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_stat_START);
reg1 = read_reg_mask(PMCTRL_ACPUCLKDIV, 0x3,
SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_stat_START);
reg2 = read_reg_mask(PMCTRL_ACPUPLLCTRL, 0x1,
SOC_PMCTRL_ACPUPLLCTRL_acpupll_timeout_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpu clk div cfg timeout.\n", __func__);
return -1;
}
} while ((reg1 != cpuext_cfg_val) ||
(reg0 != acpu_ddr_cfg_val) ||
(reg2 != 0x1));
write_reg_mask(PMCTRL_ACPUPLLSEL, 0x0,
0x1 << SOC_PMCTRL_ACPUPLLSEL_acpu_pllsw_cfg_START);
/*
* step 16:
* - Polling PMCTRL_ACPUPLLSEL.acpupll_sw_stat == 0x1;
* - ACPU_SC_VD_CTRL.force_clk_en = 0x0;
* - ACPU_SC_VD_CTRL.clk_dis_cnt_en = 0x0;
* - ACPU_SC_VD_CTRL.calibrate_en_ini = 0x0;
* - ACPU_SC_VD_CTRL.calibrate_en_dif = 0x0;
* - ACPU_SC_VD_CTRL.div_en_dif = 0x1;
* - ACPU_SC_VD_CTRL.tune_en_int = 0x1;
* - ACPU_SC_VD_CTRL.tune_en_dif = 0x1;
* - PMCTRL_ACPUSYSPLLCFG.acpu_subsys_clk_div_sw = 0x0;
* - ACPUSYSPLLCFG.acpu_syspll_clken_cfg = 0x0;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUPLLSEL, 0x1,
SOC_PMCTRL_ACPUPLLSEL_acpu_pllsw_stat_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpu pll sw status timeout.\n", __func__);
return -1;
}
} while (reg0 != 0x1);
if (acpu_dvfs_profile[tar_prof].freq > 800000)
write_reg_mask(ACPU_SC_VD_CTRL,
ACPU_SC_VD_EN_ASIC_VAL, ACPU_SC_VD_EN_MASK);
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x0,
(0x3 << SOC_PMCTRL_ACPUSYSPLLCFG_acpu_subsys_clk_div_sw_START) |
(0x1 << SOC_PMCTRL_ACPUSYSPLLCFG_acpu_syspll_clken_cfg_START));
return 0;
}
static int acpu_dvfs_freq_descend(unsigned int cur_prof, unsigned int tar_prof)
{
unsigned int reg0 = 0;
unsigned int reg1 = 0;
unsigned int reg2 = 0;
unsigned int count = 0;
unsigned int cpuext_cfg_val = 0;
unsigned int acpu_ddr_cfg_val = 0;
int ret = 0;
ret = acpu_dvfs_syspll_cfg(tar_prof);
if (ret)
return -1;
/*
* step 4:
* - Polling PMCTRL_ACPUPLLSEL.syspll_sw_stat == 0x1
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUPLLSEL, 0x1, 2);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: syspll sw status timeout.\n", __func__);
return -1;
}
} while (reg0 != 0x1);
/*
* Step 5:
* - PMCTRL_ACPUPLLCTRL.acpupll_en_cfg = 0x0
*/
write_reg_mask(PMCTRL_ACPUPLLCTRL, 0x0, 0x1 << 0);
/*
* step 6
* - Config PMCTRL_ACPUPLLFREQ and ACPUPLLFRAC
*/
mmio_write_32(PMCTRL_ACPUPLLFREQ, acpu_dvfs_profile[tar_prof].acpu_pll_freq);
mmio_write_32(PMCTRL_ACPUPLLFRAC, acpu_dvfs_profile[tar_prof].acpu_pll_frac);
/*
* step 7:
* - Wait 1us;
* - Config PMCTRL_ACPUPLLCTRL.acpupll_en_cfg = 0x1
*/
count = 0;
while (count < ACPU_WAIT_TIMEOUT)
count++;
write_reg_mask(PMCTRL_ACPUPLLCTRL,
0x1 << SOC_PMCTRL_ACPUPLLCTRL_acpupll_en_cfg_START,
0x1 << SOC_PMCTRL_ACPUPLLCTRL_acpupll_en_cfg_START);
/* Enable VD functionality if > 800MHz */
if (acpu_dvfs_profile[tar_prof].freq > 800000) {
write_reg_mask(ACPU_SC_VD_HPM_CTRL,
HPM_OSC_DIV_VAL, HPM_OSC_DIV_MASK);
/*
* step 9:
* - ACPU_SC_VD_HPM_CTRL.hpm_dly_exp = 0xC7A;
* - ACPU_SC_VD_MASK_PATTERN_CTRL[12:0] = 0xCCB;
*/
write_reg_mask(ACPU_SC_VD_HPM_CTRL,
HPM_DLY_EXP_VAL, HPM_DLY_EXP_MASK);
write_reg_mask(ACPU_SC_VD_MASK_PATTERN_CTRL,
ACPU_SC_VD_MASK_PATTERN_VAL,
ACPU_SC_VD_MASK_PATTERN_MASK);
/*
* step 10:
* - ACPU_SC_VD_DLY_TABLE0_CTRL = 0x1FFF;
* - ACPU_SC_VD_DLY_TABLE1_CTRL = 0x1FFFFFF;
* - ACPU_SC_VD_DLY_TABLE2_CTRL = 0x7FFFFFFF;
* - ACPU_SC_VD_DLY_FIXED_CTRL = 0x1;
*/
mmio_write_32(ACPU_SC_VD_DLY_TABLE0_CTRL, 0x1FFF);
mmio_write_32(ACPU_SC_VD_DLY_TABLE1_CTRL, 0x1FFFFFF);
mmio_write_32(ACPU_SC_VD_DLY_TABLE2_CTRL, 0x7FFFFFFF);
mmio_write_32(ACPU_SC_VD_DLY_FIXED_CTRL, 0x1);
/*
* step 11:
* - ACPU_SC_VD_CTRL.shift_table0 = 0x1;
* - ACPU_SC_VD_CTRL.shift_table1 = 0x3;
* - ACPU_SC_VD_CTRL.shift_table2 = 0x5;
* - ACPU_SC_VD_CTRL.shift_table3 = 0x6;
*
* step 12:
* - ACPU_SC_VD_CTRL.tune = 0x7;
*/
write_reg_mask(ACPU_SC_VD_CTRL,
ACPU_SC_VD_SHIFT_TABLE_TUNE_VAL,
ACPU_SC_VD_SHIFT_TABLE_TUNE_MASK);
}
/*
* step 13:
* - Pollig PMCTRL_ACPUPLLCTRL.acpupll_timeout == 0x1;
* - PMCTRL_ACPUPLLSEL.acpu_pllsw_cfg = 0x0;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUPLLCTRL, 0x1,
SOC_PMCTRL_ACPUPLLCTRL_acpupll_timeout_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpupll timeout.\n", __func__);
return -1;
}
} while (reg0 != 0x1);
write_reg_mask(PMCTRL_ACPUPLLSEL, 0x0,
0x1 << SOC_PMCTRL_ACPUPLLSEL_acpu_pllsw_cfg_START);
/*
* step 14:
* - Polling PMCTRL_ACPUPLLSEL.acpupll_sw_stat == 0x1;
* - ACPU_SC_VD_CTRL.force_clk_en = 0x0;
* - ACPU_SC_VD_CTRL.clk_dis_cnt_en = 0x0;
* - ACPU_SC_VD_CTRL.calibrate_en_ini = 0x0;
* - ACPU_SC_VD_CTRL.calibrate_en_dif = 0x0;
* - ACPU_SC_VD_CTRL.div_en_dif = 0x1;
* - ACPU_SC_VD_CTRL.tune_en_int = 0x1;
* - ACPU_SC_VD_CTRL.tune_en_dif = 0x1;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUPLLSEL, 0x1,
SOC_PMCTRL_ACPUPLLSEL_acpu_pllsw_stat_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpupll sw status timeout.\n", __func__);
return -1;
}
} while (reg0 != 0x1);
if (acpu_dvfs_profile[tar_prof].freq > 800000)
write_reg_mask(ACPU_SC_VD_CTRL,
ACPU_SC_VD_EN_ASIC_VAL, ACPU_SC_VD_EN_MASK);
/*
* step 15:
* - PMCTRL_ACPUSYSPLLCFG.acpu_subsys_clk_div_sw = 0x0;
* - ACPUSYSPLLCFG.acpu_syspll_clken_cfg = 0x0;
*/
write_reg_mask(PMCTRL_ACPUSYSPLLCFG, 0x0,
(0x3 << SOC_PMCTRL_ACPUSYSPLLCFG_acpu_subsys_clk_div_sw_START) |
(0x1 << SOC_PMCTRL_ACPUSYSPLLCFG_acpu_syspll_clken_cfg_START));
/*
* step 16:
* - Polling ACPU_SC_CPU_STAT.clk_div_status_vd == 0x0;
*/
count = 0;
do {
reg0 = read_reg_mask(ACPU_SC_CPU_STAT, 0x3,
ACPU_SC_CPU_STAT_CLK_DIV_STATUS_VD_SHIFT);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: clk div status timeout.\n", __func__);
return -1;
}
} while (reg0 != 0x0);
acpu_dvfs_clk_div_cfg(tar_prof, &cpuext_cfg_val, &acpu_ddr_cfg_val);
/*
* step 17:
* - Polling PMCTRL_ACPUCLKDIV.cpuext_clk_div_stat;
* - Polling ACPUCLKDIV.acpu_ddr_clk_div_stat;
* - PMCTRL_ACPUVOLPMUADDR = 0x1006C;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUCLKDIV, 0x3,
SOC_PMCTRL_ACPUCLKDIV_cpuext_clk_div_stat_START);
reg1 = read_reg_mask(PMCTRL_ACPUCLKDIV, 0x3,
SOC_PMCTRL_ACPUCLKDIV_acpu_ddr_clk_div_stat_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpu clk div cfg timeout.\n", __func__);
return -1;
}
} while ((reg0 != cpuext_cfg_val) || (reg1 != acpu_ddr_cfg_val));
mmio_write_32(PMCTRL_ACPUVOLPMUADDR, 0x100da);
/*
* step 16:
* - Polling PMCTRL_ACPUPLLSEL.acpupll_sw_stat == 0x1;
* - ACPU_SC_VD_CTRL.force_clk_en = 0x0;
* - ACPU_SC_VD_CTRL.clk_dis_cnt_en = 0x0;
* - ACPU_SC_VD_CTRL.calibrate_en_ini = 0x0;
* - ACPU_SC_VD_CTRL.calibrate_en_dif = 0x0;
* - ACPU_SC_VD_CTRL.div_en_dif = 0x1;
* - ACPU_SC_VD_CTRL.tune_en_int = 0x1;
* - ACPU_SC_VD_CTRL.tune_en_dif = 0x1;
* - PMCTRL_ACPUSYSPLLCFG.acpu_subsys_clk_div_sw = 0x0;
* - ACPUSYSPLLCFG.acpu_syspll_clken_cfg = 0x0;
*/
write_reg_mask(PMCTRL_ACPUDESTVOL,
acpu_dvfs_profile[tar_prof].acpu_vol_profile,
((0x1 << (SOC_PMCTRL_ACPUDESTVOL_acpu_dest_vol_END + 1)) - 1));
/*
* step 19:
* - Polling PMCTRL_ACPUDESTVOL.acpu_vol_using == ACPUDESTVOL.acpu_dest_vol
* - ACPUVOLTIMEOUT.acpu_vol_timeout = 0x1;
*/
count = 0;
do {
reg0 = read_reg_mask(PMCTRL_ACPUDESTVOL, 0x7F,
SOC_PMCTRL_ACPUDESTVOL_acpu_dest_vol_START);
reg1 = read_reg_mask(PMCTRL_ACPUDESTVOL, 0x7F,
SOC_PMCTRL_ACPUDESTVOL_acpu_vol_using_START);
reg2 = read_reg_mask(PMCTRL_ACPUVOLTTIMEOUT, 0x1,
SOC_PMCTRL_ACPUVOLTIMEOUT_acpu_vol_timeout_START);
if ((count++) > ACPU_DFS_STATE_CNT) {
ERROR("%s: acpu destvol cfg timeout.\n", __func__);
return -1;
}
} while ((reg0 != reg1) || (reg2 != 0x1));
return 0;
}
int acpu_dvfs_target(unsigned int curr_prof, unsigned int target_prof)
{
int ret = 0;
if (curr_prof == target_prof) {
INFO("%s: target_prof is equal curr_prof: is %d!\n",
__func__, curr_prof);
return 0;
}
if ((curr_prof >= ACPU_FREQ_MAX_NUM) ||
(target_prof >= ACPU_FREQ_MAX_NUM)) {
INFO("%s: invalid parameter %d %d\n",
__func__, curr_prof, target_prof);
return -1;
}
if (target_prof > acpu_dvfs_sram_buf->support_freq_num)
target_prof = acpu_dvfs_sram_buf->support_freq_num;
if (target_prof < curr_prof)
ret = acpu_dvfs_freq_descend(curr_prof, target_prof);
else if (target_prof > curr_prof)
ret = acpu_dvfs_freq_ascend(curr_prof, target_prof);
if (ret) {
ERROR("%s: acpu_dvfs_target failed!\n", __func__);
return -1;
}
/* Complete acpu dvfs setting and set magic number */
acpu_dvfs_sram_buf->start_prof = target_prof;
acpu_dvfs_sram_buf->magic = ACPU_VALID_VOLTAGE_MAGIC;
mmio_write_32(DDR_DFS_FREQ_ADDR, 800000);
return 0;
}
static int acpu_dvfs_set_freq(void)
{
unsigned int i;
unsigned int curr_prof;
unsigned int target_prof;
unsigned int max_freq = 0;
max_freq = acpu_dvfs_sram_buf->support_freq_max;
for (i = 0; i < acpu_dvfs_sram_buf->support_freq_num; i++) {
if (max_freq == hi6220_acpu_profile[i].freq) {
target_prof = i;
break;
}
}
if (i == acpu_dvfs_sram_buf->support_freq_num) {
ERROR("%s: cannot found max freq profile\n", __func__);
return -1;
}
curr_prof = 0;
target_prof = i;
/* if max freq is 208MHz, do nothing */
if (curr_prof == target_prof)
return 0;
if (acpu_dvfs_target(curr_prof, target_prof)) {
ERROR("%s: set acpu freq failed!", __func__);
return -1;
}
INFO("%s: support freq num is %d\n",
__func__, acpu_dvfs_sram_buf->support_freq_num);
INFO("%s: start prof is 0x%x\n",
__func__, acpu_dvfs_sram_buf->start_prof);
INFO("%s: magic is 0x%x\n",
__func__, acpu_dvfs_sram_buf->magic);
INFO("%s: voltage:\n", __func__);
for (i = 0; i < acpu_dvfs_sram_buf->support_freq_num; i++)
INFO(" - %d: 0x%x\n", i, acpu_dvfs_sram_buf->vol[i]);
NOTICE("%s: set acpu freq success!", __func__);
return 0;
}
struct acpu_dvfs_volt_setting {
unsigned int magic;
unsigned int support_freq_num;
unsigned int support_freq_max;
unsigned int start_prof;
unsigned int vol[7];
unsigned int hmp_dly_threshold[7];
};
static void acpu_dvfs_volt_init(void)
{
struct acpu_dvfs_volt_setting *volt;
/*
* - set default voltage;
* - set pmu address;
* - set voltage up and down step;
* - set voltage stable time;
*/
mmio_write_32(PMCTRL_ACPUDFTVOL, 0x4a);
mmio_write_32(PMCTRL_ACPUVOLPMUADDR, 0xda);
mmio_write_32(PMCTRL_ACPUVOLUPSTEP, 0x1);
mmio_write_32(PMCTRL_ACPUVOLDNSTEP, 0x1);
mmio_write_32(PMCTRL_ACPUPMUVOLUPTIME, 0x60);
mmio_write_32(PMCTRL_ACPUPMUVOLDNTIME, 0x60);
mmio_write_32(PMCTRL_ACPUCLKOFFCFG, 0x1000);
volt = (void *)MEMORY_AXI_ACPU_FREQ_VOL_ADDR;
volt->magic = 0x5a5ac5c5;
volt->support_freq_num = 5;
volt->support_freq_max = 1200000;
volt->start_prof = 4;
volt->vol[0] = 0x49;
volt->vol[1] = 0x49;
volt->vol[2] = 0x50;
volt->vol[3] = 0x60;
volt->vol[4] = 0x78;
volt->vol[5] = 0x78;
volt->vol[6] = 0x78;
volt->hmp_dly_threshold[0] = 0x0;
volt->hmp_dly_threshold[1] = 0x0;
volt->hmp_dly_threshold[2] = 0x0;
volt->hmp_dly_threshold[3] = 0x0e8b0e45;
volt->hmp_dly_threshold[4] = 0x10691023;
volt->hmp_dly_threshold[5] = 0x10691023;
volt->hmp_dly_threshold[6] = 0x10691023;
INFO("%s: success!\n", __func__);
}
void init_acpu_dvfs(void)
{
unsigned int i = 0;
INFO("%s: pmic version %d\n", __func__,
mmio_read_8(HI6553_VERSION_REG));
/* init parameters */
mmio_write_32(ACPU_CHIP_MAX_FREQ, efuse_acpu_freq[8]);
INFO("%s: ACPU_CHIP_MAX_FREQ=0x%x.\n",
__func__, mmio_read_32(ACPU_CHIP_MAX_FREQ));
/* set maximum support frequency to 1.2GHz */
for (i = 0; i < ACPU_FREQ_MAX_NUM; i++)
acpu_dvfs_sram_buf->vol[i] = hi6220_acpu_profile[i].acpu_vol_profile;
acpu_dvfs_sram_buf->support_freq_num = ACPU_FREQ_MAX_NUM;
acpu_dvfs_sram_buf->support_freq_max = 1200000;
/* init acpu dvfs */
acpu_dvfs_volt_init();
acpu_dvfs_set_freq();
}
