hikey: support BL2
BL2 is used to load BL31 and SCP_BL2. In HiKey platform, SCP_BL2
is the mcu firmware that is used to scale cpu frequency and switch
low power mode.
Change-Id: I1621aa65bea989fd125ee8502fd56ef72362bf97
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Dan Handley <dan.handley@arm.com>
diff --git a/plat/hisilicon/hikey/hisi_dvfs.c b/plat/hisilicon/hikey/hisi_dvfs.c
new file mode 100644
index 0000000..0d4f893
--- /dev/null
+++ b/plat/hisilicon/hikey/hisi_dvfs.c
@@ -0,0 +1,778 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <console.h>
+#include <debug.h>
+#include <hi6220.h>
+#include <hi6553.h>
+#include <hisi_sram_map.h>
+#include <mmio.h>
+#include <platform.h>
+#include <platform_def.h>
+#include <string.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();
+}