| |
| /* |
| * board/amlogic/txl_p321_v1/firmware/power.c |
| * |
| * Copyright (C) 2016 Amlogic, Inc. All rights reserved. |
| * |
| * 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., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| #include <serial.h> |
| //#include <stdio.h> |
| |
| #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
| |
| static int pwm_voltage_table[][2] = { |
| { 0x1c0000, 870}, |
| { 0x1b0001, 880}, |
| { 0x1a0002, 890}, |
| { 0x190003, 900}, |
| { 0x180004, 910}, |
| { 0x170005, 920}, |
| { 0x160006, 930}, |
| { 0x150007, 940}, |
| { 0x140008, 950}, |
| { 0x130009, 960}, |
| { 0x12000a, 970}, |
| { 0x11000b, 980}, |
| { 0x10000c, 990}, |
| { 0x0f000d, 1000}, |
| { 0x0e000e, 1010}, |
| { 0x0d000f, 1020}, |
| { 0x0c0010, 1030}, |
| { 0x0b0011, 1040}, |
| { 0x0a0012, 1050}, |
| { 0x090013, 1060}, |
| { 0x080014, 1070}, |
| { 0x070015, 1080}, |
| { 0x060016, 1090}, |
| { 0x050017, 1100}, |
| { 0x040018, 1110}, |
| { 0x030019, 1120}, |
| { 0x02001a, 1130}, |
| { 0x01001b, 1140}, |
| { 0x00001c, 1150} |
| }; |
| |
| |
| #define P_PIN_MUX_REG3 (*((volatile unsigned *)(0xda834400 + (0x2f << 2)))) |
| #define P_PIN_MUX_REG4 (*((volatile unsigned *)(0xda834400 + (0x30 << 2)))) |
| |
| #define P_PWM_PWM_A (*((volatile unsigned *)(0xc1100000 + (0x2154 << 2)))) |
| #define P_PWM_MISC_REG_AB (*((volatile unsigned *)(0xc1100000 + (0x2156 << 2)))) |
| |
| #define P_EE_TIMER_E (*((volatile unsigned *)(0xc1100000 + (0x2662 << 2)))) |
| |
| enum pwm_id { |
| pwm_a = 0, |
| pwm_ao_b, |
| }; |
| |
| unsigned int _get_time(void) |
| { |
| return P_EE_TIMER_E; |
| } |
| |
| void _udelay_(unsigned int us) |
| { |
| unsigned int t0 = _get_time(); |
| |
| while (_get_time() - t0 <= us) |
| ; |
| } |
| |
| void pwm_init(int id) |
| { |
| unsigned int reg; |
| int vol; |
| |
| switch (id) { |
| case pwm_a: |
| reg = P_PWM_MISC_REG_AB; |
| reg &= ~(0x7f << 8); |
| reg |= ((1 << 15) | (1 << 0)); |
| P_PWM_MISC_REG_AB = reg; |
| /* |
| * default set to max voltage |
| */ |
| //P_PWM_PWM_A = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0]; |
| reg = P_PIN_MUX_REG3; |
| reg &= ~(1 << 21); |
| P_PIN_MUX_REG3 = reg; |
| |
| reg = P_PIN_MUX_REG4; |
| reg &= ~(1 << 26); |
| reg |= (1 << 17); |
| P_PIN_MUX_REG4 = reg; |
| break; |
| |
| case pwm_ao_b: |
| reg = readl(AO_PWM_MISC_REG_AB); |
| reg &= ~(0x7f << 16); |
| reg |= ((1 << 23) | (1 << 1)); |
| writel(reg, AO_PWM_MISC_REG_AB); |
| /* |
| * default set to max voltage |
| */ |
| //vol = pwm_voltage_table[ARRAY_SIZE(pwm_voltage_table) - 1][0]; |
| //writel(vol ,AO_PWM_PWM_B); |
| reg = readl(AO_RTI_PIN_MUX_REG); |
| reg |= (1 << 3); |
| writel(reg, AO_RTI_PIN_MUX_REG); |
| break; |
| default: |
| break; |
| } |
| |
| _udelay_(200); |
| } |
| |
| void pwm_set_voltage(unsigned int id, unsigned int voltage) |
| { |
| int to; |
| |
| for (to = 0; to < ARRAY_SIZE(pwm_voltage_table); to++) { |
| if (pwm_voltage_table[to][1] >= voltage) { |
| break; |
| } |
| } |
| if (to >= ARRAY_SIZE(pwm_voltage_table)) { |
| to = ARRAY_SIZE(pwm_voltage_table) - 1; |
| } |
| switch (id) { |
| case pwm_a: |
| P_PWM_PWM_A = pwm_voltage_table[to][0]; |
| break; |
| |
| case pwm_ao_b: |
| writel(pwm_voltage_table[to][0], AO_PWM_PWM_B); |
| break; |
| default: |
| break; |
| } |
| _udelay_(200); |
| } |
| |
| void power_init(int mode) |
| { |
| unsigned int reg; |
| serial_puts("set vcck to "); |
| serial_put_dec(CONFIG_VCCK_INIT_VOLTAGE); |
| serial_puts(" mv\n"); |
| pwm_set_voltage(pwm_a, CONFIG_VCCK_INIT_VOLTAGE); |
| serial_puts("set vddee to "); |
| serial_put_dec(CONFIG_VDDEE_INIT_VOLTAGE); |
| serial_puts(" mv\n"); |
| pwm_set_voltage(pwm_ao_b, CONFIG_VDDEE_INIT_VOLTAGE); |
| pwm_init(pwm_a); |
| pwm_init(pwm_ao_b); |
| serial_puts("set vddee enable AO_8 to high\n "); |
| reg = readl(AO_GPIO_O_EN_N); |
| reg &= ~(1 << 8); |
| reg |= (1 << 24); |
| writel(reg, AO_GPIO_O_EN_N); |
| serial_puts("set vddee enable AO_2 to high\n "); |
| reg = readl(AO_GPIO_O_EN_N); |
| reg &= ~(1 << 2); |
| reg |= (1 << 18); |
| writel(reg, AO_GPIO_O_EN_N); |
| } |