Angel Pons | 163030b | 2020-04-05 13:22:07 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 2 | |
Julius Werner | f0d21ff3 | 2014-10-20 13:24:14 -0700 | [diff] [blame] | 3 | #include <boardid.h> |
Tom Warren | bb932c5 | 2014-04-30 14:51:38 -0700 | [diff] [blame] | 4 | #include <console/console.h> |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 5 | #include <delay.h> |
Nico Huber | 0f2dd1e | 2017-08-01 14:02:40 +0200 | [diff] [blame] | 6 | #include <device/i2c_simple.h> |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 7 | #include <stdint.h> |
Daisuke Nojiri | 512bfbc | 2014-08-15 17:07:39 -0700 | [diff] [blame] | 8 | #include <reset.h> |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 9 | |
Julius Werner | f0d21ff3 | 2014-10-20 13:24:14 -0700 | [diff] [blame] | 10 | #include "pmic.h" |
| 11 | |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 12 | enum { |
| 13 | AS3722_I2C_ADDR = 0x40 |
| 14 | }; |
| 15 | |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 16 | struct as3722_init_reg { |
| 17 | u8 reg; |
| 18 | u8 val; |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 19 | u8 delay; |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 20 | }; |
| 21 | |
| 22 | static struct as3722_init_reg init_list[] = { |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 23 | {AS3722_SDO0, 0x3C, 1}, |
| 24 | {AS3722_SDO1, 0x32, 0}, |
| 25 | {AS3722_LDO3, 0x59, 0}, |
| 26 | {AS3722_SDO2, 0x3C, 0}, |
| 27 | {AS3722_SDO3, 0x00, 0}, |
| 28 | {AS3722_SDO4, 0x00, 0}, |
| 29 | {AS3722_SDO5, 0x50, 0}, |
| 30 | {AS3722_SDO6, 0x28, 1}, |
| 31 | {AS3722_LDO0, 0x8A, 0}, |
| 32 | {AS3722_LDO1, 0x00, 0}, |
| 33 | {AS3722_LDO2, 0x10, 0}, |
| 34 | {AS3722_LDO4, 0x00, 0}, |
| 35 | {AS3722_LDO5, 0x00, 0}, |
Hung-Te Lin | 86bd91a | 2014-04-25 08:21:24 +0800 | [diff] [blame] | 36 | {AS3722_LDO6, 0x00, 0}, |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 37 | {AS3722_LDO7, 0x00, 0}, |
| 38 | {AS3722_LDO9, 0x00, 0}, |
| 39 | {AS3722_LDO10, 0x00, 0}, |
| 40 | {AS3722_LDO11, 0x00, 1}, |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 41 | }; |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 42 | |
Martin Roth | ad0f485 | 2019-10-23 21:41:43 -0600 | [diff] [blame] | 43 | static void pmic_write_reg(unsigned int bus, uint8_t reg, uint8_t val, int do_delay) |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 44 | { |
Tom Warren | bb932c5 | 2014-04-30 14:51:38 -0700 | [diff] [blame] | 45 | if (i2c_writeb(bus, AS3722_I2C_ADDR, reg, val)) { |
| 46 | printk(BIOS_ERR, "%s: reg = 0x%02X, value = 0x%02X failed!\n", |
| 47 | __func__, reg, val); |
| 48 | /* Reset the SoC on any PMIC write error */ |
Nico Huber | e879136 | 2018-10-06 17:53:14 +0200 | [diff] [blame] | 49 | board_reset(); |
Tom Warren | bb932c5 | 2014-04-30 14:51:38 -0700 | [diff] [blame] | 50 | } else { |
| 51 | if (do_delay) |
| 52 | udelay(500); |
| 53 | } |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 54 | } |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 55 | |
Martin Roth | ad0f485 | 2019-10-23 21:41:43 -0600 | [diff] [blame] | 56 | static void pmic_slam_defaults(unsigned int bus) |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 57 | { |
| 58 | int i; |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 59 | for (i = 0; i < ARRAY_SIZE(init_list); i++) { |
| 60 | struct as3722_init_reg *reg = &init_list[i]; |
| 61 | pmic_write_reg(bus, reg->reg, reg->val, reg->delay); |
| 62 | } |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 63 | } |
| 64 | |
Martin Roth | ad0f485 | 2019-10-23 21:41:43 -0600 | [diff] [blame] | 65 | void pmic_init(unsigned int bus) |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 66 | { |
| 67 | /* |
| 68 | * Don't need to set up VDD_CORE - already done - by OTP |
| 69 | * Don't write SDCONTROL - it's already 0x7F, i.e. all SDs enabled. |
| 70 | * Don't write LDCONTROL - it's already 0xFF, i.e. all LDOs enabled. |
| 71 | */ |
| 72 | |
| 73 | /* Restore PMIC POR defaults, in case kernel changed 'em */ |
| 74 | pmic_slam_defaults(bus); |
| 75 | |
| 76 | /* First set VDD_CPU to 1.2V, then enable the VDD_CPU regulator. */ |
| 77 | if (board_id() == 0) |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 78 | pmic_write_reg(bus, 0x00, 0x3c, 1); |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 79 | else |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 80 | pmic_write_reg(bus, 0x00, 0x50, 1); |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 81 | |
| 82 | /* First set VDD_GPU to 1.0V, then enable the VDD_GPU regulator. */ |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 83 | pmic_write_reg(bus, 0x06, 0x28, 1); |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 84 | |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 85 | /* |
| 86 | * First set +1.2V_GEN_AVDD to 1.2V, then enable the +1.2V_GEN_AVDD |
| 87 | * regulator. |
| 88 | */ |
| 89 | pmic_write_reg(bus, 0x12, 0x10, 1); |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 90 | |
| 91 | /* |
Julius Werner | edf6b57 | 2013-10-25 17:49:26 -0700 | [diff] [blame] | 92 | * Panel power GPIO O4. Set mode for GPIO4 (0x0c to 7), then set |
Hung-Te Lin | 2fc3b62 | 2013-10-21 21:43:03 +0800 | [diff] [blame] | 93 | * the value (register 0x20 bit 4) |
| 94 | */ |
Gabe Black | 1f4e283 | 2014-03-05 22:24:54 -0800 | [diff] [blame] | 95 | pmic_write_reg(bus, 0x0c, 0x07, 0); |
| 96 | pmic_write_reg(bus, 0x20, 0x10, 1); |
Gabe Black | d40be11 | 2013-10-09 23:45:07 -0700 | [diff] [blame] | 97 | } |