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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glass2a4febf2016-01-21 19:43:29 -07002/*
3 * Copyright (C) 2015 Google, Inc
4 * Written by Simon Glass <sjg@chromium.org>
Simon Glass2a4febf2016-01-21 19:43:29 -07005 */
6
7#include <common.h>
8#include <dm.h>
9#include <errno.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060010#include <log.h>
Jacob Chen453c5a92017-05-02 14:54:52 +080011#include <power/rk8xx_pmic.h>
Simon Glass2a4febf2016-01-21 19:43:29 -070012#include <power/pmic.h>
13
Joseph Chenb4a35572019-09-26 15:44:55 +080014static struct reg_data rk817_init_reg[] = {
15/* enable the under-voltage protection,
16 * the under-voltage protection will shutdown the LDO3 and reset the PMIC
17 */
18 { RK817_BUCK4_CMIN, 0x60, 0x60},
19};
20
Simon Glass2a4febf2016-01-21 19:43:29 -070021static const struct pmic_child_info pmic_children_info[] = {
Jacob Chen453c5a92017-05-02 14:54:52 +080022 { .prefix = "DCDC_REG", .driver = "rk8xx_buck"},
23 { .prefix = "LDO_REG", .driver = "rk8xx_ldo"},
24 { .prefix = "SWITCH_REG", .driver = "rk8xx_switch"},
Simon Glass2a4febf2016-01-21 19:43:29 -070025 { },
26};
27
Jacob Chen453c5a92017-05-02 14:54:52 +080028static int rk8xx_reg_count(struct udevice *dev)
Simon Glass2a4febf2016-01-21 19:43:29 -070029{
30 return RK808_NUM_OF_REGS;
31}
32
Jacob Chen453c5a92017-05-02 14:54:52 +080033static int rk8xx_write(struct udevice *dev, uint reg, const uint8_t *buff,
Simon Glass2a4febf2016-01-21 19:43:29 -070034 int len)
35{
Simon Glass7d577992016-01-21 19:43:58 -070036 int ret;
37
38 ret = dm_i2c_write(dev, reg, buff, len);
39 if (ret) {
Simon Glassc83c4362018-11-18 08:14:28 -070040 debug("write error to device: %p register: %#x!\n", dev, reg);
Simon Glass7d577992016-01-21 19:43:58 -070041 return ret;
Simon Glass2a4febf2016-01-21 19:43:29 -070042 }
43
44 return 0;
45}
46
Jacob Chen453c5a92017-05-02 14:54:52 +080047static int rk8xx_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
Simon Glass2a4febf2016-01-21 19:43:29 -070048{
Simon Glass7d577992016-01-21 19:43:58 -070049 int ret;
50
51 ret = dm_i2c_read(dev, reg, buff, len);
52 if (ret) {
Simon Glassc83c4362018-11-18 08:14:28 -070053 debug("read error from device: %p register: %#x!\n", dev, reg);
Simon Glass7d577992016-01-21 19:43:58 -070054 return ret;
Simon Glass2a4febf2016-01-21 19:43:29 -070055 }
56
57 return 0;
58}
59
60#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
Jacob Chen453c5a92017-05-02 14:54:52 +080061static int rk8xx_bind(struct udevice *dev)
Simon Glass2a4febf2016-01-21 19:43:29 -070062{
Simon Glass7a869e62017-05-18 20:09:32 -060063 ofnode regulators_node;
Simon Glass2a4febf2016-01-21 19:43:29 -070064 int children;
65
Simon Glass7a869e62017-05-18 20:09:32 -060066 regulators_node = dev_read_subnode(dev, "regulators");
67 if (!ofnode_valid(regulators_node)) {
Simon Glassc83c4362018-11-18 08:14:28 -070068 debug("%s: %s regulators subnode not found!\n", __func__,
Simon Glass2a4febf2016-01-21 19:43:29 -070069 dev->name);
70 return -ENXIO;
71 }
72
73 debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
74
75 children = pmic_bind_children(dev, regulators_node, pmic_children_info);
76 if (!children)
77 debug("%s: %s - no child found\n", __func__, dev->name);
78
79 /* Always return success for this device */
80 return 0;
81}
82#endif
83
Jacob Chen453c5a92017-05-02 14:54:52 +080084static int rk8xx_probe(struct udevice *dev)
Jacob Chend77af8a2017-05-02 14:54:49 +080085{
Jacob Chen453c5a92017-05-02 14:54:52 +080086 struct rk8xx_priv *priv = dev_get_priv(dev);
Joseph Chenb4a35572019-09-26 15:44:55 +080087 struct reg_data *init_data = NULL;
88 int init_data_num = 0;
89 int ret = 0, i, show_variant;
90 u8 msb, lsb, id_msb, id_lsb;
91 u8 on_source = 0, off_source = 0;
92 u8 power_en0, power_en1, power_en2, power_en3;
93 u8 value;
Jacob Chend77af8a2017-05-02 14:54:49 +080094
95 /* read Chip variant */
Joseph Chenee300682019-09-26 15:45:07 +080096 if (device_is_compatible(dev, "rockchip,rk817") ||
97 device_is_compatible(dev, "rockchip,rk809")) {
Joseph Chenb4a35572019-09-26 15:44:55 +080098 id_msb = RK817_ID_MSB;
99 id_lsb = RK817_ID_LSB;
100 } else {
101 id_msb = ID_MSB;
102 id_lsb = ID_LSB;
103 }
104
105 ret = rk8xx_read(dev, id_msb, &msb, 1);
106 if (ret)
107 return ret;
108 ret = rk8xx_read(dev, id_lsb, &lsb, 1);
109 if (ret)
110 return ret;
Jacob Chend77af8a2017-05-02 14:54:49 +0800111
112 priv->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
Joseph Chenb4a35572019-09-26 15:44:55 +0800113 show_variant = priv->variant;
114 switch (priv->variant) {
115 case RK808_ID:
116 show_variant = 0x808; /* RK808 hardware ID is 0 */
117 break;
118 case RK805_ID:
119 case RK816_ID:
120 case RK818_ID:
121 on_source = RK8XX_ON_SOURCE;
122 off_source = RK8XX_OFF_SOURCE;
123 break;
Joseph Chenee300682019-09-26 15:45:07 +0800124 case RK809_ID:
Joseph Chenb4a35572019-09-26 15:44:55 +0800125 case RK817_ID:
126 on_source = RK817_ON_SOURCE;
127 off_source = RK817_OFF_SOURCE;
128 init_data = rk817_init_reg;
129 init_data_num = ARRAY_SIZE(rk817_init_reg);
130 power_en0 = pmic_reg_read(dev, RK817_POWER_EN0);
131 power_en1 = pmic_reg_read(dev, RK817_POWER_EN1);
132 power_en2 = pmic_reg_read(dev, RK817_POWER_EN2);
133 power_en3 = pmic_reg_read(dev, RK817_POWER_EN3);
134
135 value = (power_en0 & 0x0f) | ((power_en1 & 0x0f) << 4);
136 pmic_reg_write(dev, RK817_POWER_EN_SAVE0, value);
137 value = (power_en2 & 0x0f) | ((power_en3 & 0x0f) << 4);
138 pmic_reg_write(dev, RK817_POWER_EN_SAVE1, value);
139 break;
140 default:
141 printf("Unknown PMIC: RK%x!!\n", priv->variant);
142 return -EINVAL;
143 }
144
145 for (i = 0; i < init_data_num; i++) {
146 ret = pmic_clrsetbits(dev,
147 init_data[i].reg,
148 init_data[i].mask,
149 init_data[i].val);
150 if (ret < 0) {
151 printf("%s: i2c set reg 0x%x failed, ret=%d\n",
152 __func__, init_data[i].reg, ret);
153 }
154
155 debug("%s: reg[0x%x] = 0x%x\n", __func__, init_data[i].reg,
156 pmic_reg_read(dev, init_data[i].reg));
157 }
158
159 printf("PMIC: RK%x ", show_variant);
160
161 if (on_source && off_source)
162 printf("(on=0x%02x, off=0x%02x)",
163 pmic_reg_read(dev, on_source),
164 pmic_reg_read(dev, off_source));
165 printf("\n");
Jacob Chend77af8a2017-05-02 14:54:49 +0800166
167 return 0;
168}
169
Jacob Chen453c5a92017-05-02 14:54:52 +0800170static struct dm_pmic_ops rk8xx_ops = {
171 .reg_count = rk8xx_reg_count,
172 .read = rk8xx_read,
173 .write = rk8xx_write,
Simon Glass2a4febf2016-01-21 19:43:29 -0700174};
175
Jacob Chen453c5a92017-05-02 14:54:52 +0800176static const struct udevice_id rk8xx_ids[] = {
Elaine Zhangb6228072019-09-26 15:43:55 +0800177 { .compatible = "rockchip,rk805" },
Simon Glass2a4febf2016-01-21 19:43:29 -0700178 { .compatible = "rockchip,rk808" },
Joseph Chenee300682019-09-26 15:45:07 +0800179 { .compatible = "rockchip,rk809" },
Elaine Zhangaddd0622019-09-26 15:43:54 +0800180 { .compatible = "rockchip,rk816" },
Joseph Chenb4a35572019-09-26 15:44:55 +0800181 { .compatible = "rockchip,rk817" },
Jacob Chend77af8a2017-05-02 14:54:49 +0800182 { .compatible = "rockchip,rk818" },
Simon Glass2a4febf2016-01-21 19:43:29 -0700183 { }
184};
185
Walter Lozanoe3e24702020-06-25 01:10:04 -0300186U_BOOT_DRIVER(rockchip_rk805) = {
187 .name = "rockchip_rk805",
Simon Glass2a4febf2016-01-21 19:43:29 -0700188 .id = UCLASS_PMIC,
Jacob Chen453c5a92017-05-02 14:54:52 +0800189 .of_match = rk8xx_ids,
Simon Glass2a4febf2016-01-21 19:43:29 -0700190#if CONFIG_IS_ENABLED(PMIC_CHILDREN)
Jacob Chen453c5a92017-05-02 14:54:52 +0800191 .bind = rk8xx_bind,
Simon Glass2a4febf2016-01-21 19:43:29 -0700192#endif
Simon Glass41575d82020-12-03 16:55:17 -0700193 .priv_auto = sizeof(struct rk8xx_priv),
Jacob Chen453c5a92017-05-02 14:54:52 +0800194 .probe = rk8xx_probe,
195 .ops = &rk8xx_ops,
Simon Glass2a4febf2016-01-21 19:43:29 -0700196};
Walter Lozanoaddf3582020-06-25 01:10:06 -0300197
198U_BOOT_DRIVER_ALIAS(rockchip_rk805, rockchip_rk808)