2 * Copyright (C) 2015 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * Based on Rockchip's drivers/power/pmic/pmic_rk808.c:
6 * Copyright (C) 2012 rockchips
7 * zyw <zyw@rock-chips.com>
9 * SPDX-License-Identifier: GPL-2.0+
15 #include <power/rk8xx_pmic.h>
16 #include <power/pmic.h>
17 #include <power/regulator.h>
19 #ifndef CONFIG_SPL_BUILD
23 /* Field Definitions */
24 #define RK808_BUCK_VSEL_MASK 0x3f
25 #define RK808_BUCK4_VSEL_MASK 0xf
26 #define RK808_LDO_VSEL_MASK 0x1f
28 #define RK818_BUCK_VSEL_MASK 0x3f
29 #define RK818_BUCK4_VSEL_MASK 0x1f
30 #define RK818_LDO_VSEL_MASK 0x1f
31 #define RK818_LDO3_ON_VSEL_MASK 0xf
32 #define RK818_BOOST_ON_VSEL_MASK 0xe0
33 #define RK818_USB_ILIM_SEL_MASK 0x0f
34 #define RK818_USB_CHG_SD_VSEL_MASK 0x70
37 struct rk8xx_reg_info {
44 static const struct rk8xx_reg_info rk808_buck[] = {
45 { 712500, 12500, REG_BUCK1_ON_VSEL, RK808_BUCK_VSEL_MASK, },
46 { 712500, 12500, REG_BUCK2_ON_VSEL, RK808_BUCK_VSEL_MASK, },
47 { 712500, 12500, -1, RK808_BUCK_VSEL_MASK, },
48 { 1800000, 100000, REG_BUCK4_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
51 static const struct rk8xx_reg_info rk818_buck[] = {
52 { 712500, 12500, REG_BUCK1_ON_VSEL, RK818_BUCK_VSEL_MASK, },
53 { 712500, 12500, REG_BUCK2_ON_VSEL, RK818_BUCK_VSEL_MASK, },
54 { 712500, 12500, -1, RK818_BUCK_VSEL_MASK, },
55 { 1800000, 100000, REG_BUCK4_ON_VSEL, RK818_BUCK4_VSEL_MASK, },
59 static const struct rk8xx_reg_info rk808_ldo[] = {
60 { 1800000, 100000, REG_LDO1_ON_VSEL, RK808_LDO_VSEL_MASK, },
61 { 1800000, 100000, REG_LDO2_ON_VSEL, RK808_LDO_VSEL_MASK, },
62 { 800000, 100000, REG_LDO3_ON_VSEL, RK808_BUCK4_VSEL_MASK, },
63 { 1800000, 100000, REG_LDO4_ON_VSEL, RK808_LDO_VSEL_MASK, },
64 { 1800000, 100000, REG_LDO5_ON_VSEL, RK808_LDO_VSEL_MASK, },
65 { 800000, 100000, REG_LDO6_ON_VSEL, RK808_LDO_VSEL_MASK, },
66 { 800000, 100000, REG_LDO7_ON_VSEL, RK808_LDO_VSEL_MASK, },
67 { 1800000, 100000, REG_LDO8_ON_VSEL, RK808_LDO_VSEL_MASK, },
70 static const struct rk8xx_reg_info rk818_ldo[] = {
71 { 1800000, 100000, REG_LDO1_ON_VSEL, RK818_LDO_VSEL_MASK, },
72 { 1800000, 100000, REG_LDO2_ON_VSEL, RK818_LDO_VSEL_MASK, },
73 { 800000, 100000, REG_LDO3_ON_VSEL, RK818_LDO3_ON_VSEL_MASK, },
74 { 1800000, 100000, REG_LDO4_ON_VSEL, RK818_LDO_VSEL_MASK, },
75 { 1800000, 100000, REG_LDO5_ON_VSEL, RK818_LDO_VSEL_MASK, },
76 { 800000, 100000, REG_LDO6_ON_VSEL, RK818_LDO_VSEL_MASK, },
77 { 800000, 100000, REG_LDO7_ON_VSEL, RK818_LDO_VSEL_MASK, },
78 { 1800000, 100000, REG_LDO8_ON_VSEL, RK818_LDO_VSEL_MASK, },
82 static const u16 rk818_chrg_cur_input_array[] = {
83 450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000
86 static const uint rk818_chrg_shutdown_vsel_array[] = {
87 2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000
90 static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic,
93 struct rk8xx_priv *priv = dev_get_priv(pmic);
94 switch (priv->variant) {
96 return &rk818_buck[num];
98 return &rk808_buck[num];
102 static int _buck_set_value(struct udevice *pmic, int buck, int uvolt)
104 const struct rk8xx_reg_info *info = get_buck_reg(pmic, buck - 1);
105 int mask = info->vsel_mask;
108 if (info->vsel_reg == -1)
110 val = (uvolt - info->min_uv) / info->step_uv;
111 debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
114 return pmic_clrsetbits(pmic, info->vsel_reg, mask, val);
117 static int _buck_set_enable(struct udevice *pmic, int buck, bool enable)
125 ret = pmic_clrsetbits(pmic, REG_DCDC_ILMAX, 0, 3 << (buck * 2));
128 ret = pmic_clrsetbits(pmic, REG_DCDC_UV_ACT, 1 << buck, 0);
133 return pmic_clrsetbits(pmic, REG_DCDC_EN, mask, enable ? mask : 0);
137 static const struct rk8xx_reg_info *get_ldo_reg(struct udevice *pmic,
140 struct rk8xx_priv *priv = dev_get_priv(pmic);
141 switch (priv->variant) {
143 return &rk818_ldo[num];
145 return &rk808_ldo[num];
149 static int buck_get_value(struct udevice *dev)
151 int buck = dev->driver_data - 1;
152 const struct rk8xx_reg_info *info = get_buck_reg(dev->parent, buck);
153 int mask = info->vsel_mask;
156 if (info->vsel_reg == -1)
158 ret = pmic_reg_read(dev->parent, info->vsel_reg);
163 return info->min_uv + val * info->step_uv;
166 static int buck_set_value(struct udevice *dev, int uvolt)
168 int buck = dev->driver_data;
170 return _buck_set_value(dev->parent, buck, uvolt);
173 static int buck_set_enable(struct udevice *dev, bool enable)
175 int buck = dev->driver_data;
177 return _buck_set_enable(dev->parent, buck, enable);
180 static bool buck_get_enable(struct udevice *dev)
182 int buck = dev->driver_data - 1;
188 ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
192 return ret & mask ? true : false;
195 static int ldo_get_value(struct udevice *dev)
197 int ldo = dev->driver_data - 1;
198 const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
199 int mask = info->vsel_mask;
202 if (info->vsel_reg == -1)
204 ret = pmic_reg_read(dev->parent, info->vsel_reg);
209 return info->min_uv + val * info->step_uv;
212 static int ldo_set_value(struct udevice *dev, int uvolt)
214 int ldo = dev->driver_data - 1;
215 const struct rk8xx_reg_info *info = get_ldo_reg(dev->parent, ldo);
216 int mask = info->vsel_mask;
219 if (info->vsel_reg == -1)
221 val = (uvolt - info->min_uv) / info->step_uv;
222 debug("%s: reg=%x, mask=%x, val=%x\n", __func__, info->vsel_reg, mask,
225 return pmic_clrsetbits(dev->parent, info->vsel_reg, mask, val);
228 static int ldo_set_enable(struct udevice *dev, bool enable)
230 int ldo = dev->driver_data - 1;
235 return pmic_clrsetbits(dev->parent, REG_LDO_EN, mask,
239 static bool ldo_get_enable(struct udevice *dev)
241 int ldo = dev->driver_data - 1;
247 ret = pmic_reg_read(dev->parent, REG_LDO_EN);
251 return ret & mask ? true : false;
254 static int switch_set_enable(struct udevice *dev, bool enable)
256 int sw = dev->driver_data - 1;
259 mask = 1 << (sw + 5);
261 return pmic_clrsetbits(dev->parent, REG_DCDC_EN, mask,
265 static bool switch_get_enable(struct udevice *dev)
267 int sw = dev->driver_data - 1;
271 mask = 1 << (sw + 5);
273 ret = pmic_reg_read(dev->parent, REG_DCDC_EN);
277 return ret & mask ? true : false;
280 static int rk8xx_buck_probe(struct udevice *dev)
282 struct dm_regulator_uclass_platdata *uc_pdata;
284 uc_pdata = dev_get_uclass_platdata(dev);
286 uc_pdata->type = REGULATOR_TYPE_BUCK;
287 uc_pdata->mode_count = 0;
292 static int rk8xx_ldo_probe(struct udevice *dev)
294 struct dm_regulator_uclass_platdata *uc_pdata;
296 uc_pdata = dev_get_uclass_platdata(dev);
298 uc_pdata->type = REGULATOR_TYPE_LDO;
299 uc_pdata->mode_count = 0;
304 static int rk8xx_switch_probe(struct udevice *dev)
306 struct dm_regulator_uclass_platdata *uc_pdata;
308 uc_pdata = dev_get_uclass_platdata(dev);
310 uc_pdata->type = REGULATOR_TYPE_FIXED;
311 uc_pdata->mode_count = 0;
316 static const struct dm_regulator_ops rk8xx_buck_ops = {
317 .get_value = buck_get_value,
318 .set_value = buck_set_value,
319 .get_enable = buck_get_enable,
320 .set_enable = buck_set_enable,
323 static const struct dm_regulator_ops rk8xx_ldo_ops = {
324 .get_value = ldo_get_value,
325 .set_value = ldo_set_value,
326 .get_enable = ldo_get_enable,
327 .set_enable = ldo_set_enable,
330 static const struct dm_regulator_ops rk8xx_switch_ops = {
331 .get_enable = switch_get_enable,
332 .set_enable = switch_set_enable,
335 U_BOOT_DRIVER(rk8xx_buck) = {
336 .name = "rk8xx_buck",
337 .id = UCLASS_REGULATOR,
338 .ops = &rk8xx_buck_ops,
339 .probe = rk8xx_buck_probe,
342 U_BOOT_DRIVER(rk8xx_ldo) = {
344 .id = UCLASS_REGULATOR,
345 .ops = &rk8xx_ldo_ops,
346 .probe = rk8xx_ldo_probe,
349 U_BOOT_DRIVER(rk8xx_switch) = {
350 .name = "rk8xx_switch",
351 .id = UCLASS_REGULATOR,
352 .ops = &rk8xx_switch_ops,
353 .probe = rk8xx_switch_probe,
357 int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt)
361 ret = _buck_set_value(pmic, buck, uvolt);
365 return _buck_set_enable(pmic, buck, true);
368 int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma)
372 for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++)
373 if (current_ma <= rk818_chrg_cur_input_array[i])
376 return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i);
379 int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt)
383 for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++)
384 if (uvolt <= rk818_chrg_shutdown_vsel_array[i])
387 return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK,