This Rockchip PMIC provides features suitable for battery-powered applications. It is commonly used with Rockchip SoCs. Add a driver which provides register access. The regulator driver will use this. Signed-off-by: Simon Glass <sjg@chromium.org>master
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/*
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* Copyright (C) 2015 Google, Inc |
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* Written by Simon Glass <sjg@chromium.org> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <errno.h> |
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#include <fdtdec.h> |
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#include <libfdt.h> |
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#include <power/rk808_pmic.h> |
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#include <power/pmic.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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static const struct pmic_child_info pmic_children_info[] = { |
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{ .prefix = "DCDC_REG", .driver = "rk808_buck"}, |
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{ .prefix = "LDO_REG", .driver = "rk808_ldo"}, |
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{ .prefix = "SWITCH_REG", .driver = "rk808_switch"}, |
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{ }, |
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}; |
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static int rk808_reg_count(struct udevice *dev) |
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{ |
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return RK808_NUM_OF_REGS; |
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} |
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static int rk808_write(struct udevice *dev, uint reg, const uint8_t *buff, |
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int len) |
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{ |
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if (dm_i2c_write(dev, reg, buff, len)) { |
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debug("write error to device: %p register: %#x!", dev, reg); |
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return -EIO; |
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} |
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return 0; |
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} |
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static int rk808_read(struct udevice *dev, uint reg, uint8_t *buff, int len) |
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{ |
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if (dm_i2c_read(dev, reg, buff, len)) { |
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debug("read error from device: %p register: %#x!", dev, reg); |
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return -EIO; |
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} |
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return 0; |
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} |
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#if CONFIG_IS_ENABLED(PMIC_CHILDREN) |
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static int rk808_bind(struct udevice *dev) |
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{ |
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const void *blob = gd->fdt_blob; |
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int regulators_node; |
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int children; |
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regulators_node = fdt_subnode_offset(blob, dev->of_offset, |
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"regulators"); |
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if (regulators_node <= 0) { |
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debug("%s: %s regulators subnode not found!", __func__, |
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dev->name); |
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return -ENXIO; |
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} |
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debug("%s: '%s' - found regulators subnode\n", __func__, dev->name); |
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children = pmic_bind_children(dev, regulators_node, pmic_children_info); |
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if (!children) |
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debug("%s: %s - no child found\n", __func__, dev->name); |
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/* Always return success for this device */ |
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return 0; |
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} |
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#endif |
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static struct dm_pmic_ops rk808_ops = { |
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.reg_count = rk808_reg_count, |
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.read = rk808_read, |
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.write = rk808_write, |
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}; |
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static const struct udevice_id rk808_ids[] = { |
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{ .compatible = "rockchip,rk808" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(pmic_rk808) = { |
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.name = "rk808 pmic", |
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.id = UCLASS_PMIC, |
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.of_match = rk808_ids, |
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#if CONFIG_IS_ENABLED(PMIC_CHILDREN) |
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.bind = rk808_bind, |
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#endif |
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.ops = &rk808_ops, |
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}; |
@ -0,0 +1,77 @@ |
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/*
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* Copyright (C) 2015 Google, Inc |
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* Written by Simon Glass <sjg@chromium.org> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef _PMIC_RK808_H_ |
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#define _PMIC_RK808_H_ |
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enum { |
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REG_DCDC_EN = 0x23, |
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REG_LDO_EN, |
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REG_SLEEP_SET_OFF1, |
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REG_SLEEP_SET_OFF2, |
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REG_DCDC_UV_STS, |
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REG_DCDC_UV_ACT, |
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REG_LDO_UV_STS, |
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REG_LDO_UV_ACT, |
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REG_DCDC_PG, |
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REG_LDO_PG, |
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REG_VOUT_MON_TDB, |
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REG_BUCK1_CONFIG, |
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REG_BUCK1_ON_VSEL, |
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REG_BUCK1_SLP_VSEL, |
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REG_BUCK1_DVS_VSEL, |
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REG_BUCK2_CONFIG, |
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REG_BUCK2_ON_VSEL, |
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REG_BUCK2_SLP_VSEL, |
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REG_BUCK2_DVS_VSEL, |
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REG_BUCK3_CONFIG, |
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REG_BUCK4_CONFIG, |
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REG_BUCK4_ON_VSEL, |
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REG_BUCK4_SLP_VSEL, |
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LDO1_ON_VSEL = 0x3b, |
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LDO1_SLP_VSEL, |
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LDO2_ON_VSEL, |
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LDO2_SLP_VSEL, |
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LDO3_ON_VSEL, |
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LDO3_SLP_VSEL, |
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LDO4_ON_VSEL, |
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LDO4_SLP_VSEL, |
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LDO5_ON_VSEL, |
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LDO5_SLP_VSEL, |
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LDO6_ON_VSEL, |
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LDO6_SLP_VSEL, |
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LDO7_ON_VSEL, |
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LDO7_SLP_VSEL, |
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LDO8_ON_VSEL, |
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LDO8_SLP_VSEL, |
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DEVCTRL, |
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INT_STS1, |
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INT_STS_MSK1, |
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INT_STS2, |
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INT_STS_MSK2, |
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IO_POL, |
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/* Not sure what this does */ |
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DCDC_ILMAX = 0x90, |
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RK808_NUM_OF_REGS, |
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}; |
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struct rk808_reg_table { |
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char *name; |
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u8 reg_ctl; |
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u8 reg_vol; |
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}; |
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int rk808_spl_configure_buck(struct udevice *pmic, int buck, int uvolt); |
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#endif |
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