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https://github.com/brain-hackers/u-boot-brain
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417ea635dc
In some cases U-Boot runs the same binary on different board versions. In wandboard, for example, there are versions with the PFUZE100 PMIC populated and others without it. When the PMIC is not present, it is not really useful to get PMIC error, so change the error message level to debug instead. Signed-off-by: Fabio Estevam <festevam@gmail.com> Tested-by: Heiko Schocher <hs@denx.de>
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2015 Freescale Semiconductor, Inc
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* Peng Fan <Peng.Fan@freescale.com>
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <errno.h>
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#include <dm.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/regulator.h>
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#include <power/pfuze100_pmic.h>
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#include <power/pfuze3000_pmic.h>
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static const struct pmic_child_info pmic_children_info[] = {
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/* sw[x], swbst */
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{ .prefix = "s", .driver = PFUZE100_REGULATOR_DRIVER },
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/* vgen[x], vsnvs, vcc, v33, vcc_sd */
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{ .prefix = "v", .driver = PFUZE100_REGULATOR_DRIVER },
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{ },
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};
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static int pfuze100_reg_count(struct udevice *dev)
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{
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return dev->driver_data == PFUZE3000 ? PFUZE3000_NUM_OF_REGS : PFUZE100_NUM_OF_REGS;
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}
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static int pfuze100_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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pr_err("write error to device: %p register: %#x!\n", 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 pfuze100_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!\n", 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 pfuze100_bind(struct udevice *dev)
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{
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ofnode regulators_node;
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int children;
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regulators_node = dev_read_subnode(dev, "regulators");
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if (!ofnode_valid(regulators_node)) {
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debug("%s: %s regulators subnode not found!\n", __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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static struct dm_pmic_ops pfuze100_ops = {
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.reg_count = pfuze100_reg_count,
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.read = pfuze100_read,
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.write = pfuze100_write,
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};
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static const struct udevice_id pfuze100_ids[] = {
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{ .compatible = "fsl,pfuze100", .data = PFUZE100, },
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{ .compatible = "fsl,pfuze200", .data = PFUZE200, },
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{ .compatible = "fsl,pfuze3000", .data = PFUZE3000, },
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{ }
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};
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U_BOOT_DRIVER(pmic_pfuze100) = {
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.name = "pfuze100 pmic",
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.id = UCLASS_PMIC,
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.of_match = pfuze100_ids,
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.bind = pfuze100_bind,
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.ops = &pfuze100_ops,
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};
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