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https://github.com/brain-hackers/u-boot-brain
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![Hans de Goede](/assets/img/avatar_default.png)
When cold-booting the ldoio0/1 regulators are always off / the gpios are always at tristate. But when re-booting from android these are sometimes on. Disable them at axp_init time (iow as early as possible) to remove this difference between a cold boot and a reboot. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
278 lines
5.6 KiB
C
278 lines
5.6 KiB
C
/*
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* AXP221 and AXP223 driver
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*
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* IMPORTANT when making changes to this file check that the registers
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* used are the same for the axp221 and axp223.
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*
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* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
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* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
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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 <command.h>
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#include <errno.h>
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#include <asm/arch/pmic_bus.h>
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#include <axp_pmic.h>
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static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div)
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{
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if (mvolt < min)
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mvolt = min;
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else if (mvolt > max)
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mvolt = max;
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return (mvolt - min) / div;
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}
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int axp_set_dcdc1(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC1_EN);
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ret = pmic_bus_write(AXP221_DCDC1_CTRL, cfg);
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if (ret)
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return ret;
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ret = pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DCDC1SW_EN);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC1_EN);
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}
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int axp_set_dcdc2(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC2_EN);
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ret = pmic_bus_write(AXP221_DCDC2_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC2_EN);
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}
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int axp_set_dcdc3(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC3_EN);
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ret = pmic_bus_write(AXP221_DCDC3_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC3_EN);
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}
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int axp_set_dcdc4(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC4_EN);
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ret = pmic_bus_write(AXP221_DCDC4_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC4_EN);
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}
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int axp_set_dcdc5(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC5_EN);
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ret = pmic_bus_write(AXP221_DCDC5_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_DCDC5_EN);
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}
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int axp_set_aldo1(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO1_EN);
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ret = pmic_bus_write(AXP221_ALDO1_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO1_EN);
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}
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int axp_set_aldo2(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO2_EN);
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ret = pmic_bus_write(AXP221_ALDO2_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO2_EN);
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}
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int axp_set_aldo3(unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL3,
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AXP221_OUTPUT_CTRL3_ALDO3_EN);
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ret = pmic_bus_write(AXP221_ALDO3_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL3,
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AXP221_OUTPUT_CTRL3_ALDO3_EN);
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}
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int axp_set_dldo(int dldo_num, unsigned int mvolt)
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{
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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int ret;
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if (dldo_num < 1 || dldo_num > 4)
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return -EINVAL;
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
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ret = pmic_bus_write(AXP221_DLDO1_CTRL + (dldo_num - 1), cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO1_EN << (dldo_num - 1));
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}
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int axp_set_eldo(int eldo_num, unsigned int mvolt)
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{
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int ret;
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
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if (eldo_num < 1 || eldo_num > 3)
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return -EINVAL;
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
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ret = pmic_bus_write(AXP221_ELDO1_CTRL + (eldo_num - 1), cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_ELDO1_EN << (eldo_num - 1));
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}
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int axp_init(void)
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{
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u8 axp_chip_id;
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int ret;
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ret = pmic_bus_init();
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if (ret)
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return ret;
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ret = pmic_bus_read(AXP221_CHIP_ID, &axp_chip_id);
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if (ret)
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return ret;
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if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
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return -ENODEV;
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/*
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* Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
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* from android these are sometimes on.
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*/
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ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
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if (ret)
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return ret;
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ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
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if (ret)
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return ret;
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return 0;
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}
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int axp_get_sid(unsigned int *sid)
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{
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u8 *dest = (u8 *)sid;
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int i, ret;
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ret = pmic_bus_init();
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if (ret)
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return ret;
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ret = pmic_bus_write(AXP221_PAGE, 1);
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if (ret)
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return ret;
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for (i = 0; i < 16; i++) {
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ret = pmic_bus_read(AXP221_SID + i, &dest[i]);
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if (ret)
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return ret;
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}
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pmic_bus_write(AXP221_PAGE, 0);
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for (i = 0; i < 4; i++)
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sid[i] = be32_to_cpu(sid[i]);
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return 0;
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}
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int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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pmic_bus_write(AXP221_SHUTDOWN, AXP221_SHUTDOWN_POWEROFF);
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/* infinite loop during shutdown */
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while (1) {}
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/* not reached */
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return 0;
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}
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