upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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132 lines
2.5 KiB
132 lines
2.5 KiB
/*
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* AXP818 driver based on AXP221 driver
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*
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*
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* (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com>
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*
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* Based on axp221.c
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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 <errno.h>
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#include <asm/arch/gpio.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 axp818_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 = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC1_EN);
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ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_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;
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if (mvolt >= 1220)
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cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC2_EN);
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ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_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;
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if (mvolt >= 1220)
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cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC3_EN);
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ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC3_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;
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if (mvolt >= 1140)
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cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
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else
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cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
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if (mvolt == 0)
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return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC5_EN);
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ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
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if (ret)
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return ret;
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return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
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AXP818_OUTPUT_CTRL1_DCDC5_EN);
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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(AXP818_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 == 0x51))
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return -ENODEV;
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else
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return ret;
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return 0;
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}
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