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https://github.com/AsahiLinux/u-boot
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5c7f10fda3
The A31 uses the AXP221 pmic for various voltages. Signed-off-by: Oliver Schinagl <oliver@schinagl.nl> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> -- Changes in v2: -Rebase Changes in v3: -Add support for all dldo and aldo-s -Add Kconfig option to select building AXP221 and to select voltage of dldo and aldo-s Changes in v4: -Add axp221_setbits helper function -Use symbolic names for enabled bits in CTRL1 - CTRL3 registers
186 lines
3.5 KiB
C
186 lines
3.5 KiB
C
/*
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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/p2wi.h>
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#include <axp221.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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static int axp221_setbits(u8 reg, u8 bits)
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{
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int ret;
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u8 val;
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ret = p2wi_read(reg, &val);
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if (ret)
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return ret;
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val |= bits;
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return p2wi_write(reg, val);
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}
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int axp221_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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ret = p2wi_write(AXP221_DCDC1_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DCDC1_EN);
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}
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int axp221_set_dcdc2(unsigned int mvolt)
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{
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
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return p2wi_write(AXP221_DCDC2_CTRL, cfg);
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}
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int axp221_set_dcdc3(unsigned int mvolt)
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{
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
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return p2wi_write(AXP221_DCDC3_CTRL, cfg);
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}
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int axp221_set_dcdc4(unsigned int mvolt)
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{
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
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return p2wi_write(AXP221_DCDC4_CTRL, cfg);
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}
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int axp221_set_dcdc5(unsigned int mvolt)
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{
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u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
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return p2wi_write(AXP221_DCDC5_CTRL, cfg);
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}
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int axp221_set_dldo1(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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ret = p2wi_write(AXP221_DLDO1_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO1_EN);
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}
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int axp221_set_dldo2(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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ret = p2wi_write(AXP221_DLDO2_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO2_EN);
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}
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int axp221_set_dldo3(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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ret = p2wi_write(AXP221_DLDO3_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO3_EN);
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}
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int axp221_set_dldo4(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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ret = p2wi_write(AXP221_DLDO4_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL2,
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AXP221_OUTPUT_CTRL2_DLDO4_EN);
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}
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int axp221_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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ret = p2wi_write(AXP221_ALDO1_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO1_EN);
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}
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int axp221_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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ret = p2wi_write(AXP221_ALDO2_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL1,
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AXP221_OUTPUT_CTRL1_ALDO2_EN);
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}
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int axp221_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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ret = p2wi_write(AXP221_ALDO3_CTRL, cfg);
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if (ret)
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return ret;
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return axp221_setbits(AXP221_OUTPUT_CTRL3,
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AXP221_OUTPUT_CTRL3_ALDO3_EN);
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}
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int axp221_init(void)
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{
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u8 axp_chip_id;
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int ret;
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p2wi_init();
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ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
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AXP221_INIT_DATA);
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if (ret)
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return ret;
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ret = p2wi_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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return 0;
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}
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