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sun6i: Add basic axp221 driver

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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
This commit is contained in:
Oliver Schinagl 2013-07-26 12:56:58 +02:00 committed by Hans de Goede
parent 3b10e6eb68
commit 5c7f10fda3
5 changed files with 310 additions and 0 deletions
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26
board/sunxi/board.c
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@ -19,6 +19,9 @@
#ifdef CONFIG_AXP209_POWER
#include <axp209.h>
#endif
#ifdef CONFIG_AXP221_POWER
#include <axp221.h>
#endif
#include <asm/arch/clock.h>
#include <asm/arch/cpu.h>
#include <asm/arch/dram.h>
@ -168,6 +171,29 @@ void sunxi_board_init(void)
power_failed |= axp209_set_ldo2(3000);
power_failed |= axp209_set_ldo3(2800);
power_failed |= axp209_set_ldo4(2800);
#endif
#ifdef CONFIG_AXP221_POWER
power_failed = axp221_init();
power_failed |= axp221_set_dcdc1(3000);
power_failed |= axp221_set_dcdc2(1200);
power_failed |= axp221_set_dcdc3(1200);
power_failed |= axp221_set_dcdc4(1200);
power_failed |= axp221_set_dcdc5(1500);
#if CONFIG_AXP221_DLDO1_VOLT != -1
power_failed |= axp221_set_dldo1(CONFIG_AXP221_DLDO1_VOLT);
#endif
#if CONFIG_AXP221_DLDO4_VOLT != -1
power_failed |= axp221_set_dldo4(CONFIG_AXP221_DLDO4_VOLT);
#endif
#if CONFIG_AXP221_ALDO1_VOLT != -1
power_failed |= axp221_set_aldo1(CONFIG_AXP221_ALDO1_VOLT);
#endif
#if CONFIG_AXP221_ALDO2_VOLT != -1
power_failed |= axp221_set_aldo2(CONFIG_AXP221_ALDO2_VOLT);
#endif
#if CONFIG_AXP221_ALDO3_VOLT != -1
power_failed |= axp221_set_aldo3(CONFIG_AXP221_ALDO3_VOLT);
#endif
#endif
printf("DRAM:");

47
drivers/power/Kconfig
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@ -0,0 +1,47 @@
config AXP221_POWER
boolean "axp221 pmic support"
depends on MACH_SUN6I
default y
---help---
Say y here to enable support for the axp221 pmic found on most sun6i
(A31) boards.
config AXP221_DLDO1_VOLT
int "axp221 dldo1 voltage"
depends on AXP221_POWER
default -1
---help---
Set the voltage (mV) to program the axp221 dldo1 at, set to -1 to
disable dldo1.
config AXP221_DLDO4_VOLT
int "axp221 dldo4 voltage"
depends on AXP221_POWER
default -1
---help---
Set the voltage (mV) to program the axp221 dldo4 at, set to -1 to
disable dldo4.
config AXP221_ALDO1_VOLT
int "axp221 aldo1 voltage"
depends on AXP221_POWER
default -1
---help---
Set the voltage (mV) to program the axp221 aldo1 at, set to -1 to
disable aldo1.
config AXP221_ALDO2_VOLT
int "axp221 aldo2 voltage"
depends on AXP221_POWER
default -1
---help---
Set the voltage (mV) to program the axp221 aldo2 at, set to -1 to
disable aldo2.
config AXP221_ALDO3_VOLT
int "axp221 aldo3 voltage"
depends on AXP221_POWER
default -1
---help---
Set the voltage (mV) to program the axp221 aldo3 at, set to -1 to
disable aldo3.

1
drivers/power/Makefile
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@ -7,6 +7,7 @@
obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_AXP221_POWER) += axp221.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o
obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o

186
drivers/power/axp221.c Normal file
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@ -0,0 +1,186 @@
/*
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <asm/arch/p2wi.h>
#include <axp221.h>
static u8 axp221_mvolt_to_cfg(int mvolt, int min, int max, int div)
{
if (mvolt < min)
mvolt = min;
else if (mvolt > max)
mvolt = max;
return (mvolt - min) / div;
}
static int axp221_setbits(u8 reg, u8 bits)
{
int ret;
u8 val;
ret = p2wi_read(reg, &val);
if (ret)
return ret;
val |= bits;
return p2wi_write(reg, val);
}
int axp221_set_dcdc1(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100);
ret = p2wi_write(AXP221_DCDC1_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL2,
AXP221_OUTPUT_CTRL2_DCDC1_EN);
}
int axp221_set_dcdc2(unsigned int mvolt)
{
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
return p2wi_write(AXP221_DCDC2_CTRL, cfg);
}
int axp221_set_dcdc3(unsigned int mvolt)
{
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20);
return p2wi_write(AXP221_DCDC3_CTRL, cfg);
}
int axp221_set_dcdc4(unsigned int mvolt)
{
u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20);
return p2wi_write(AXP221_DCDC4_CTRL, cfg);
}
int axp221_set_dcdc5(unsigned int mvolt)
{
u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50);
return p2wi_write(AXP221_DCDC5_CTRL, cfg);
}
int axp221_set_dldo1(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_DLDO1_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL2,
AXP221_OUTPUT_CTRL2_DLDO1_EN);
}
int axp221_set_dldo2(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_DLDO2_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL2,
AXP221_OUTPUT_CTRL2_DLDO2_EN);
}
int axp221_set_dldo3(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_DLDO3_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL2,
AXP221_OUTPUT_CTRL2_DLDO3_EN);
}
int axp221_set_dldo4(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_DLDO4_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL2,
AXP221_OUTPUT_CTRL2_DLDO4_EN);
}
int axp221_set_aldo1(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_ALDO1_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL1,
AXP221_OUTPUT_CTRL1_ALDO1_EN);
}
int axp221_set_aldo2(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_ALDO2_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL1,
AXP221_OUTPUT_CTRL1_ALDO2_EN);
}
int axp221_set_aldo3(unsigned int mvolt)
{
int ret;
u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100);
ret = p2wi_write(AXP221_ALDO3_CTRL, cfg);
if (ret)
return ret;
return axp221_setbits(AXP221_OUTPUT_CTRL3,
AXP221_OUTPUT_CTRL3_ALDO3_EN);
}
int axp221_init(void)
{
u8 axp_chip_id;
int ret;
p2wi_init();
ret = p2wi_change_to_p2wi_mode(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR,
AXP221_INIT_DATA);
if (ret)
return ret;
ret = p2wi_read(AXP221_CHIP_ID, &axp_chip_id);
if (ret)
return ret;
if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
return -ENODEV;
return 0;
}

50
include/axp221.h Normal file
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@ -0,0 +1,50 @@
/*
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
*
* X-Powers AXP221 Power Management IC driver
*
* SPDX-License-Identifier: GPL-2.0+
*/
#define AXP221_CHIP_ADDR 0x68
#define AXP221_CTRL_ADDR 0x3e
#define AXP221_INIT_DATA 0x3e
#define AXP221_CHIP_ID 0x03
#define AXP221_OUTPUT_CTRL1 0x10
#define AXP221_OUTPUT_CTRL1_ALDO1_EN (1 << 6)
#define AXP221_OUTPUT_CTRL1_ALDO2_EN (1 << 7)
#define AXP221_OUTPUT_CTRL2 0x12
#define AXP221_OUTPUT_CTRL2_DLDO1_EN (1 << 3)
#define AXP221_OUTPUT_CTRL2_DLDO2_EN (1 << 4)
#define AXP221_OUTPUT_CTRL2_DLDO3_EN (1 << 5)
#define AXP221_OUTPUT_CTRL2_DLDO4_EN (1 << 6)
#define AXP221_OUTPUT_CTRL2_DCDC1_EN (1 << 7)
#define AXP221_OUTPUT_CTRL3 0x13
#define AXP221_OUTPUT_CTRL3_ALDO3_EN (1 << 7)
#define AXP221_DLDO1_CTRL 0x15
#define AXP221_DLDO2_CTRL 0x16
#define AXP221_DLDO3_CTRL 0x17
#define AXP221_DLDO4_CTRL 0x18
#define AXP221_DCDC1_CTRL 0x21
#define AXP221_DCDC2_CTRL 0x22
#define AXP221_DCDC3_CTRL 0x23
#define AXP221_DCDC4_CTRL 0x24
#define AXP221_DCDC5_CTRL 0x25
#define AXP221_ALDO1_CTRL 0x28
#define AXP221_ALDO2_CTRL 0x28
#define AXP221_ALDO3_CTRL 0x2a
int axp221_set_dcdc1(unsigned int mvolt);
int axp221_set_dcdc2(unsigned int mvolt);
int axp221_set_dcdc3(unsigned int mvolt);
int axp221_set_dcdc4(unsigned int mvolt);
int axp221_set_dcdc5(unsigned int mvolt);
int axp221_set_dldo1(unsigned int mvolt);
int axp221_set_dldo2(unsigned int mvolt);
int axp221_set_dldo3(unsigned int mvolt);
int axp221_set_dldo4(unsigned int mvolt);
int axp221_set_aldo1(unsigned int mvolt);
int axp221_set_aldo2(unsigned int mvolt);
int axp221_set_aldo3(unsigned int mvolt);
int axp221_init(void);