Whitebox
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sun6i: Add basic axp221 driver

Browse Source 
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
master
Oliver Schinagl 12 years ago committed by Hans de Goede
parent 3b10e6eb68
commit 5c7f10fda3
5 changed files with 310 additions and 0 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 26
      board/sunxi/board.c
  2. 47
      drivers/power/Kconfig
  3. 1
      drivers/power/Makefile
  4. 186
      drivers/power/axp221.c
  5. 50
      include/axp221.h

26
board/sunxi/board.c
Unescape View File

@ -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>
@ -169,6 +172,29 @@ void sunxi_board_init(void)
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:");
ramsize = sunxi_dram_init();

47
drivers/power/Kconfig
Unescape View File

@ -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
Unescape View File

@ -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
Unescape View File

@ -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
Unescape View File

@ -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);
Write Preview
Loading…
Cancel
Save