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sunxi: Add axp152 pmic support

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Add support for the x-powers axp152 pmic which is found on most A10s boards
and enable it for the r7-tv-dongle board.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2014-06-13 22:55:51 +02:00 committed by Ian Campbell
parent 14bc66bd9a
commit 2428920835
5 changed files with 119 additions and 1 deletions
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10
board/sunxi/board.c
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@ -12,6 +12,9 @@
*/
#include <common.h>
#ifdef CONFIG_AXP152_POWER
#include <axp152.h>
#endif
#ifdef CONFIG_AXP209_POWER
#include <axp209.h>
#endif
@ -122,6 +125,13 @@ void sunxi_board_init(void)
int power_failed = 0;
unsigned long ramsize;
#ifdef CONFIG_AXP152_POWER
power_failed = axp152_init();
power_failed |= axp152_set_dcdc2(1400);
power_failed |= axp152_set_dcdc3(1500);
power_failed |= axp152_set_dcdc4(1250);
power_failed |= axp152_set_ldo2(3000);
#endif
#ifdef CONFIG_AXP209_POWER
power_failed |= axp209_init();
power_failed |= axp209_set_dcdc2(1400);

2
boards.cfg
View File

@ -381,7 +381,7 @@ Active arm armv7 sunxi - sunxi
Active arm armv7 sunxi - sunxi Cubieboard sun4i:CUBIEBOARD,SPL,AXP209_POWER,SUNXI_EMAC Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL,AXP209_POWER,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi Cubietruck_FEL sun7i:CUBIETRUCK,SPL_FEL,AXP209_POWER,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi r7-tv-dongle sun5i:R7DONGLE,SPL Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi r7-tv-dongle sun5i:R7DONGLE,SPL,AXP152_POWER Hans de Goede <hdegoede@redhat.com>
Active arm armv7 u8500 st-ericsson snowball snowball - Mathieu Poirier <mathieu.poirier@linaro.org>
Active arm armv7 u8500 st-ericsson u8500 u8500_href - -
Active arm armv7 vf610 freescale vf610twr vf610twr vf610twr:IMX_CONFIG=board/freescale/vf610twr/imximage.cfg Alison Wang <b18965@freescale.com>

1
drivers/power/Makefile
View File

@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o

97
drivers/power/axp152.c Normal file
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@ -0,0 +1,97 @@
/*
* (C) Copyright 2012
* Henrik Nordstrom <henrik@henriknordstrom.net>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <axp152.h>
enum axp152_reg {
AXP152_CHIP_VERSION = 0x3,
AXP152_DCDC2_VOLTAGE = 0x23,
AXP152_DCDC3_VOLTAGE = 0x27,
AXP152_DCDC4_VOLTAGE = 0x2B,
AXP152_LDO2_VOLTAGE = 0x2A,
AXP152_SHUTDOWN = 0x32,
};
#define AXP152_POWEROFF (1 << 7)
static int axp152_write(enum axp152_reg reg, u8 val)
{
return i2c_write(0x30, reg, 1, &val, 1);
}
static int axp152_read(enum axp152_reg reg, u8 *val)
{
return i2c_read(0x30, reg, 1, val, 1);
}
static u8 axp152_mvolt_to_target(int mvolt, int min, int max, int div)
{
if (mvolt < min)
mvolt = min;
else if (mvolt > max)
mvolt = max;
return (mvolt - min) / div;
}
int axp152_set_dcdc2(int mvolt)
{
int rc;
u8 current, target;
target = axp152_mvolt_to_target(mvolt, 700, 2275, 25);
/* Do we really need to be this gentle? It has built-in voltage slope */
while ((rc = axp152_read(AXP152_DCDC2_VOLTAGE, &current)) == 0 &&
current != target) {
if (current < target)
current++;
else
current--;
rc = axp152_write(AXP152_DCDC2_VOLTAGE, current);
if (rc)
break;
}
return rc;
}
int axp152_set_dcdc3(int mvolt)
{
u8 target = axp152_mvolt_to_target(mvolt, 700, 3500, 25);
return axp152_write(AXP152_DCDC3_VOLTAGE, target);
}
int axp152_set_dcdc4(int mvolt)
{
u8 target = axp152_mvolt_to_target(mvolt, 700, 3500, 25);
return axp152_write(AXP152_DCDC4_VOLTAGE, target);
}
int axp152_set_ldo2(int mvolt)
{
u8 target = axp152_mvolt_to_target(mvolt, 700, 3500, 100);
return axp152_write(AXP152_LDO2_VOLTAGE, target);
}
int axp152_init(void)
{
u8 ver;
int rc;
rc = axp152_read(AXP152_CHIP_VERSION, &ver);
if (rc)
return rc;
if (ver != 0x05)
return -1;
return 0;
}

10
include/axp152.h Normal file
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@ -0,0 +1,10 @@
/*
* (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net>
*
* SPDX-License-Identifier: GPL-2.0+
*/
int axp152_set_dcdc2(int mvolt);
int axp152_set_dcdc3(int mvolt);
int axp152_set_dcdc4(int mvolt);
int axp152_set_ldo2(int mvolt);
int axp152_init(void);