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sunxi: Add axp209 pmic support

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Add support for the x-powers axp209 pmic which is found on most A10, A13 and
A20 boards.

And enable AXP209 support for the Cubietruck and Cubieboard boards.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Henrik Nordstrom 2014-06-13 22:55:50 +02:00 committed by Ian Campbell
parent 6620377e4b
commit 14bc66bd9a
9 changed files with 215 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
board/sunxi/board.c
View file

@ -12,6 +12,9 @@
*/
#include <common.h>
#ifdef CONFIG_AXP209_POWER
#include <axp209.h>
#endif
#include <asm/arch/clock.h>
#include <asm/arch/dram.h>
#include <asm/arch/gpio.h>
@ -116,12 +119,31 @@ void i2c_init_board(void)
#ifdef CONFIG_SPL_BUILD
void sunxi_board_init(void)
{
int power_failed = 0;
unsigned long ramsize;
#ifdef CONFIG_AXP209_POWER
power_failed |= axp209_init();
power_failed |= axp209_set_dcdc2(1400);
power_failed |= axp209_set_dcdc3(1250);
power_failed |= axp209_set_ldo2(3000);
power_failed |= axp209_set_ldo3(2800);
power_failed |= axp209_set_ldo4(2800);
#endif
printf("DRAM:");
ramsize = sunxi_dram_init();
printf(" %lu MiB\n", ramsize >> 20);
if (!ramsize)
hang();
/*
* Only clock up the CPU to full speed if we are reasonably
* assured it's being powered with suitable core voltage
*/
if (!power_failed)
clock_set_pll1(CONFIG_CLK_FULL_SPEED);
else
printf("Failed to set core voltage! Can't set CPU frequency\n");
}
#endif

6
boards.cfg
View file

@ -378,9 +378,9 @@ Active arm armv7 s5pc1xx samsung goni
Active arm armv7 s5pc1xx samsung smdkc100 smdkc100 - Minkyu Kang <mk7.kang@samsung.com>
Active arm armv7 socfpga altera socfpga socfpga_cyclone5 - -
Active arm armv7 sunxi - sunxi A13-OLinuXinoM sun5i:A13_OLINUXINOM,SPL,CONS_INDEX=2 Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi Cubieboard sun4i:CUBIEBOARD,SPL,SUNXI_EMAC Hans de Goede <hdegoede@redhat.com>
Active arm armv7 sunxi - sunxi Cubietruck sun7i:CUBIETRUCK,SPL,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,SUNXI_GMAC,RGMII Ian Campbell <ijc@hellion.org.uk>:Hans de Goede <hdegoede@redhat.com>
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 u8500 st-ericsson snowball snowball - Mathieu Poirier <mathieu.poirier@linaro.org>
Active arm armv7 u8500 st-ericsson u8500 u8500_href - -

1
drivers/power/Makefile
View file

@ -5,6 +5,7 @@
# SPDX-License-Identifier: GPL-2.0+
#
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o
obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o

167
drivers/power/axp209.c Normal file
View file

@ -0,0 +1,167 @@
/*
* (C) Copyright 2012
* Henrik Nordstrom <henrik@henriknordstrom.net>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <i2c.h>
#include <axp209.h>
enum axp209_reg {
AXP209_POWER_STATUS = 0x00,
AXP209_CHIP_VERSION = 0x03,
AXP209_DCDC2_VOLTAGE = 0x23,
AXP209_DCDC3_VOLTAGE = 0x27,
AXP209_LDO24_VOLTAGE = 0x28,
AXP209_LDO3_VOLTAGE = 0x29,
AXP209_IRQ_STATUS5 = 0x4c,
AXP209_SHUTDOWN = 0x32,
};
#define AXP209_POWER_STATUS_ON_BY_DC (1 << 0)
#define AXP209_IRQ5_PEK_UP (1 << 6)
#define AXP209_IRQ5_PEK_DOWN (1 << 5)
#define AXP209_POWEROFF (1 << 7)
static int axp209_write(enum axp209_reg reg, u8 val)
{
return i2c_write(0x34, reg, 1, &val, 1);
}
static int axp209_read(enum axp209_reg reg, u8 *val)
{
return i2c_read(0x34, reg, 1, val, 1);
}
static u8 axp209_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;
}
int axp209_set_dcdc2(int mvolt)
{
int rc;
u8 cfg, current;
cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
/* Do we really need to be this gentle? It has built-in voltage slope */
while ((rc = axp209_read(AXP209_DCDC2_VOLTAGE, &current)) == 0 &&
current != cfg) {
if (current < cfg)
current++;
else
current--;
rc = axp209_write(AXP209_DCDC2_VOLTAGE, current);
if (rc)
break;
}
return rc;
}
int axp209_set_dcdc3(int mvolt)
{
u8 cfg = axp209_mvolt_to_cfg(mvolt, 700, 3500, 25);
return axp209_write(AXP209_DCDC3_VOLTAGE, cfg);
}
int axp209_set_ldo2(int mvolt)
{
int rc;
u8 cfg, reg;
cfg = axp209_mvolt_to_cfg(mvolt, 1800, 3300, 100);
rc = axp209_read(AXP209_LDO24_VOLTAGE, &reg);
if (rc)
return rc;
/* LDO2 configuration is in upper 4 bits */
reg = (reg & 0x0f) | (cfg << 4);
return axp209_write(AXP209_LDO24_VOLTAGE, reg);
}
int axp209_set_ldo3(int mvolt)
{
u8 cfg;
if (mvolt == -1)
cfg = 0x80; /* determined by LDO3IN pin */
else
cfg = axp209_mvolt_to_cfg(mvolt, 700, 2275, 25);
return axp209_write(AXP209_LDO3_VOLTAGE, cfg);
}
int axp209_set_ldo4(int mvolt)
{
int rc;
static const int vindex[] = {
1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000, 2500,
2700, 2800, 3000, 3100, 3200, 3300
};
u8 cfg, reg;
/* Translate mvolt to register cfg value, requested <= selected */
for (cfg = 15; vindex[cfg] > mvolt && cfg > 0; cfg--);
rc = axp209_read(AXP209_LDO24_VOLTAGE, &reg);
if (rc)
return rc;
/* LDO4 configuration is in lower 4 bits */
reg = (reg & 0xf0) | (cfg << 0);
return axp209_write(AXP209_LDO24_VOLTAGE, reg);
}
int axp209_init(void)
{
u8 ver;
int rc;
rc = axp209_read(AXP209_CHIP_VERSION, &ver);
if (rc)
return rc;
/* Low 4 bits is chip version */
ver &= 0x0f;
if (ver != 0x1)
return -1;
return 0;
}
int axp209_poweron_by_dc(void)
{
u8 v;
if (axp209_read(AXP209_POWER_STATUS, &v))
return 0;
return (v & AXP209_POWER_STATUS_ON_BY_DC);
}
int axp209_power_button(void)
{
u8 v;
if (axp209_read(AXP209_IRQ_STATUS5, &v))
return 0;
axp209_write(AXP209_IRQ_STATUS5, AXP209_IRQ5_PEK_DOWN);
return v & AXP209_IRQ5_PEK_DOWN;
}

14
include/axp209.h Normal file
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@ -0,0 +1,14 @@
/*
* (C) Copyright 2012 Henrik Nordstrom <henrik@henriknordstrom.net>
*
* SPDX-License-Identifier: GPL-2.0+
*/
extern int axp209_set_dcdc2(int mvolt);
extern int axp209_set_dcdc3(int mvolt);
extern int axp209_set_ldo2(int mvolt);
extern int axp209_set_ldo3(int mvolt);
extern int axp209_set_ldo4(int mvolt);
extern int axp209_init(void);
extern int axp209_poweron_by_dc(void);
extern int axp209_power_button(void);

1
include/configs/sun4i.h
View file

@ -12,6 +12,7 @@
* A10 specific configuration
*/
#define CONFIG_SUN4I /* sun4i SoC generation */
#define CONFIG_CLK_FULL_SPEED 1008000000
#define CONFIG_SYS_PROMPT "sun4i# "

1
include/configs/sun5i.h
View file

@ -12,6 +12,7 @@
* High Level Configuration Options
*/
#define CONFIG_SUN5I /* sun5i SoC generation */
#define CONFIG_CLK_FULL_SPEED 1008000000
#define CONFIG_SYS_PROMPT "sun5i# "

1
include/configs/sun7i.h
View file

@ -13,6 +13,7 @@
* A20 specific configuration
*/
#define CONFIG_SUN7I /* sun7i SoC generation */
#define CONFIG_CLK_FULL_SPEED 912000000
#define CONFIG_SYS_PROMPT "sun7i# "

5
include/configs/sunxi-common.h
View file

@ -169,6 +169,11 @@
#define CONFIG_SYS_I2C_SLAVE 0x7f
#define CONFIG_CMD_I2C
/* PMU */
#if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER || defined CONFIG_AXP221_POWER
#define CONFIG_SPL_POWER_SUPPORT
#endif
#ifndef CONFIG_CONS_INDEX
#define CONFIG_CONS_INDEX 1 /* UART0 */
#endif