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ARM: pxa: magician: Add support for MAX1587A Vcore regulator 

HTC Magician contains a MAX1587A voltage regulator for a Vcore supply.
The Vcore regulation is required for a CPU speed switching. This patch adds
declaration for the max1586 driver.

Notice:

- MAX1587A version does not support the V6 (USIM) output.
- A boost resistor was directly measured for a board_id 0x3a.

Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
This commit is contained in:
Petr Cvek 2015-09-28 23:39:03 +02:00 committed by Robert Jarzmik
parent f36150b179
commit ff5eff35c1
1 changed files with 52 additions and 0 deletions
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52
arch/arm/mach-pxa/magician.c
View File

@ -45,6 +45,8 @@
#include <linux/platform_data/irda-pxaficp.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/regulator/max1586.h>
#include "devices.h"
#include "generic.h"
@ -696,6 +698,52 @@ static struct platform_device bq24022 = {
},
};
/*
* Vcore regulator MAX1587A
*/
static struct regulator_consumer_supply magician_max1587a_consumers[] = {
REGULATOR_SUPPLY("vcc_core", NULL),
};
static struct regulator_init_data magician_max1587a_v3_info = {
.constraints = {
.name = "vcc_core range",
.min_uV = 700000,
.max_uV = 1475000,
.always_on = 1,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
},
.consumer_supplies = magician_max1587a_consumers,
.num_consumer_supplies = ARRAY_SIZE(magician_max1587a_consumers),
};
static struct max1586_subdev_data magician_max1587a_subdevs[] = {
{
.name = "vcc_core",
.id = MAX1586_V3,
.platform_data = &magician_max1587a_v3_info,
}
};
static struct max1586_platform_data magician_max1587a_info = {
.subdevs = magician_max1587a_subdevs,
.num_subdevs = ARRAY_SIZE(magician_max1587a_subdevs),
/*
* NOTICE measured directly on the PCB (board_id == 0x3a), but
* if R24 is present, it will boost the voltage
* (write 1.475V, get 1.645V and smoke)
*/
.v3_gain = MAX1586_GAIN_NO_R24,
};
static struct i2c_board_info magician_pwr_i2c_board_info[] __initdata = {
{
I2C_BOARD_INFO("max1586", 0x14),
.platform_data = &magician_max1587a_info,
},
};
/*
* MMC/SD
*/
@ -872,6 +920,10 @@ static void __init magician_init(void)
pxa_set_ficp_info(&magician_ficp_info);
pxa27x_set_i2c_power_info(&magician_i2c_power_info);
pxa_set_i2c_info(&i2c_info);
i2c_register_board_info(1,
ARRAY_AND_SIZE(magician_pwr_i2c_board_info));
pxa_set_mci_info(&magician_mci_info);
pxa_set_ohci_info(&magician_ohci_info);