mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 00:21:06 +00:00
830e161eb4
The sysreset uclass has an option to provide the do_poweroff() function. When that option is enabled, the AXP power drivers should not provide their own definition. For the AXP305, which is paired with 64-bit systems where TF-A provides PSCI, there is another possible conflict with the PSCI firmware driver. This driver can be enabled even if CONFIG_PSCI_RESET is disabled, so make sure to use the right symbol in the condition. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Andre Przywara <andre.przywara@arm.com> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* AXP305 driver
|
|
*
|
|
* (C) Copyright 2020 Jernej Skrabec <jernej.skrabec@siol.net>
|
|
*
|
|
* Based on axp221.c
|
|
* (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
|
|
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <errno.h>
|
|
#include <asm/arch/pmic_bus.h>
|
|
#include <axp_pmic.h>
|
|
|
|
#define AXP305_DCDC4_1600MV_OFFSET 46
|
|
|
|
static u8 axp305_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 axp_set_dcdc4(unsigned int mvolt)
|
|
{
|
|
int ret;
|
|
u8 cfg;
|
|
|
|
if (mvolt >= 1600)
|
|
cfg = AXP305_DCDC4_1600MV_OFFSET +
|
|
axp305_mvolt_to_cfg(mvolt, 1600, 3300, 100);
|
|
else
|
|
cfg = axp305_mvolt_to_cfg(mvolt, 600, 1500, 20);
|
|
|
|
if (mvolt == 0)
|
|
return pmic_bus_clrbits(AXP305_OUTPUT_CTRL1,
|
|
AXP305_OUTPUT_CTRL1_DCDCD_EN);
|
|
|
|
ret = pmic_bus_write(AXP305_DCDCD_VOLTAGE, cfg);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return pmic_bus_setbits(AXP305_OUTPUT_CTRL1,
|
|
AXP305_OUTPUT_CTRL1_DCDCD_EN);
|
|
}
|
|
|
|
int axp_init(void)
|
|
{
|
|
u8 axp_chip_id;
|
|
int ret;
|
|
|
|
ret = pmic_bus_init();
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = pmic_bus_read(AXP305_CHIP_VERSION, &axp_chip_id);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if ((axp_chip_id & AXP305_CHIP_VERSION_MASK) != 0x40)
|
|
return -ENODEV;
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if !CONFIG_IS_ENABLED(ARM_PSCI_FW) && !IS_ENABLED(CONFIG_SYSRESET_CMD_POWEROFF)
|
|
int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
|
{
|
|
pmic_bus_write(AXP305_SHUTDOWN, AXP305_POWEROFF);
|
|
|
|
/* infinite loop during shutdown */
|
|
while (1) {}
|
|
|
|
/* not reached */
|
|
return 0;
|
|
}
|
|
#endif
|