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Disable automatic power-on circuitry when starting

utp
Martin T. H. Sandsmark 2016-12-04 19:32:30 +01:00
parent 60e1615193
commit 3a42eb901b
2 changed files with 12 additions and 0 deletions
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2
arch/arm/include/asm/arch-mx6/mx6sl_pins.h
View File

@ -145,5 +145,7 @@ enum {
MX6_PAD_KEY_COL0__GPIO_3_24 = IOMUX_PAD(0x474, 0x16c, 5, 0x0000, 0, 0),
MX6_PAD_KEY_COL1__GPIO_3_26 = IOMUX_PAD(0x478, 0x170, 5, 0x0000, 0, 0),
MX6_PAD_KEY_COL2__GPIO_3_28 = IOMUX_PAD(0x47c, 0x174, 5, 0x0000, 0, 0),
MX6_PAD_KEY_COL7__GPIO_4_6 = IOMUX_PAD(0x490, 0x188, 5, 0x0000, 0, 0),
};
#endif /* __ASM_ARCH_MX6_MX6SL_PINS_H__ */

10
board/reMarkable/zero-gravitas/zero-gravitas.c
View File

@ -97,6 +97,7 @@ DECLARE_GLOBAL_DATA_PTR;
/* For the BQ24133 charger */
#define BQ24133_CHRGR_OK IMX_GPIO_NR(4, 1)
#define USB_POWER_UP IMX_GPIO_NR(4, 6)
@ -110,6 +111,9 @@ int dram_init(void)
static iomux_v3_cfg_t const charger_pads[] = {
/* CHRGR_OK */
MX6_PAD_KEY_ROW4__GPIO_4_1 | MUX_PAD_CTRL(NO_PAD_CTRL),
/* USB_POWER_UP */
MX6_PAD_KEY_COL7__GPIO_4_6 | MUX_PAD_CTRL(NO_PAD_CTRL),
};
static iomux_v3_cfg_t const uart1_pads[] = {
@ -436,6 +440,7 @@ int power_init_board(void)
/* Set up charger */
imx_iomux_v3_setup_multiple_pads(charger_pads, ARRAY_SIZE(charger_pads));
gpio_request(BQ24133_CHRGR_OK, "bq24133_chrgr_ok");
gpio_direction_input(BQ24133_CHRGR_OK);
if (check_charger_status()) {
printf("Charging\n");
@ -527,6 +532,11 @@ int power_init_board(void)
check_battery();
/* Power is OK, disable the circuitry that automatically
* powers up the board when USB is plugged in */
gpio_request(USB_POWER_UP, "usb_power_up");
gpio_direction_output(USB_POWER_UP, 1);
return ret;
}