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arm: baltos: active mPCIe slot 

Baltos devices provide a mPCIe slot, whose power is turned off by
default. This patch activates mPCIe slot in U-Boot, so that for example
GSM modem can be already available in user space.

Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Yegor Yefremov 2016-12-01 12:52:17 +01:00 committed by Tom Rini
parent a970727067
commit dcf7f6f1cc
1 changed files with 18 additions and 0 deletions
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18
board/vscom/baltos/board.c
View File

@ -39,6 +39,7 @@ DECLARE_GLOBAL_DATA_PTR;
/* GPIO that controls power to DDR on EVM-SK */
#define GPIO_DDR_VTT_EN 7
#define DIP_S1 44
#define MPCIE_SW 100
static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
@ -330,6 +331,11 @@ int ft_board_setup(void *blob, bd_t *bd)
return 0;
}
static struct module_pin_mux pcie_sw_pin_mux[] = {
{OFFSET(mii1_rxdv), (MODE(7) | PULLUDEN )}, /* GPIO3_4 */
{-1},
};
static struct module_pin_mux dip_pin_mux[] = {
{OFFSET(gpmc_ad12), (MODE(7) | RXACTIVE )}, /* GPIO1_12 */
{OFFSET(gpmc_ad13), (MODE(7) | RXACTIVE )}, /* GPIO1_13 */
@ -355,6 +361,18 @@ int board_late_init(void)
baltos_set_console();
}
}
/* turn power for the mPCIe slot */
configure_module_pin_mux(pcie_sw_pin_mux);
if (gpio_request(MPCIE_SW, "mpcie_sw")) {
printf("failed to export GPIO %d\n", MPCIE_SW);
return -ENODEV;
}
if (gpio_direction_output(MPCIE_SW, 1)) {
printf("failed to set GPIO %d direction\n", MPCIE_SW);
return -ENODEV;
}
setenv("board_name", model);
#endif