From: Yegor Yefremov yegorslists@googlemail.com
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 --- board/vscom/baltos/board.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/board/vscom/baltos/board.c b/board/vscom/baltos/board.c index dbf79a5..d3b1f15 100644 --- a/board/vscom/baltos/board.c +++ b/board/vscom/baltos/board.c @@ -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