imx: ventana: gw5904/gw5909: disable RS485

The GW5904/GW5909 have a SP33E multi-protocol serial transceiver which we
want to configure to RS232 by default (by de-asserting RS485_EN)

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

diff --git a/board/gateworks/gw_ventana/common.c b/board/gateworks/gw_ventana/common.c
index 8934f213dd9c474de7a4d2ac2964444c7b88a20c..8786a12dc0cddbc4ebb5eaee6273b277cb170e6c 100644 (file)
--- a/board/gateworks/gw_ventana/common.c
+++ b/board/gateworks/gw_ventana/common.c
@@ -1429,6 +1429,8 @@ void setup_iomux_gpio(int board, struct ventana_board_info *info)
                break;
        case GW5909:
        case GW5904:
+               gpio_request(IMX_GPIO_NR(4, 23), "rs485_en");
+               gpio_direction_output(IMX_GPIO_NR(4, 23), 0);
                gpio_request(IMX_GPIO_NR(5, 11), "skt1_wdis#");
                gpio_direction_output(IMX_GPIO_NR(5, 11), 1);
                gpio_request(IMX_GPIO_NR(5, 12), "skt1_rst#");