imx: ventana: add DT fixup for GW522x to change PCIE_RST# GPIO

The GW522x is functionally the same as a GW52xx except for PCIE_RST#
GPIO. Add a DT fixup to change this gpio upon bootup.

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

diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index b7199f1b420336b16ac9a73beba521adfcf9e3b6..50a2a9adf0c16d083a2299ddae3d4ab3c7976c5e 100644 (file)
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -669,6 +669,8 @@ static iomux_v3_cfg_t const gw52xx_gpio_pads[] = {
        IOMUX_PADS(PAD_EIM_D31__GPIO3_IO31 | DIO_PAD_CFG),
        /* PCI_RST# */
        IOMUX_PADS(PAD_ENET_TXD1__GPIO1_IO29 | DIO_PAD_CFG),
+       /* PCI_RST# (GW522x) */
+       IOMUX_PADS(PAD_EIM_D23__GPIO3_IO23 | DIO_PAD_CFG),
        /* PCIESKT_WDIS# */
        IOMUX_PADS(PAD_GPIO_17__GPIO7_IO12 | DIO_PAD_CFG),
 };
@@ -1168,6 +1170,10 @@ static void setup_board_gpio(int board)
        }
 
 #if !defined(CONFIG_CMD_PCI)
+       /* GW522x Uses GPIO3_IO23 for PCIE_RST# */
+       if (board_type == GW52xx && info->model[4] == '2')
+               gpio_cfg[board].pcie_rst = IMX_GPIO_NR(3, 23);
+
        /* assert PCI_RST# (released by OS when clock is valid) */
        gpio_direction_output(gpio_cfg[board].pcie_rst, 0);
 #endif
@@ -1656,6 +1662,28 @@ int ft_board_setup(void *blob, bd_t *bd)
                        fdt_status_disabled(blob, i);
        }
 
+       /* GW522x Uses GPIO3_IO23 instead of GPIO1_IO29 */
+       else if (board_type == GW52xx && info->model[4] == '2') {
+               u32 handle = 0;
+               u32 *range = NULL;
+
+               i = fdt_node_offset_by_compatible(blob, -1, "fsl,imx6q-pcie");
+               if (i)
+                       range = (u32 *)fdt_getprop(blob, i, "reset-gpio",
+                                                  NULL);
+
+               if (range) {
+                       i = fdt_path_offset(blob,
+                                           "/soc/aips-bus@02000000/gpio@020a4000");
+                       if (i)
+                               handle = fdt_get_phandle(blob, i);
+                       if (handle) {
+                               range[0] = cpu_to_fdt32(handle);
+                               range[1] = cpu_to_fdt32(23);
+                       }
+               }
+       }
+
        /*
         * isolate CSI0_DATA_EN for GW551x below revB to work around
         * errata causing non functional digital video in (it is not hooked up)