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 b7199f1..50a2a9a 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -669,6 +669,8 @@
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 @@
}
#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 @@
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)