rockchip: rk3328: board: add support of dwc2 gadget

Probe dwc2 udc in the function of board_usb_start to enable
usb gadget function.

Signed-off-by: Meng Dongyang <daniel.meng@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

diff --git a/board/rockchip/evb_rk3328/evb-rk3328.c b/board/rockchip/evb_rk3328/evb-rk3328.c
index bb29363..4d2a8c7 100644 (file)
--- a/board/rockchip/evb_rk3328/evb-rk3328.c
+++ b/board/rockchip/evb_rk3328/evb-rk3328.c
@@ -16,7 +16,49 @@ int board_init(void)
        return 0;
 }
 
+#if defined(CONFIG_USB_GADGET) && defined(CONFIG_USB_GADGET_DWC2_OTG)
+#include <usb.h>
+#include <usb/dwc2_udc.h>
+
+static struct dwc2_plat_otg_data rk3328_otg_data = {
+       .rx_fifo_sz     = 512,
+       .np_tx_fifo_sz  = 16,
+       .tx_fifo_sz     = 128,
+};
+
 int board_usb_init(int index, enum usb_init_type init)
 {
+       int node;
+       const char *mode;
+       bool matched = false;
+       const void *blob = gd->fdt_blob;
+
+       /* find the usb_otg node */
+       node = fdt_node_offset_by_compatible(blob, -1,
+                                       "rockchip,rk3328-usb");
+
+       while (node > 0) {
+               mode = fdt_getprop(blob, node, "dr_mode", NULL);
+               if (mode && strcmp(mode, "otg") == 0) {
+                       matched = true;
+                       break;
+               }
+
+               node = fdt_node_offset_by_compatible(blob, node,
+                                       "rockchip,rk3328-usb");
+       }
+       if (!matched) {
+               debug("Not found usb_otg device\n");
+               return -ENODEV;
+       }
+
+       rk3328_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg");
+
+       return dwc2_udc_probe(&rk3328_otg_data);
+}
+
+int board_usb_cleanup(int index, enum usb_init_type init)
+{
        return 0;
 }
+#endif