From c93bef9323f5a9ede9a4d140d030afb22330b550 Mon Sep 17 00:00:00 2001
From: Meng Dongyang <daniel.meng@rock-chips.com>
Date: Wed, 28 Jun 2017 19:22:44 +0800
Subject: [PATCH] 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>
---
board/rockchip/evb_rk3328/evb-rk3328.c | 42 ++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/board/rockchip/evb_rk3328/evb-rk3328.c b/board/rockchip/evb_rk3328/evb-rk3328.c
index bb2936352a..4d2a8c73bd 100644
--- 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
--
2.39.5