ARM: rockchip: rv1108: Add a board_usb_init for USB OTG

Like it is done for other Rockchip SoCs, introduce a board_usb_init()
function so that USB OTG can be functional on rv1108 too.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>

2 files changed, 82 insertions, 0 deletions

diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 05706c472a..368302e1da 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_ROCKCHIP_RK322X) += rk322x-board.o
 obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288-board.o
 obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036-board.o
 obj-$(CONFIG_ROCKCHIP_RK3399) += rk3399-board.o
+obj-$(CONFIG_ROCKCHIP_RV1108) += rv1108-board.o
 endif
 
 obj-$(CONFIG_$(SPL_TPL_)RAM) += sdram_common.o
diff --git a/arch/arm/mach-rockchip/rv1108-board.c b/arch/arm/mach-rockchip/rv1108-board.c
new file mode 100644
index 0000000000..3412f2c063
--- /dev/null
+++ b/arch/arm/mach-rockchip/rv1108-board.c
@@ -0,0 +1,81 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2015 Google, Inc
+ */
+
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#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 rv1108_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)
+{
+	const void *blob = gd->fdt_blob;
+	bool matched = false;
+	int node, phy_node;
+	u32 grf_phy_offset;
+	const char *mode;
+
+	/* find the usb_otg node */
+	node = fdt_node_offset_by_compatible(blob, -1, "rockchip,rk3066-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,rk3066-usb");
+	}
+
+	if (!matched) {
+		debug("usb_otg device not found\n");
+		return -ENODEV;
+	}
+
+	rv1108_otg_data.regs_otg = fdtdec_get_addr(blob, node, "reg");
+
+	node = fdtdec_lookup_phandle(blob, node, "phys");
+	if (node <= 0) {
+		debug("phys node not found\n");
+		return -ENODEV;
+	}
+
+	phy_node = fdt_parent_offset(blob, node);
+	if (phy_node <= 0) {
+		debug("usb phy node not found\n");
+		return -ENODEV;
+	}
+
+	rv1108_otg_data.phy_of_node = phy_node;
+	grf_phy_offset = fdtdec_get_addr(blob, node, "reg");
+
+	/* find the grf node */
+	node = fdt_node_offset_by_compatible(blob, -1,
+					     "rockchip,rv1108-grf");
+	if (node <= 0) {
+		debug("grf node not found\n");
+		return -ENODEV;
+	}
+
+	rv1108_otg_data.regs_phy = grf_phy_offset + fdtdec_get_addr(blob, node,
+								    "reg");
+
+	return dwc2_udc_probe(&rv1108_otg_data);
+}
+
+int board_usb_cleanup(int index, enum usb_init_type init)
+{
+	return 0;
+}
+#endif