[U-Boot] [PATCH 3/4] rv1108: Make USB OTG functional

[Otavio Salvador]

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 at ossystems.com.br>
---

 arch/arm/dts/rv1108.dtsi              | 45 ++++++++++++++-
 arch/arm/mach-rockchip/Makefile       |  1 +
 arch/arm/mach-rockchip/rv1108-board.c | 81 +++++++++++++++++++++++++++
 3 files changed, 124 insertions(+), 3 deletions(-)
 create mode 100644 arch/arm/mach-rockchip/rv1108-board.c

diff --git a/arch/arm/dts/rv1108.dtsi b/arch/arm/dts/rv1108.dtsi
index 23a44bfaca..215d885225 100644
--- a/arch/arm/dts/rv1108.dtsi
+++ b/arch/arm/dts/rv1108.dtsi
@@ -121,8 +121,35 @@
 	};
 
 	grf: syscon at 10300000 {
-		compatible = "rockchip,rv1108-grf", "syscon";
+		compatible = "rockchip,rv1108-grf", "syscon", "simple-mfd";
 		reg = <0x10300000 0x1000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		u2phy: usb2-phy at 100 {
+			compatible = "rockchip,rv1108-usb2phy";
+			reg = <0x100 0x0c>;
+			clocks = <&cru SCLK_USBPHY>;
+			clock-names = "phyclk";
+			#clock-cells = <0>;
+			clock-output-names = "usbphy";
+			rockchip,usbgrf = <&usbgrf>;
+			status = "disabled";
+
+			u2phy_otg: otg-port {
+				interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "otg-mux";
+				#phy-cells = <0>;
+				status = "disabled";
+			};
+
+			u2phy_host: host-port {
+				interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
+				interrupt-names = "linestate";
+				#phy-cells = <0>;
+				status = "disabled";
+			};
+		};
 	};
 
 	saradc: saradc at 1038c000 {
@@ -141,6 +168,11 @@
 		reg = <0x20060000 0x1000>;
 	};
 
+	usbgrf: syscon at 202a0000 {
+		compatible = "rockchip,rv1108-usbgrf", "syscon";
+		reg = <0x202a0000 0x1000>;
+	};
+
 	cru: clock-controller at 20200000 {
 		compatible = "rockchip,rv1108-cru";
 		reg = <0x20200000 0x1000>;
@@ -200,12 +232,19 @@
 	};
 
 	usb20_otg: usb at 30180000 {
-		compatible = "rockchip,rv1108-usb", "rockchip,rk3288-usb",
+		compatible = "rockchip,rv1108-usb", "rockchip,rk3066-usb",
 			     "snps,dwc2";
 		reg = <0x30180000 0x40000>;
 		interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
-		hnp-srp-disable;
+		clocks = <&cru HCLK_OTG>;
+		clock-names = "otg";
 		dr_mode = "otg";
+		g-np-tx-fifo-size = <16>;
+		g-rx-fifo-size = <280>;
+		g-tx-fifo-size = <256 128 128 64 32 16>;
+		g-use-dma;
+		phys = <&u2phy_otg>;
+		phy-names = "usb2-phy";
 		status = "disabled";
 	};
 
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
-- 
2.19.1