usb: lpc32xx: add host USB driver
Incorporate USB driver from legacy LPCLinux NXP BSP.
The files taken from the legacy patch are:
- lpc32xx USB driver
- lpc3250 header file USB registers definition.
The legacy driver was updated and clean-up as part of the integration with the latest u-boot.
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Acked-by: Marek Vasut <marex@denx.de>
Tested-by: Vladimir Zapolskiy <vz@mleia.com>
diff --git a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c
index f0af851..d9fa280 100644
--- a/arch/arm/cpu/arm926ejs/lpc32xx/devices.c
+++ b/arch/arm/cpu/arm926ejs/lpc32xx/devices.c
@@ -72,6 +72,12 @@
writel(CLK_NAND_SLC | CLK_NAND_SLC_SELECT, &clk->flashclk_ctrl);
}
+void lpc32xx_usb_init(void)
+{
+ /* Do not route the UART 5 Tx/Rx pins to the USB D+ and USB D- pins. */
+ clrbits_le32(&ctrl->ctrl, UART_CTRL_UART5_USB_MODE);
+}
+
void lpc32xx_i2c_init(unsigned int devnum)
{
/* Enable I2C interface */
diff --git a/arch/arm/include/asm/arch-lpc32xx/clk.h b/arch/arm/include/asm/arch-lpc32xx/clk.h
index 663f6bc..d21310e 100644
--- a/arch/arm/include/asm/arch-lpc32xx/clk.h
+++ b/arch/arm/include/asm/arch-lpc32xx/clk.h
@@ -167,6 +167,18 @@
/* SDRAMCLK register bits */
#define CLK_SDRAM_DDR_SEL (1 << 1)
+/* USB control register definitions */
+#define CLK_USBCTRL_PLL_STS (1 << 0)
+#define CLK_USBCTRL_FDBK_PLUS1(n) (((n) & 0xFF) << 1)
+#define CLK_USBCTRL_POSTDIV_2POW(n) (((n) & 0x3) << 11)
+#define CLK_USBCTRL_PLL_PWRUP (1 << 16)
+#define CLK_USBCTRL_CLK_EN1 (1 << 17)
+#define CLK_USBCTRL_CLK_EN2 (1 << 18)
+#define CLK_USBCTRL_BUS_KEEPER (0x1 << 19)
+#define CLK_USBCTRL_USBHSTND_EN (1 << 21)
+#define CLK_USBCTRL_USBDVND_EN (1 << 22)
+#define CLK_USBCTRL_HCLK_EN (1 << 24)
+
unsigned int get_sys_clk_rate(void);
unsigned int get_hclk_pll_rate(void);
unsigned int get_hclk_clk_div(void);
diff --git a/arch/arm/include/asm/arch-lpc32xx/sys_proto.h b/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
index d6e5e68..eb8010f 100644
--- a/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-lpc32xx/sys_proto.h
@@ -16,6 +16,7 @@
void lpc32xx_slc_nand_init(void);
void lpc32xx_i2c_init(unsigned int devnum);
void lpc32xx_ssp_init(void);
+void lpc32xx_usb_init(void);
#if defined(CONFIG_SPL_BUILD)
void ddr_init(const struct emc_dram_settings *dram);
#endif