MLK-14996-2 imx8qm/qxp: add boot from usb support

Add boot from usb support.
Follow same flow as i.mx6 chips.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

diff --git a/arch/arm/include/asm/arch-imx8/imx-regs.h b/arch/arm/include/asm/arch-imx8/imx-regs.h
index 376bf00..c8c5977 100644 (file)
--- a/arch/arm/include/asm/arch-imx8/imx-regs.h
+++ b/arch/arm/include/asm/arch-imx8/imx-regs.h
@@ -34,4 +34,14 @@
 
 #define ROM_SW_INFO_ADDR       0x00000890
 
+#define OTG_BASE_ADDR          0x5b0d0000
+#define USB_PHY0_BASE_ADDR     0x5b100000
+
+/*
+ * If ROM fail back to USB recover mode, USBPH0_PWD will be clear to use USB
+ * If boot from the other mode, USB0_PWD will keep reset value
+ */
+#define        is_boot_from_usb(void) (!(readl(USB_PHY0_BASE_ADDR) & (1<<20)))
+#define        disconnect_from_pc(void) writel(0x0, OTG_BASE_ADDR + 0x140)
+
 #endif /* __ASM_ARCH_IMX_REGS_H__ */