From: Stefan Agner Date: Wed, 30 May 2018 17:01:45 +0000 (+0200) Subject: imx: add macro to detect whether USB has been initialized X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=23eaf4180f9ff6f3898e0199e56cfcb563d2eb74;p=u-boot.git imx: add macro to detect whether USB has been initialized This macro allows to detect whether the boot ROM initialized USB already (serial downloader). This is helpful to reliably detect if the system has been recovered via USB serial downloader. Signed-off-by: Stefan Agner Acked-by: Marcel Ziswiler --- diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h index 431439218d..4f01b20aed 100644 --- a/arch/arm/include/asm/arch-mx6/imx-regs.h +++ b/arch/arm/include/asm/arch-mx6/imx-regs.h @@ -996,5 +996,12 @@ struct pwm_regs { u32 pr; u32 cnr; }; + +/* + * 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))) + #endif /* __ASSEMBLER__*/ #endif /* __ASM_ARCH_MX6_IMX_REGS_H__ */