[U-Boot] [PATCH] imx: mx6: add is_boot_from_usb define
This enables us to detect if the i.MX6 SoC is booting from USB.
Signed-off-by: Sean Nyekjaer sean.nyekjaer@prevas.dk --- arch/arm/include/asm/arch-mx6/imx-regs.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/arm/include/asm/arch-mx6/imx-regs.h b/arch/arm/include/asm/arch-mx6/imx-regs.h index 095eb74195..10da611968 100644 --- a/arch/arm/include/asm/arch-mx6/imx-regs.h +++ b/arch/arm/include/asm/arch-mx6/imx-regs.h @@ -998,4 +998,11 @@ struct pwm_regs { u32 cnr; }; #endif /* __ASSEMBLER__*/ + +/* + * 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 /* __ASM_ARCH_MX6_IMX_REGS_H__ */
Hi Sean,
On Tue, Apr 24, 2018 at 9:05 AM, Sean Nyekjaer sean.nyekjaer@prevas.dk wrote:
This enables us to detect if the i.MX6 SoC is booting from USB.
Signed-off-by: Sean Nyekjaer sean.nyekjaer@prevas.dk
Could you use is_usbotg_phy_active() for this purpose?
Please see:
commit 7d289d6239b29171bf9503869f1a92c084cf1c35 Author: Stefan Agner stefan.agner@toradex.com Date: Wed Sep 13 14:29:44 2017 -0700
imx: add macro to detect whether USB PHY is active
This macro allows to detect whether the USB PHY is active. This is helpful to detect if the boot ROM has previously started the USB serial downloader.
The idea is taken from the mfgtool support in the NXP U-Boot: http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/commit/?h=imx_v2016....
Signed-off-by: Stefan Agner stefan.agner@toradex.com Acked-by: Marcel Ziswiler marcel.ziswiler@toradex.com Tested-by: Fabio Estevam fabio.estevam@nxp.com Reviewed-by: Eric Nelson eric@nelint.com
Hi Fabio On 24 April 2018 14:13:51 CEST, Fabio Estevam festevam@gmail.com wrote:
Hi Sean,
On Tue, Apr 24, 2018 at 9:05 AM, Sean Nyekjaer sean.nyekjaer@prevas.dk wrote:
This enables us to detect if the i.MX6 SoC is booting from USB.
Signed-off-by: Sean Nyekjaer sean.nyekjaer@prevas.dk
Could you use is_usbotg_phy_active() for this purpose?
Please see:
commit 7d289d6239b29171bf9503869f1a92c084cf1c35 Author: Stefan Agner stefan.agner@toradex.com Date: Wed Sep 13 14:29:44 2017 -0700
imx: add macro to detect whether USB PHY is active
This macro allows to detect whether the USB PHY is active. This is helpful to detect if the boot ROM has previously started the USB serial downloader.
The idea is taken from the mfgtool support in the NXP U-Boot: http://git.freescale.com/git/cgit.cgi/imx/uboot-imx.git/commit/?h=imx_v2016....
Mine was also taken from that commit. Yes I could use this instead :-) the mx7 is using the same naming as the NXP uboot for the mx6 that why I missed that...
/Sean
Signed-off-by: Stefan Agner stefan.agner@toradex.com Acked-by: Marcel Ziswiler marcel.ziswiler@toradex.com Tested-by: Fabio Estevam fabio.estevam@nxp.com Reviewed-by: Eric Nelson eric@nelint.com
participants (3)
-
Fabio Estevam -
Sean Nyekjaer -
Sean Nyekjær