[U-Boot] [PATCH] imx: mx7: Add support for USB boot mode

[Troy Kisky]

On 8/27/2017 3:04 PM, Eric Nelson wrote:
> This adds support for USB boot mode on the i.MX7D SoC, which
> is most useful when doing U-Boot development on this chip.
> 
> i.e., it enables you to enter the ROM boot loader's serial
> download protocol using the command:
> 
> => bmode usb
> 
> Signed-off-by: Eric Nelson <eric at nelint.com>
> ---
>  arch/arm/mach-imx/mx7/soc.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/mach-imx/mx7/soc.c b/arch/arm/mach-imx/mx7/soc.c
> index 87bf105..63ee59f 100644
> --- a/arch/arm/mach-imx/mx7/soc.c
> +++ b/arch/arm/mach-imx/mx7/soc.c
> @@ -372,6 +372,8 @@ void set_wdog_reset(struct wdog_regs *wdog)
>   * to SBMR1, which will determine the boot device.
>   */
>  const struct boot_mode soc_boot_modes[] = {

You might want to add

+       {"normal",      MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},


while you're at it, to undo with "bmode normal"

> +	{"usb",		MAKE_CFGVAL(0x01, 0x00, 0x00, 0x00)},
> +
>  	{"ecspi1:0",	MAKE_CFGVAL(0x00, 0x60, 0x00, 0x00)},
>  	{"ecspi1:1",	MAKE_CFGVAL(0x40, 0x62, 0x00, 0x00)},
>  	{"ecspi1:2",	MAKE_CFGVAL(0x80, 0x64, 0x00, 0x00)},
> 

Reviewed-by: Troy Kisky <troy.kisky at boundarydevices.com>