[U-Boot] [RFC 6/6] arm: exynos: add usbnet_devaddr setting to env

[Anand Moon]

Hi Krzysztof,

On Mon, 1 Apr 2019 at 18:34, Krzysztof Kozlowski <krzk at kernel.org> wrote:
>
> On Mon, 1 Apr 2019 at 13:53, Anand Moon <linux.amoon at gmail.com> wrote:
> >
> > Add usbnet_devaddr mac address to extra env setting
> > to avoid failure of ethernet driver while usb start.
> >
> > Odroid # usb start
> > starting USB...
> > USB0:   USB EHCI 1.00
> > scanning bus 0 for devices... 3 USB Device(s) found
> >        scanning usb for storage devices... 0 Storage Device(s) found
> >        scanning usb for ethernet devices...
> > Error: sms0 address not set.
> > Warning: failed to set MAC address
> > 1 Ethernet Device(s) found
> >
> > Signed-off-by: Anand Moon <linux.amoon at gmail.com>
> > ---
> >  include/configs/odroid.h | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/include/configs/odroid.h b/include/configs/odroid.h
> > index 64819cf81c..b0402e8d49 100644
> > --- a/include/configs/odroid.h
> > +++ b/include/configs/odroid.h
> > @@ -33,6 +33,7 @@
> >  #define CONFIG_SYS_MEMTEST_END         (CONFIG_SYS_SDRAM_BASE + 0x5E00000)
> >  #define CONFIG_SYS_LOAD_ADDR           (CONFIG_SYS_SDRAM_BASE + 0x3E00000)
> >  #define CONFIG_SYS_ODROID_USB
> > +#define CONFIG_USBNET_DEV_ADDR          "02:DE:AD:BE:EF:FF"
> >
> >  #include <linux/sizes.h>
> >
> > @@ -173,6 +174,7 @@
> >         "kernel_addr_r=0x41000000\0" \
> >         "scriptaddr=0x50000000\0" \
> >         "pxefile_addr_r=0x51000000\0" \
> > +       "usbethaddr=" __stringify(CONFIG_USBNET_DEV_ADDR) "\0" \
>
> No. Either the user should set it or manufacturer (e.g. in EEPROM).
>
Ok,

This usb Ethernet do not support reading mac addressed from EEPROM.
some user need to pass this mac address via boot command can used is approach.

But I could not perform "saveenv" after setting the mac address. see below.

Odroid #
Odroid # setenv usbethaddr C2:22:09:F2:5F:E8
Odroid #
Odroid # saveenv
Saving Environment to MMC... Card did not respond to voltage select!
No block device
Failed (1)
Odroid #

Best Regards
-Anand