[U-Boot] [PATCH v1 16/21] display5: net: Add function to read ethaddr from iMX6 fuses
Joe Hershberger
joe.hershberger at ni.com
Wed May 16 16:14:29 UTC 2018
On Wed, May 16, 2018 at 9:46 AM, Lukasz Majewski <lukma at denx.de> wrote:
> Hi Joe,
>
>> Hi Lukasz,
>>
>> On Fri, May 11, 2018 at 9:51 AM, Lukasz Majewski <lukma at denx.de>
>> wrote:
>> > Signed-off-by: Lukasz Majewski <lukma at denx.de>
>> > ---
>> >
>> > board/liebherr/display5/display5.c | 21 +++++++++++++++++++++
>> > 1 file changed, 21 insertions(+)
>> >
>> > diff --git a/board/liebherr/display5/display5.c
>> > b/board/liebherr/display5/display5.c index 4bade476a5..a3deba216c
>> > 100644 --- a/board/liebherr/display5/display5.c
>> > +++ b/board/liebherr/display5/display5.c
>> > @@ -254,6 +254,25 @@ static void setup_iomux_enet(void)
>> > gpio_direction_input(IMX_GPIO_NR(1, 28)); /*INT#_GBE*/
>> > }
>> >
>> > +static int setup_mac_from_fuse(void)
>> > +{
>> > + unsigned char enetaddr[6];
>> > + int ret;
>> > +
>> > + ret = eth_env_get_enetaddr("ethaddr", enetaddr);
>> > + if (ret) /* ethaddr is already set */
>> > + return 0;
>> > +
>> > + imx_get_mac_from_fuse(0, enetaddr);
>>
>> Generally this should be registered as a read_rom_hwaddr handler.
>
> This function seems like a generic approach for IMX SoC:
> arch/arm/mach-imx/mac.c
>
> On the other hand the fec_mxc.c driver seems to have such function:
>
> .read_rom_hwaddr = fecmxc_read_rom_hwaddr,
> (which latter on calls the above function).
>
> To use this function in the automatic way I would need to enable DM_ETH
> for this board.
Good idea.
>> Then you won't be recreating the logic around what to do with it.
>>
>> > +
>> > + if (is_valid_ethaddr(enetaddr)) {
>> > + eth_env_set_enetaddr("ethaddr", enetaddr);
>> > + return 0;
>> > + }
>> > +
>> > + return 0;
>> > +}
>> > +
>> > int board_eth_init(bd_t *bd)
>> > {
>> > struct phy_device *phydev;
>> > @@ -268,6 +287,8 @@ int board_eth_init(bd_t *bd)
>> > if (ret)
>> > return ret;
>> >
>> > + setup_mac_from_fuse();
>> > +
>> > bus = fec_get_miibus(IMX_FEC_BASE, -1);
>> > if (!bus)
>> > return -ENODEV;
>> > --
>> > 2.11.0
>> >
>> > _______________________________________________
>> > U-Boot mailing list
>> > U-Boot at lists.denx.de
>> > https://lists.denx.de/listinfo/u-boot
>
>
>
>
> Best regards,
>
> Lukasz Majewski
>
> --
>
> DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
>
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