[U-Boot] net: gpio PHY driver

[Darius Augulis <augulis.darius@gmail.com>]

Hi Ben,

On 07/01/2009 10:02 PM, Ben Warren wrote:
> Hi Darius,
>
> Darius Augulis wrote:
>> On 07/01/2009 09:12 PM, Richard Retanubun wrote:
>>> Darius Augulis wrote:
>>>> On 07/01/2009 03:37 PM, Jerry Van Baren wrote:
>>>>> Darius Augulis wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I need to control RGMII PHY connected to GPIO.
>>>>>> Seems there isn't such driver in u-boot.
>>>>>> I would like to discuss how is better to implement this?
>>>>>> I could port mdio_gpio driver from Linux Kernel,
>>>>>> but u-boot does not have universal gpio driver.
>>>>>> Off course I could make this very board specific, but It may be
>>>>>> useful for
>>>>>> other boards, interfacing PHY with GPIO's.
>>>>>>
>>>>>> Any ideas welcome!
>>>>>>
>>>>>> Darius A.
>>>>> It sounds like you are looking for CONFIG_BITBANGMII.
>>>> Probably. Even it has MPC specific things, I guess should be easy to
>>>> re-use it in my system.
>>> Wow, what a coincidence!
>>> Just in case you system is MPC83XX based, I just submitted a patch
>>> for consideration
>>> that adds bitbang SMI to uec_phy.c<stolen from gvb's implementation,
>>> of course>
>>
> It sure would be nice to see a patch that gets the CPU-specific crap out
> of the miiphybb driver. This type of problem has been dealt with in
> other places such as I2C and SPI. Any takers?
>> No, my system is not MPC based. I'm working on new board and CPU
>> (Gemini) support in u-boot. My SoC has two GMAC controllers.
>> btw, what is the right way to add new Ethernet driver?
>> Should I define CONFIG_CMD_NET and CONFIG_NET_MULTI in my board config?
>> Or should I define eth_* funtions right in the driver code?
>>
> I'm looking forward to your submission.
>
> As Richard mentioned, CONFIG_CMD_NET enables networking.
>
> CONFIG_NET_MULTI really means "use the networking code that supports
> multiple interfaces". It doesn't mean "my board has more than one
> interface". Going forward, this is mandatory for all Ethernet drivers.
> Support for the old-style API (eth_* in drivers) is deprecated and is
> scheduled for removal this fall:
>
> http://git.denx.de/?p=u-boot.git;a=blob;f=doc/feature-removal-schedule.txt;h=9bbdc0a83226aa1158ddd73d253e4742c0124159;hb=HEAD

thank you for this information. I will add CONFIG_NET_MULTI temporary in 
my board, and will remove for 2009-11 release.

Darius.

>
>
> regards,
> Ben
>
>
>