[U-Boot] [PATCH 3/5] Add fuse API and commands

[Eric Nelson <eric.nelson@boundarydevices.com>]

On 08/23/2012 03:31 AM, Stefano Babic wrote:
> On 22/08/2012 12:43, Dirk Behme wrote:
>> On 14.08.2012 14:52, Beno?t Th?baudeau wrote:
>>> This can be useful for fuse-like hardware, OTP SoC options, etc.
>>
>> For i.MX6, I have a port of the OTP support from Freescale's U-Boot to
>> our mainline U-Boot in the queue [1].
>>
>> As I don't have the overview over the various i.MXxx SoCs and don't
>> understand much of this patch below: Should this implement the same
>> functionality like my patch [1] for i.MX6?
>
> I have not checked the details. but seeing the code it looks that the
> procedure to read / write are different. In this case, a further driver
> is ok.
>
> Anyway, you should take a look if your patches can be used on a mxs
> (MX28) device, because they should be closer. And then I will not like
> to have a driver for each SOC.
>
> Generally, I think we should use the approach of the common command and
> a specific fuse implementation. Then this API should be used by your
> patches as well.
>
I agree.

The use of the fuse API will likely result in more code than the
imxotp implementation, and more importantly, it will make the usage
more confusing by introducing terms bank and row.

Reading and writing fuses is probably not an area that we want
confusion.

Regards,


Eric