Re: [SPAM] [PATCH 2/3] FPGA: add a programming command

[Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>]

On Nov 7, 2013, at 10:37 PM, Lucas Stach <l.stach@pengutronix.de> wrote:

> Am Donnerstag, den 07.11.2013, 15:37 +0100 schrieb Jean-Christophe
> PLAGNIOL-VILLARD:
>> On 12:09 Thu 07 Nov     , Sascha Hauer wrote:
>>> On Thu, Nov 07, 2013 at 11:04:56AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
>>>> Hi,
>>>> 
>>>> 	I really do not like it
>>>> 
>>>> 	we need to have an API to load firmware same a Linux
>>> 
>>> The firmware loading mechanism in Linux is driven by the driver
>>> requesting a firmware. This is appropriate for WiFi drivers which can't
>>> continue without a firmware. For FPGAs which can be loaded, unloaded, or
>>> even partially loaded, it's the user that should trigger firmware
>>> loading, not the driver.
>>> 
>>> Also, in barebox a user should decide if and when a firmware is loaded.
>>> We have cases where a single board requires different Firmwares
>>> depending on bootstrapping. In this case You don't want to have fixed
>>> firmware names.
>>> 
>>> So no, the Linux Firmware model is not suitable for barebox (it sucks
>>> for Linux aswell in many cases).
>> 
>> and command is horrible as you need to known the protocol which you do not
>> care
>> 
>> you just need to known the fpga device and firmware you want to use
>> 
>> then the fpga driver will handle
>> 
> Did you take the time to read the patches?
> 
> From a user perspective you only specify which FPGA you want to program
> and tell the command which firmware file to use. The protocol and other
> lowlevel stuff is taken care of in the handler.

yes I did but the issue is that you need to use a command instead just simply
set a parameter to the fpga device

that why I hate the idea of command you use the device to set the firmware you want

Best Regards,
J.

> 
> Regards,
> Lucas
> -- 
> Pengutronix e.K.                           | Lucas Stach                 |
> Industrial Linux Solutions                 | http://www.pengutronix.de/  |
> Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-5076 |
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> 


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