[PATCH v4 0/7] mtd: spi-nor: add a new framework for SPI NOR

[Jagan Teki]

On Fri, Jan 17, 2014 at 12:24 PM, Huang Shijie <b32955 at freescale.com> wrote:
> On Fri, Jan 17, 2014 at 12:36:08PM +0530, Jagan Teki wrote:
>> >> My basic question is like I have a qspi spi controller in my SOC and I
>> >> designed two boards B1 and B2
>> >
>> > okay.
>> >
>> >> B1 with quad spi controller connected with non-flash as a slave and B2
>> >> with quad spi controller connected
>> >> with quad flash as a slave.
>> > You can use the framework for B2. But for B1, you should not use the framework,
>> > since this framework is just for the SPI-NOR. If you do not connected with
>> > a NOR, i think it's better to code another driver for your controller.
>>
>> Means we have two separate controller drivers for same controller one
>> with spi-nor and
>> another with spi is it?
> Take drivers/spi/spi-imx.c for example, if you connect a NOR to it, you only
> need to add a NOR device node in the device tree. In the probe, it will call
> the m25p80.c to probe the NOR device.
>
> But if we connect other device to it. you should set another device node for it.
>
> I am not sure if your controller driver can works as the spi-imx.c

My question here was - this new framework suggest to write a two
different controller
drivers one is for non spi-nor and spi-nor models? do you agree that?

And also one important note from your design was spi-nor mode is
completely bypassing
Linux spi core is that the good idea?

-- 
Thanks,
Jagan.