[U-Boot] [PATCH v2 00/32] spi: DM_SPI migration timeout, remainder(2)

[Heiko Schocher]

Hello Marek, Jagan,

Am 27.11.2018 um 13:10 schrieb Marek Vasut:
> On 11/27/2018 06:51 AM, Jagan Teki wrote:
>> On Mon, Nov 26, 2018 at 12:48 PM Peng Fan <peng.fan at nxp.com> wrote:
>>>
>>> Hi Jagan,
>>>
>>> Just have a quick question here.
>>>
>>> After dropping non-DM code, for SPL use non-DM code should switch to SPL_DM and use SPL OF CONTROL?
>>
>> Here are the options, that we dealt based on the size constraints
>> 1) try to use DM_SPL with SPL OF_CONTROL
> 
> Not possible
> 
>> 2) try PLATDATA
> 
> Adds extra bloat to SPLs which are already borderline, so not possible.
> 
>> 3) try TPL for truly small size
> 
> How would that help ? I don't need extra level of bootloader, I can use
> SPL right now.

Exactly my thoughts too. I have a at91 based board (smartweb) in mainline
where the SPL fits into 4k sram ... no chance for 1) or 2) ...

I see the reasons for integrating more and more stuff into SPL, but
it should be possible to build a small SPL ...

Hopefully TPL stays really small ...

Hmm.. while writting (did not actually looked into TPL ...):

Is it possible to boot U-boot directly from TPL ?

>> if none works, we can see the other option. may be some glue code to
>> read flash for SPL or something else.
> 
> I'll have to take a look at the Renesas Gen2, but probably next year.

I talk with customers to get time for converting, but this also may
take some time ...

bye,
Heiko
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