Re: [PATCHv5 2/4] mailbox: Introduce framework for mailbox

[Jassi Brar]

On 19 May 2014 18:38, Arnd Bergmann <arnd@xxxxxxxx> wrote:
> On Friday 16 May 2014 19:03:25 Jassi Brar wrote:

>
>>  Also, some platform might need to communicate with remote master
>> during very early boot like for initializing system timers and clocks.
>> The API isn't working then.
>
> Do you have an example for a platform like that? I'd expect that normally
> we can have a boot loader that sets up the system timer to work good
> enough for us to get into normal driver initialization.
>
My platform. We choose to keep bootloader to the minimum and make
kernel not depend upon any goodies provided.
Second, which I don't think can be helped by a bootloader, the remote
master has gate & rate control of clocks to peripheral IPs. The
clk-api driver simply maps Linux requests onto mailbox commands. So
the mailbox is needed as early as CLK_OF_DECLARE (when kernel reads
the rate of every registered clock).   Any suggestions?

Thanks
Jassi
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