Re: [PATCH] firmware: arm_scpi: Add hardware dependencies

From: Sudeep Holla
Date: Wed Jan 25 2017 - 08:56:32 EST

On 25/01/17 13:50, Jean Delvare wrote:
> On Wed, 25 Jan 2017 13:38:47 +0000, Sudeep Holla wrote:
>> On 25/01/17 13:32, Jean Delvare wrote:
>>> With a name like that, I assume that the ARM SCPI protocol is only
>>> useful on the ARM architectures.
>>> Signed-off-by: Jean Delvare <jdelvare@xxxxxxx>
>>> Fixes: 8f1498c03d15 ("firmware: arm_scpi: make it depend on MAILBOX instead of")
>>> Cc: Sudeep Holla <sudeep.holla@xxxxxxx>
>>> Cc: Jon Medhurst (Tixy) <tixy@xxxxxxxxxx>
>>> ---
>>> Please correct me if I'm wrong.
>> I won't say you are wrong but the reason why it's named arm_scpi is
>> because the protocol was developed by ARM. It doesnn't mean only
>> ARM/ARM64 needs to use it, it can be used on any architecture for
>> inter-processor communication using any communication technique
>> (currently mailbox is the only supported in the driver)
> OK, thanks for the clarification. In practice, what other architectures
> are using it?

None, hence I didn't say you are wrong ;). I am fine having the check if
it breaks for any other architecture with COMPILE_TEST.

Also you have mentioned it fixes 8f1498c03d15, have you seen any
regression with that commit ? If so, details in the commit would be good.