Thread (14 messages) 14 messages, 4 authors, 2020-03-06

Re: [PATCH V4 2/2] firmware: arm_scmi: add smc/hvc transport

From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2020-03-05 17:27:11
Also in: linux-devicetree, lkml

On 3/5/20 8:06 AM, Sudeep Holla wrote:
On Thu, Mar 05, 2020 at 11:25:35AM +0000, Peng Fan wrote:

[...]
quoted
quoted
Yes, this may fix the issue. However I would like to know if we need to support
multiple channels/shared memory simultaneously. It is fair requirement and
may need some work which should be fine.
Do you have any suggestions? Currently I have not worked out an good
solution.
TBH, I haven't given it a much thought. I would like to know if people
are happy with just one SMC channel for SCMI or do they need more ?
If they need it, we can try to solve it. Otherwise, what you have will
suffice IMO.
On our platforms we have one channel/shared memory area/mailbox instance
for all standard SCMI protocols, and we have a separate channel/shared
memory area/mailbox driver instance for a proprietary one. They happen
to have difference throughput requirements, hence the split.

If I read Peng's submission correctly, it seems to me that the usage
model described before is still fine.
-- 
Florian

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