Re: [PATCH v4 0/4] firmware: ti_sci: Introduce BOARDCFG_MANAGED mode for Jacinto family

[Thomas Richard <thomas.richard@bootlin.com>]

Hello Dhruva,

Thanks for the review.

On 2/9/26 10:51 AM, Dhruva Gole wrote:
> On Feb 04, 2026 at 16:03:37 +0100, Thomas Richard (TI) wrote:
>> The fourth iteration of this series adds support for two new firmware
>> capabilities:
>> - MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST: Indicates that DM-Firmware is not
>>   able to restore IRQ context during resume after suspend-to-ram.
>> - MSG_FLAG_CAPS_LPM_CLK_CONTEXT_LOST: Indicates that DM-Firmware is not
>>   able to restore clock context (rate and parent configuration) during
>>   resume after suspend-to-ram.
>>
>> Now, ti_sci driver determines whether to restore IRQs based on the
>> MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST capability rather than the
>> BOARDCFG_MANAGED mode. The same logic applies to the clock context.
>>
>> Both J784s4 and J7200 platforms support these new capabilities. A
>> corresponding pull request has been submitted on DM-Firmware side to
>> define and enable these capabilities.
>>
>> The value for the BOARDCFG_MANAGED mode has also been fixed.
>>
>> Public documentation for BOARDCFG_MANAGED mode and these new capabilities
>> is currently unavailable. I will update the series with relevant
>> documentation references as soon as they become available.
>>
>> I rebased the series on linux-next next-20260202.
>>
>> Best Regards,
>> Thomas
>>
>> Signed-off-by: Thomas Richard (TI) <thomas.richard@bootlin.com>
>> ---
>> Changes in v4:
>> - rebase on linux-next next-20260202.
>> - fix BOARDCFG_MANAGED value.
>> - add MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST firmware capability.
>> - add MSG_FLAG_CAPS_LPM_CLK_CONTEXT_LOST firmware capability.
>> - Link to v3: https://lore.kernel.org/r/20251205-ti-sci-jacinto-s2r-restore-irq-v3-0-d06963974ad4@bootlin.com
>>
>> Changes in v3:
>> - rebased on linux-next
>> - sci-clk: context_restore() operation restores also rate.
>> - Link to v2: https://lore.kernel.org/r/20251127-ti-sci-jacinto-s2r-restore-irq-v2-0-a487fa3ff221@bootlin.com
>>
>> Changes in v2:
>> - ti_sci: use hlist to store IRQs.
>> - sci-clk: add context_restore operation
>> - ti_sci: restore clock parents during resume
>> - Link to v1: https://lore.kernel.org/r/20251017-ti-sci-jacinto-s2r-restore-irq-v1-0-34d4339d247a@bootlin.com
>>
>> ---
>> Thomas Richard (TI) (4):
>>       firmware: ti_sci: add BOARDCFG_MANAGED mode support
>>       firmware: ti_sci: add support for restoring IRQs during resume
>>       clk: keystone: sci-clk: add restore_context() operation
>>       firmware: ti_sci: add support for restoring clock context during resume
> 
> The series looks good to me, just checking if maintainer prefers the 2/4
> PATCH on IRQ restore to be split up. IMO similar to how you've split up
> the clk restore support and then actually restored clk context in
> another patch, you can do similar split up for IRQ.
> No strong opinions from my side though.

Splitting clock part in 2 commits makes sense because two drivers are
involved. For IRQ part you would have a first patch adding all the hlist
logic only if MSG_FLAG_CAPS_LPM_IRQ_CONTEXT_LOST, and you just fill the
hlist. Then a second path adds the missing part in resume() path. I
think it is a bit odd, but no strong opinions.

If someone really wants this split up please let me know.

Best Regards,
Thomas