Re: [PATCH 4/9] interconnect: qcom: icc-rpm: allow overwriting get_bw callback

[Konrad Dybcio]

On 3/24/26 12:14 AM, Dmitry Baryshkov wrote:
> On Mon, Mar 23, 2026 at 11:32:33AM +0100, Konrad Dybcio wrote:
>> On 3/23/26 2:17 AM, Dmitry Baryshkov wrote:
>>> MSM8974 requires a separate get_bw callback, since on that platform
>>> increasing the clock rate for some of the NoCs during boot may lead to
>>> hangs. For the details see commit 9caf2d956cfa ("interconnect: qcom:
>>> msm8974: Don't boost the NoC rate during boot").
>>
>> Is there a single specific bus where this causes an issue, or is
>> setting *any* resource to INT_MAX problematic?
> 
> I'd refer this to Luca. I didn't experiment that much (and also note,
> this behaviour might be firmware-specific).

In case anyone's interested, it _seems like_ it's

(RPM_KEY_BW + RPM_BUS_MASTER_REQ/RPM_BUS_SLAVE_REQ) failing with certain
nodes

> My goal for this patchset was to port as close as possible. We can drop
> the get_bw later, after enabling more interconnects, writing the QoS,
> etc.

That's fine

Konrad