Re: [RFC V6 0/8] arm_scmi: vendors: Qualcomm Generic Vendor Extensions

On Thu, May 07, 2026 at 03:28:21PM +0530, Sibi Sankar wrote:
> 
> On 5/7/2026 2:40 PM, Dmitry Baryshkov wrote:
> > On Thu, May 07, 2026 at 11:52:29AM +0530, Sibi Sankar wrote:
> > > The QCOM SCMI vendor protocol provides a generic way of exposing a number of
> > > Qualcomm SoC specific features (like memory bus scaling) through a mixture of
> > > pre-determined algorithm strings and param_id pairs hosted on the SCMI
> > > controller. On Qualcomm Glymur and Hamoa SoCs, the memlat governor and the
> > > mechanism to control the various caches and ram is hosted on the CPU Control
> > > Processor (CPUCP) and the method to tweak and start the governor is exposed
> > > through the QCOM SCMI Generic Extension Protocol.
> > 
> > Could you please clarify, does this apply to the common commercial
> > Glymur and Hamoa laptops?
> 
> Yes, they do apply to common commercial Glymur/Hamoa Laptops
> as is. This is the same solution used on the windows side of things
> as well. There can be certain cases like Johan has reported earlier
> where certain oems are stuck with on older version of CPUCP
> which requires a the memlat string to be sent out in lower case
> we should be able to handle those as well with overriding those
> by using driver data and specific compatibles.

Ack, thanks for the confirmation.

-- 
With best wishes
Dmitry