Re: [PATCH v2 2/2] pmdomain: qcom: rpmhpd: Add Milos power domains

["Luca Weiss" <luca.weiss@fairphone.com>]

Hi Casey,

On Mon Jul 7, 2025 at 3:23 PM CEST, Casey Connolly wrote:
>
>
> On 7/7/25 12:18, Luca Weiss wrote:
>> Add the power domains exposed by RPMH in the Qualcomm Milos platform.
>
> \o/ codenames!
>
>> 
>> Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
>> ---
>>   drivers/pmdomain/qcom/rpmhpd.c | 19 +++++++++++++++++++
>>   1 file changed, 19 insertions(+)
>> 
>> diff --git a/drivers/pmdomain/qcom/rpmhpd.c b/drivers/pmdomain/qcom/rpmhpd.c
>> index 078323b85b5648e33dd89e08cf31bdc5ab76d553..e09552a469264f28952fc46c3ab8c125e87310da 100644
>> --- a/drivers/pmdomain/qcom/rpmhpd.c
>> +++ b/drivers/pmdomain/qcom/rpmhpd.c
>> @@ -217,6 +217,24 @@ static struct rpmhpd gmxc = {
>>   	.res_name = "gmxc.lvl",
>>   };
>>   
>> +/* Milos RPMH powerdomains */
>
> I can't find any public docs telling us which SoC is Milos (the only 
> relevant result is Bjorn's email asking you to use that name instead of 
> SM7635). So for the sake of future generations could you reference both 
> names in a comment somewhere? Or even the commit message would be enough 
> tbh.

I don't know the full list of model numbers for Milos. I assume it's
SM7635, SM6650, SM6650P, QCM6690 and QCS6690 based on the info I could
fine, but such info is hard to get. So this is not a definite list that
all those are actually Milos, or that this is the full list of Milos
chipsets.

> Off-topic here, but maybe it would be a good idea to add some Qualcomm 
> platform docs to the kernel with a table of all the publicly known names 
> for each SoC? This would also be really helpful even ignoring codenames 
> just to know that SM8550 is Snapdragon 8 Gen 2 for example.

So far my source for this has been the postmarketOS wiki, and this
Google Doc, but the latter hasn't been updated for new chips since a
year or so, and is also probably not very complete:
https://docs.google.com/spreadsheets/d/1WrKHLj_oSoiykhSc6xqXAkT3nlD2hq-fzUPSGiq3Kbc/edit?gid=1270863184#gid=1270863184

And I've got some notes locally for a couple that I regularly need.

But I'd love a more central place that isn't specific to postmarketOS
for example. Not sure where though?

Regards
Luca

>
> Kind regards,
> Casey (she/they)
>
>> +static struct rpmhpd *milos_rpmhpds[] = {
>> +	[RPMHPD_CX] = &cx,
>> +	[RPMHPD_CX_AO] = &cx_ao,
>> +	[RPMHPD_EBI] = &ebi,
>> +	[RPMHPD_GFX] = &gfx,
>> +	[RPMHPD_LCX] = &lcx,
>> +	[RPMHPD_LMX] = &lmx,
>> +	[RPMHPD_MSS] = &mss,
>> +	[RPMHPD_MX] = &mx,
>> +	[RPMHPD_MX_AO] = &mx_ao,
>> +};
>> +
>> +static const struct rpmhpd_desc milos_desc = {
>> +	.rpmhpds = milos_rpmhpds,
>> +	.num_pds = ARRAY_SIZE(milos_rpmhpds),
>> +};
>> +
>>   /* SA8540P RPMH powerdomains */
>>   static struct rpmhpd *sa8540p_rpmhpds[] = {
>>   	[SC8280XP_CX] = &cx,
>> @@ -723,6 +741,7 @@ static const struct rpmhpd_desc qcs615_desc = {
>>   };
>>   
>>   static const struct of_device_id rpmhpd_match_table[] = {
>> +	{ .compatible = "qcom,milos-rpmhpd", .data = &milos_desc },
>>   	{ .compatible = "qcom,qcs615-rpmhpd", .data = &qcs615_desc },
>>   	{ .compatible = "qcom,qcs8300-rpmhpd", .data = &qcs8300_desc },
>>   	{ .compatible = "qcom,qdu1000-rpmhpd", .data = &qdu1000_desc },
>>