[]...
>>> It would also be nicer if this parent/child relationship can
>>> somehow be represented in data (struct gdsc) that gets passed to
>>> the gdsc driver which then sets it up, instead of individual
>>> clock drivers doing it.
>>
>> Agreed. I'd rather that we do nothing besides register domains
>> and then let the core code handle hooking up domains and
>> subdomains.
>
> A little closer inspection makes me want to skip this. PM domains
> can have multiple "master" domains, and pm_genpd_init() is the
> only API that would be able to do the linking. That API is mostly
> about initializing things to default values, so it doesn't seem
> like a good fit. I'll send a v2 with the remove part and the
> exports.
What I was suggesting is that the qcom gdsc driver handle this
instead of the qcom clock drivers.
Something like..
diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index da9fad8..00edb2d 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -226,6 +226,8 @@ int gdsc_register(struct device *dev, struct gdsc **scs, size_t num,
if (ret)
return ret;
data->domains[i] = &scs[i]->pd;
+ if (scs[i]->parent)
+ pm_genpd_add_subdomain(scs[i]->parent, &scs[i]->pd);
}
return of_genpd_add_provider_onecell(dev->of_node, data);
diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h
index 5ded268..bc5791f 100644
--- a/drivers/clk/qcom/gdsc.h
+++ b/drivers/clk/qcom/gdsc.h
@@ -49,6 +49,7 @@ struct gdsc {
struct reset_controller_dev *rcdev;
unsigned int *resets;
unsigned int reset_count;
+ struct generic_pm_domain *parent;
};
#ifdef CONFIG_QCOM_GDSC
diff --git a/drivers/clk/qcom/mmcc-msm8974.c b/drivers/clk/qcom/mmcc-msm8974.c
index fe8320d..51ad8de 100644
--- a/drivers/clk/qcom/mmcc-msm8974.c
+++ b/drivers/clk/qcom/mmcc-msm8974.c
@@ -2400,6 +2400,7 @@ static struct gdsc oxilicx_gdsc = {
.pd = {
.name = "oxilicx",
},
+ .parent = &oxili_gdsc.pd,
.pwrsts = PWRSTS_OFF_ON,
};
--
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