Commit decd6e77 authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Bjorn Andersson
Browse files

soc: qcom: rpmpd: Add parent PD support 



In some cases (like with the GPU core clock on GMU-less SoCs) it's
required that we scale more than one voltage domain. This can be achieved
by linking them in a parent-child relationship. Add support for specifying
a parent PD, similarly to what has been done in the RPMhPD driver.

Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230313-topic-rpmpd-v3-8-06a4f448ff90@linaro.org
parent d338fe40

drivers/soc/qcom/rpmpd.c

+10 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ struct rpmpd_req { 


struct rpmpd {

	struct generic_pm_domain pd;

	struct generic_pm_domain *parent;

	struct rpmpd *peer;

	const bool active_only;

	unsigned int corner;
@@ -969,6 +970,15 @@ static int rpmpd_probe(struct platform_device *pdev) 
		data->domains[i] = &rpmpds[i]->pd;

	}



	/* Add subdomains */

	for (i = 0; i < num; i++) {

		if (!rpmpds[i])

			continue;



		if (rpmpds[i]->parent)

			pm_genpd_add_subdomain(rpmpds[i]->parent, &rpmpds[i]->pd);

	}



	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);

}