From 29e34a882b09e9f01d0fff5e312ea0cf9499137d Mon Sep 17 00:00:00 2001 From: "Kevin Hilman (TI)" Date: Mon, 20 Apr 2026 16:51:18 -0700 Subject: pmdomain: core: add support for power-domains-child-ids Currently, PM domains can only support hierarchy for simple providers (e.g. ones with #power-domain-cells = 0). Add support for oncell providers as well by adding a new property `power-domains-child-ids` to describe the parent/child relationship. For example, an SCMI PM domain provider has multiple domains, each of which might be a child of diffeent parent domains. In this example, the parent domains are MAIN_PD and WKUP_PD: scmi_pds: protocol@11 { reg = <0x11>; #power-domain-cells = <1>; power-domains = <&MAIN_PD>, <&WKUP_PD>; power-domains-child-ids = <15>, <19>; }; With this example using the new property, SCMI PM domain 15 becomes a child domain of MAIN_PD, and SCMI domain 19 becomes a child domain of WKUP_PD. To support this feature, add two new core functions - of_genpd_add_child_ids() - of_genpd_remove_child_ids() which can be called by pmdomain providers to add/remove child domains if they support the new property power-domains-child-ids. The add function is "all or nothing". If it cannot add all of the child domains in the list, it will unwind any additions already made and report a failure. Signed-off-by: Kevin Hilman (TI) Signed-off-by: Ulf Hansson --- include/linux/pm_domain.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include') diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index b299dc0128d6..f925614aebdb 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -467,6 +467,10 @@ struct generic_pm_domain *of_genpd_remove_last(struct device_node *np); int of_genpd_parse_idle_states(struct device_node *dn, struct genpd_power_state **states, int *n); void of_genpd_sync_state(struct device_node *np); +int of_genpd_add_child_ids(struct device_node *np, + struct genpd_onecell_data *data); +int of_genpd_remove_child_ids(struct device_node *np, + struct genpd_onecell_data *data); int genpd_dev_pm_attach(struct device *dev); struct device *genpd_dev_pm_attach_by_id(struct device *dev, @@ -536,6 +540,18 @@ struct generic_pm_domain *of_genpd_remove_last(struct device_node *np) { return ERR_PTR(-EOPNOTSUPP); } + +static inline int of_genpd_add_child_ids(struct device_node *np, + struct genpd_onecell_data *data) +{ + return -EOPNOTSUPP; +} + +static inline int of_genpd_remove_child_ids(struct device_node *np, + struct genpd_onecell_data *data) +{ + return -EOPNOTSUPP; +} #endif /* CONFIG_PM_GENERIC_DOMAINS_OF */ #ifdef CONFIG_PM -- cgit v1.2.3 From 43a4b19c17d156786adf3515434e7d522664d75d Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Tue, 14 Apr 2026 11:59:07 +0800 Subject: dt-bindings: power: qcom,rpmhpd: Fix whitespace in RPMHPD defines Some RPMHPD_* defines in the Generic RPMH Power Domain Indexes section were using spaces instead of tabs for alignment. Fix them to be consistent with the rest of the file. Signed-off-by: Shawn Guo Acked-by: Rob Herring (Arm) Signed-off-by: Ulf Hansson --- include/dt-bindings/power/qcom,rpmhpd.h | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) (limited to 'include') diff --git a/include/dt-bindings/power/qcom,rpmhpd.h b/include/dt-bindings/power/qcom,rpmhpd.h index 67e2634fdc99..74e910150956 100644 --- a/include/dt-bindings/power/qcom,rpmhpd.h +++ b/include/dt-bindings/power/qcom,rpmhpd.h @@ -7,7 +7,7 @@ #define _DT_BINDINGS_POWER_QCOM_RPMHPD_H /* Generic RPMH Power Domain Indexes */ -#define RPMHPD_CX 0 +#define RPMHPD_CX 0 #define RPMHPD_CX_AO 1 #define RPMHPD_EBI 2 #define RPMHPD_GFX 3 @@ -19,14 +19,14 @@ #define RPMHPD_MX_AO 9 #define RPMHPD_MXC 10 #define RPMHPD_MXC_AO 11 -#define RPMHPD_MSS 12 +#define RPMHPD_MSS 12 #define RPMHPD_NSP 13 -#define RPMHPD_NSP0 14 -#define RPMHPD_NSP1 15 -#define RPMHPD_QPHY 16 -#define RPMHPD_DDR 17 -#define RPMHPD_XO 18 -#define RPMHPD_NSP2 19 +#define RPMHPD_NSP0 14 +#define RPMHPD_NSP1 15 +#define RPMHPD_QPHY 16 +#define RPMHPD_DDR 17 +#define RPMHPD_XO 18 +#define RPMHPD_NSP2 19 #define RPMHPD_GMXC 20 #define RPMHPD_DCX 21 #define RPMHPD_GBX 22 -- cgit v1.2.3 From 5f0e40827295a4e46da719a399eb72cc2a5a14d6 Mon Sep 17 00:00:00 2001 From: Kamal Wadhwa Date: Tue, 14 Apr 2026 11:59:08 +0800 Subject: dt-bindings: power: qcom,rpmhpd: Add RPMh power domain for Nord SoC Document the RPMh power domain for Nord SoC, and add definitions for the new power domains present on Nord SoC. - RPMHPD_NSP3: power domain for the 4th NSP subsystem - RPMHPD_GFX1: power domain for the 2nd GFX subsystem Signed-off-by: Kamal Wadhwa Signed-off-by: Shawn Guo Acked-by: Rob Herring (Arm) Reviewed-by: Konrad Dybcio Signed-off-by: Ulf Hansson --- Documentation/devicetree/bindings/power/qcom,rpmpd.yaml | 1 + include/dt-bindings/power/qcom,rpmhpd.h | 2 ++ 2 files changed, 3 insertions(+) (limited to 'include') diff --git a/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml b/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml index 0bf1e13a9964..779380cc7e44 100644 --- a/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml +++ b/Documentation/devicetree/bindings/power/qcom,rpmpd.yaml @@ -35,6 +35,7 @@ properties: - qcom,msm8994-rpmpd - qcom,msm8996-rpmpd - qcom,msm8998-rpmpd + - qcom,nord-rpmhpd - qcom,qcm2290-rpmpd - qcom,qcs404-rpmpd - qcom,qcs615-rpmhpd diff --git a/include/dt-bindings/power/qcom,rpmhpd.h b/include/dt-bindings/power/qcom,rpmhpd.h index 74e910150956..07bd2a7b0150 100644 --- a/include/dt-bindings/power/qcom,rpmhpd.h +++ b/include/dt-bindings/power/qcom,rpmhpd.h @@ -30,6 +30,8 @@ #define RPMHPD_GMXC 20 #define RPMHPD_DCX 21 #define RPMHPD_GBX 22 +#define RPMHPD_NSP3 23 +#define RPMHPD_GFX1 24 /* RPMh Power Domain performance levels */ #define RPMH_REGULATOR_LEVEL_RETENTION 16 -- cgit v1.2.3