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Thu, 22 Jan 2026 17:14:08 -0800 (PST) From: "Kevin Hilman (TI)" Date: Thu, 22 Jan 2026 17:14:01 -0800 Subject: [PATCH RFC v5 2/2] pmdomain: arm_scmi: add support for domain hierarchies Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260122-pmdomain-hierarchy-onecell-v5-2-76855ec856bd@baylibre.com> References: <20260122-pmdomain-hierarchy-onecell-v5-0-76855ec856bd@baylibre.com> In-Reply-To: <20260122-pmdomain-hierarchy-onecell-v5-0-76855ec856bd@baylibre.com> To: Ulf Hansson , "Rafael J. Wysocki" , Sudeep Holla , Cristian Marussi Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-Mailer: b4 0.15-dev-47773 X-Developer-Signature: v=1; a=openpgp-sha256; l=1346; i=khilman@baylibre.com; h=from:subject:message-id; bh=He+aEhwIQiKMM6RZOhPxZk8LJB9l4Qy9dfY/jCduGYY=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBpcstetXh6fJOBD4eHHjr+saQFKxgmd6v0zRhkf ug0omaqIIqJAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCaXLLXgAKCRBZNxia0/vG ZQIgD/4i6Uc4w60OsIRYYqeP8oLa2eb6CzQU8aLVsNoiDPuv5uZnYUTHquh3eLM04pOyjyL938g jEvUGJVhqeiMw8clJVY3pP85aE6pIqEHRh4MtNLdHFbzeMVmk7jLxOO37wW3lO6HjPj/fOKkVlj 0hZ+eWyeo0DaLjAv20+LezZ47MUqkgRenx1FTRbkul4dY7+EvEunrgq0CW4xeSz1erh3GKCMjp3 xhUoU0zK7IaVczg3aPfyJcNVWM2CYMxpogkEQrN9GY8tVpRRQ8k4GdjZ3y1FDHnIUCQ/XH1c4Hn Ep2a0POgfv0x+p444bxRdhFrasXjYcab98iS7YT90j4ONuBxfpBeQwoJRKmmpCAZodwhQMjTfsb NKLq/J6fZDebRb0SJvJFqq80Sa7lb6XMZpOa/jgC3vL49YUrfcv9HEUyyxyb1s+d+usdDq/F6oy 4TeuublXmf/HOY/u/Rc9CgQoBGjNuE4vNZJrf7i+JN0snIoHtb3es1oe4QsQF0MwYQra7G4dbAA 0pyJeB/CjLJ41MmMcQ/FlF7CYfFxLOCKv+4AUnzrBBdQj3A+xjQbMEkxeAMsOmFGA/S1AMLN1hQ w3BjZGZkqJ/HIcunTq8hG0EZiT2dbl6rSz9o0Hn6GIpNKMvsRCHHaNDewPA7Lwu3+Q0MDXbzeMq yGl7x/R9Wppf8Pg== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 After primary SCMI pmdomain is created, use new of_genpd helper to check if there are any child domain mappings defined by power-domain-map, and create domain hierarchy. Also remove any child domain mappings when SCMI domain is removed. Signed-off-by: Kevin Hilman (TI) --- drivers/pmdomain/arm/scmi_pm_domain.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pmdomain/arm/scmi_pm_domain.c b/drivers/pmdomain/arm/s= cmi_pm_domain.c index b5e2ffd5ea64..a52387c45d88 100644 --- a/drivers/pmdomain/arm/scmi_pm_domain.c +++ b/drivers/pmdomain/arm/scmi_pm_domain.c @@ -114,8 +114,12 @@ static int scmi_pm_domain_probe(struct scmi_device *sd= ev) =20 dev_set_drvdata(dev, scmi_pd_data); =20 + /* check for (optional) subdomain mapping with power-domain-map */ + of_genpd_add_subdomain_map(np, scmi_pd_data); + return 0; err_rm_genpds: + of_genpd_remove_subdomain_map(np, scmi_pd_data); for (i =3D num_domains - 1; i >=3D 0; i--) pm_genpd_remove(domains[i]); =20 @@ -132,6 +136,7 @@ static void scmi_pm_domain_remove(struct scmi_device *s= dev) of_genpd_del_provider(np); =20 scmi_pd_data =3D dev_get_drvdata(dev); + of_genpd_remove_subdomain_map(np, scmi_pd_data); for (i =3D 0; i < scmi_pd_data->num_domains; i++) { if (!scmi_pd_data->domains[i]) continue; --=20 2.51.0