From nobody Tue Dec 2 02:05:23 2025 Received: from mail-pl1-f178.google.com (mail-pl1-f178.google.com [209.85.214.178]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CBF17229B18 for ; Thu, 20 Nov 2025 00:58:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.178 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763600338; cv=none; b=m+BRdNrMks7TLG90FXKiIvMT7JkodzjFCn0QfjxRad+8m2yK0/1xsNfck5fdQil9LfTcWdhJHJnIVmlDbiap7DuSqO1iXOOeMvZvux5jCr2ta9KqksjM6AklOvfFcnn4A0X2EA7DZqoHfM+BjrBf7RNkhNZY1PIYVmRH5Lh5TNY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763600338; c=relaxed/simple; bh=3PQNMqTCo6Bv83OlDl6XL1WlulxhVHi7Y6T58c9reAw=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=RRtzA8WnyLM0mP7+OOHlo4qDGf5P3+a+jJhcYrBGAks63gQbvA+mAMK2e3cjtXCYMJlp8e1whOgA1GSXuUoguPYwk8QRRNGoKf7yImf86qQLKxEkefFZ9crhE3v++YK1IbDelnuRq0a6EmVELCBfQNT20aSAMKL3wWGXucu5aXs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=EK+3bGQF; arc=none smtp.client-ip=209.85.214.178 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="EK+3bGQF" Received: by mail-pl1-f178.google.com with SMTP id d9443c01a7336-2981f9ce15cso3988445ad.1 for ; Wed, 19 Nov 2025 16:58:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1763600331; x=1764205131; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=1HOSz7Nhg2hib5+MsGrf5GnNEZi36IgMHP2XG3P5bRc=; b=EK+3bGQFc8T6MO3B01/CZDoA+Cf4y3MwFl2CXhdIPU7MG6XFn7kDW/EY7jeoo18qVz Ntytv/qZktbsQIxD9c7p1cpOrYyYKRKLZqB9Qdj1AK+XcAuyBgDrMQB0NFxjn4fsziCV G2HQPmd/deeGedRLKtVUQ7A2j23xQFYSS29X8TX1+WgGeZUGFILc6vfJ2Ksu6RwH6p6x vjkvSI0Q+WmUyU3KQfP7fkj0rwCmyiDeYa2ZjkrAfKki0LL6AUzSXo3RhRieJVuzX+Wn d7IsUEFR+d54LrpHK9mRDmqlKyjn3uKDmmLvwzONDqtWd3VhD1vNtwQ0CYu6smYvxBLi 1djA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763600331; x=1764205131; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=1HOSz7Nhg2hib5+MsGrf5GnNEZi36IgMHP2XG3P5bRc=; b=fxmVEpaBrUIF3nWIRBUmajjc48FOBRgwBWE1QBDG0KYlH0rjx27Elskt68nDtDpXpZ 1nsrwSkaCu1oVs46JLJLY8BuHuqy0Mf8cScsIQ4rgPBhIj0H4NHpRM0Cva+Y+iZr6mHf 4X10bdzdpUWfma18vZ8BRnWfg2o+0+4xCp+wPfANdj4ZTNQH1EH5cZBo6OhYA5zXI6ZZ i1GRBmYRjka6OoAND+apA8UZzWU+LaAVpTEJQKlRzZwMX1l5Dg4c3R+ta05ENJSlfhgX Dr8m7aEoHykXn/D/yH6XHBuSkktHe/mMIh/RM4dHiFv9qix9M7a4cU9oj3w9nYVSew04 0HkA== X-Forwarded-Encrypted: i=1; AJvYcCVxcvzT98NDsMUXA8oCyKXCWWwWqyY2NMqWnmLmPpnpNGkgZuYEjy7NXMFN+MzDgas6X6jjymMb18nhoJM=@vger.kernel.org X-Gm-Message-State: AOJu0YyAJ4kH/stxuS8RHBjxsimQF1oL/iuHDOsTi/S3LQjNVZBLyVIF T350BAkdXivy3fI4e/GlLtBjtno0IB2AlFJHB/oj7YDUf8tuyIj53RrCKnf1AJ4InNk= X-Gm-Gg: ASbGncuX78XNW8FO1LaY0OvQdTDOVdx0lI1Ho+eYJIpn6SI6ZOSh+H5siL93GbhJ9Gr scsEAzNm6tj+BmSm8weN3E9ZRVqOvh6mlS0Mzr9akvTS5oCTsCpsl9y1QCqrzsvio0/jGd+kgXW o643vyg/ZZLSff75s66IsC9w0xV8GbZB/9QilWdfJMu1fnAS2QNHgloK18tzWS8CDqnJAR6nS4Y jcTrfDOP26avcU7CoFv0WnoJpmZS0PBj2TTouoCZUInZ78y/xU+cY1DbdO5CEGGp/PWD6+O/FHv j22lbrbU3ylA9CbiNOZHK9jdgmsqs32dxQtx06Nhx7iQ0v/E5O3UcbmahmEtgsNR6sKqtNehTxz bhpfuJBJxK7O8R16XqEULpg3jDc/44bI1/AHk9kfaz8yZCTaTql0rOTETdpU140gxne//fM5OSQ v7KkKea6frbF9tJP4F0xE= X-Google-Smtp-Source: AGHT+IGD8JdJMishvWvxBHf6mqJE4p6Nm5YoA9CtyR2X0OJOuWziT1uwkLIUjDaxoq/Z9fy9tkbsKg== X-Received: by 2002:a17:903:3ba5:b0:295:8db9:305f with SMTP id d9443c01a7336-29b5ec563b5mr3561975ad.34.1763600330925; Wed, 19 Nov 2025 16:58:50 -0800 (PST) Received: from localhost ([71.212.208.158]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-bd75eaa7321sm645682a12.16.2025.11.19.16.58.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Nov 2025 16:58:50 -0800 (PST) From: "Kevin Hilman (TI.com)" Date: Wed, 19 Nov 2025 16:58:45 -0800 Subject: [PATCH RFC v4 1/2] pmdomain: core: support domain hierarchy via power-domain-map 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: <20251119-pmdomain-hierarchy-onecell-v4-1-f25a1d5022f8@baylibre.com> References: <20251119-pmdomain-hierarchy-onecell-v4-0-f25a1d5022f8@baylibre.com> In-Reply-To: <20251119-pmdomain-hierarchy-onecell-v4-0-f25a1d5022f8@baylibre.com> To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-kernel@vger.kernel.org, Kevin Hilman X-Mailer: b4 0.15-dev-a6db3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4733; i=khilman@baylibre.com; h=from:subject:message-id; bh=3PQNMqTCo6Bv83OlDl6XL1WlulxhVHi7Y6T58c9reAw=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBpHmfIa2IFvtI2PnsxyQOm7O73lR8Im9v5vR7Ix 30WnBZuDpSJAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCaR5nyAAKCRBZNxia0/vG ZSBPEACbUD50ZyWHnPuNIfYT7C7jV9kTyjkgQGYRDoc6cEV1rlVLHeyk9sve1x7rmgzZON9vHAY 5LRmJraD1cWuGx+qUHueYPZXrucfT8l+HeahjgqYTlhtDwoek1sTkC7Kb+6UA4LThpK/J9ZhBxN nJjizxVrQuTQZsuKd3kGRYt2wmIiPlK4q08I6vXgPTqYJPTAQaY4hBXXreVA+vfTHBtPU7JhK8Z +nqA92GDXp4AqicKT3dgD7Da/vM/PO9mv4iDO3UzVcVX/kqUt7FfBPoPvumXQWa3MQ3/X+o0MLO ru+e04qCGfwXgFbw381+kMqT01amCkujyrZQI3vY1KtcWbsv/+qI9EuQ6NE0ymQ0Lygg15fNFia 2kPDDSL3laMgsb7krL6WF/bHe24Bm5MGOVmWApgsbzC/7zj6sRj7fZgbCYWawm2OVf62QXZ1FUA oVnBs6myn4cPUFnoXVKTgVhJrbHFE8G36QWz52IQuhsrB3PNnj3j++H2bPPEiM4I6JDOt3eLtla KlXIcwOVONmq3VUQsf+upmdkCFGvLXd3mhAeA05w4/3t/3B+ZEZiCWBniWkDF+DgkpBXzxRL/GC aj70bFlwIjHmV6k+YiCTVrt6jo02QxsEQSKzHWd3nMgtF5js2yvMX56A6WX9HFYkHYEDDjtxELz XTV41DnNtmmY4Eg== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 Add of_genpd_add_subdomain_map() helper function to support hierarchical PM domains defined by using power-domains-map property (c.f. nexus node maps in DT spec, section 2.5.1). This enables PM domain providers with #power-domain-cells > 0 to establish subdomain relationships via the power-domain-map property, which was not previously possible. This new helper function - uses an OF helper to iterate to over entries in power-domain-map - For each mapped entry: extracts child specifier, resolves parent phandle, extracts parent specifier args, and establishes subdomain relationship - Uses genpd_add_subdomain() with proper gpd_list_lock mutex protection Example from k3-am62l.dtsi: scmi_pds: protocol@11 { #power-domain-cells =3D <1>; power-domain-map =3D <15 &MAIN_PD>, /* TIMER0 */ <19 &WKUP_PD>; /* WKUP_TIMER0 */ }; MAIN_PD: power-controller-main { #power-domain-cells =3D <0>; }; WKUP_PD: power-controller-main { #power-domain-cells =3D <0>; }; This allows SCMI power domain 15 to become a subdomain of MAIN_PD, and domain 19 to become a subdomain of WKUP_PD. Signed-off-by: Kevin Hilman (TI.com) --- drivers/pmdomain/core.c | 64 +++++++++++++++++++++++++++++++++++++++++++= +++ include/linux/pm_domain.h | 9 +++++++ 2 files changed, 73 insertions(+) diff --git a/drivers/pmdomain/core.c b/drivers/pmdomain/core.c index 61c2277c9ce3..592e9126896c 100644 --- a/drivers/pmdomain/core.c +++ b/drivers/pmdomain/core.c @@ -3483,6 +3483,70 @@ int of_genpd_parse_idle_states(struct device_node *d= n, } EXPORT_SYMBOL_GPL(of_genpd_parse_idle_states); =20 +int of_genpd_add_subdomain_map(struct device_node *np, + struct genpd_onecell_data *data) +{ + struct generic_pm_domain *genpd, *parent_genpd; + struct of_phandle_args child_args, parent_args; + int index =3D 0; + int ret =3D 0; + u32 child_index; + + if (!np || !data) + return -EINVAL; + + /* Iterate through power-domain-map entries using the OF helper */ + while (!of_parse_map_iter(np, "power-domain", &index, + &child_args, &parent_args)) { + /* Extract the child domain index from the child specifier */ + if (child_args.args_count < 1) { + of_node_put(parent_args.np); + ret =3D -EINVAL; + break; + } + child_index =3D child_args.args[0]; + + /* Validate child domain index */ + if (child_index >=3D data->num_domains) { + of_node_put(parent_args.np); + continue; + } + + genpd =3D data->domains[child_index]; + if (!genpd) { + of_node_put(parent_args.np); + continue; + } + + /* Get parent power domain from provider and establish subdomain relatio= nship */ + mutex_lock(&gpd_list_lock); + + parent_genpd =3D genpd_get_from_provider(&parent_args); + if (IS_ERR(parent_genpd)) { + mutex_unlock(&gpd_list_lock); + of_node_put(parent_args.np); + ret =3D PTR_ERR(parent_genpd); + dev_err(&genpd->dev, "failed to get parent domain: %d\n", ret); + break; + } + + ret =3D genpd_add_subdomain(parent_genpd, genpd); + mutex_unlock(&gpd_list_lock); + of_node_put(parent_args.np); + + if (ret) { + dev_err(&genpd->dev, "failed to add as subdomain of %s: %d\n", + parent_genpd->name, ret); + break; + } + + dev_info(&genpd->dev, "added as subdomain of %s\n", + parent_genpd->name); + } + + return ret; +} + /** * of_genpd_sync_state() - A common sync_state function for genpd providers * @np: The device node the genpd provider is associated with. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index f67a2cb7d781..3585acb89b83 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -462,6 +462,8 @@ int of_genpd_add_subdomain(const struct of_phandle_args= *parent_spec, int of_genpd_remove_subdomain(const struct of_phandle_args *parent_spec, const struct of_phandle_args *subdomain_spec); struct generic_pm_domain *of_genpd_remove_last(struct device_node *np); +int of_genpd_add_subdomain_map(struct device_node *np, + struct genpd_onecell_data *data); 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); @@ -504,6 +506,13 @@ static inline int of_genpd_remove_subdomain(const stru= ct of_phandle_args *parent return -ENODEV; } =20 +static int of_genpd_add_subdomain_map(struct device_node *np, + struct generic_pm_domain *genpd, + int index) +{ + return -ENODEV; +} + static inline int of_genpd_parse_idle_states(struct device_node *dn, struct genpd_power_state **states, int *n) { --=20 2.51.0 From nobody Tue Dec 2 02:05:23 2025 Received: from mail-pf1-f179.google.com (mail-pf1-f179.google.com [209.85.210.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E748C22B8BD for ; Thu, 20 Nov 2025 00:58:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763600337; cv=none; b=cmLQmkWXdRhugLfF+9xVksGwgksllbRuxwMi2eqWrI61x8CyNKc5uq+Aj1s2aTNEgC5GDsS4PpaYP4vn3nJ/OHX29vXqoQcNnovgcKYaD4RWPMh0YznPREraOS5SNToFRHZl+KU8LHJO67NazTiBtjs6lUS1UFRYi7jdOmQMpls= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763600337; c=relaxed/simple; bh=Vg3Dfytm6mN+l/mw3VTkFpkman7sIJ6vOYXNpDQ8C3o=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=EQ2QCiie9iLo5+Fka5rMuyWsS4ewdaLxNVtDFr6bXlMdvbenIXJDKic4B2oqNGWs1q3G1cuytZzNKLHdW+xW4FeQX7yvFH6pL7lmXyuEBvtzRaQO2N0+c4HaIMdhAQKkNdFdvp3yVuJZ6GsNgIYf7zq+R2xesEi3mOpeXjlwFnw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=cycdMQnu; arc=none smtp.client-ip=209.85.210.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="cycdMQnu" Received: by mail-pf1-f179.google.com with SMTP id d2e1a72fcca58-7b89c1ce9easo326415b3a.2 for ; Wed, 19 Nov 2025 16:58:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1763600332; x=1764205132; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=C25VKTJE18FQAubUn6mHIqbat2AO33yDk5BUZb+r0Gg=; b=cycdMQnuqXLp7OcO3n38iOJ1HWiJenAChx4FirSOFHwcQ8UjVfffXyFddwIWaNXFSh 5PFoPzgPdvkufbUfh+OFH5gdoR570uUsQMCloK0xdHrSEYvgBVrwCdwwvmCsbXLgLK3x M625Fwa52O5HhHaE1Dce/SyYUNVHI3IQ3G3mc44tKNg48FuebnXpb5HPMgssgJGxuI9l 5BdiwR6ciplx5d5jKa1fd8Np3E33zLZ5rD5xno1LqTFBkfkUwPQwmBFp80dAVcNEhURR i05XMRK3y/jhJU1iftt4fkoK8+4rVnqTOlJt08cC/zv0ZKgh8nra5z+DE5S5Uz+ve1B9 xq/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763600332; x=1764205132; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=C25VKTJE18FQAubUn6mHIqbat2AO33yDk5BUZb+r0Gg=; b=qP2IDWm/e9DUMO+uKN+ITHOs2LhqwYAJzQcuX48J4mVlnZ7wU6MkiWNStQvFFSANCu +MOu0u+KQamR5msvSkazMnb3zW/fzKumBt7z5gfK5OWegIs6t9fAbm7TZlhkRbWwCPK4 oXfxhJNVGpYWXdFWHw/Fef7q+7FMYnlAUWbGT2dPYqrqytQ/Ox9RcHua4VL/eleRfkWV ffkHjLu7e0eJtKi7nzSoQJTRX+EQkZaZYqHqudqPULtmMOjyQxlcUOtfVMzefDsdp8oy +cw0CD3F4XF/xKMcK3Pl9SNAdH7DcEZzTyyyVBtxbUBs3Bo3cmLz/36kVrU2g1lDFBON L8mQ== X-Forwarded-Encrypted: i=1; AJvYcCUK5CRL22RpoELg03QwQ2f3lGXD197PxaPLYKZiCNcGSns5bZHfOSr7TTAAyVKrKfFerW0qX1A+07ReiWo=@vger.kernel.org X-Gm-Message-State: AOJu0Ywty7dIJqsw8ZscZxmX9yjGV42JYm2YmoucRNk63UwevTeHrAS3 osoppkRmjKdsxKteET0PJJf77bn2ay8oPeZ4gvmfFEgbcZbuu6Phx6GvDeeEgWPITxs= X-Gm-Gg: ASbGncvnM/bVZLA5mlYhXyS+q5cr/uRheCp8R9NDyqsnEqmUgacB+Qb2wvoBHivPpGr t8RvFiBahT2Lrh+BG2XiLaFrbamSG9DufjBFHwg8Tql32UZ58yV04hlvWJdwBf99LxPV9EnSGqG M1KGhtzTxUSuhTWj83f7fGcj75zD8zGPbXbQLeSeYKJB96HPDchZ+ZQNuemuxZJtBLY+onCeW0d jJRPAzMPS1Nl5352lNez24m+OJLVnKQOQ144HpcN2GaYARlfwdp7Ps7hIb+AaEYiDUuL9R60KMF QjlEbnASFfwS5IjZUH64ivq111VLA00z/PZwrk49j2WjMiX/6g3P0CefqhtKenMZwe5ddYRvMTS Njw/v3pZRc2xdKIFsEOY/R7+m+sj1Z1/DohQorP2fLyVVGXs33K+eRsT9bHsscjBOlI6Mo2DWF9 192TsAGV+6J4UQPFHD25I= X-Google-Smtp-Source: AGHT+IEfWWSQGWwmjXnP90NBRRB0lSXrJG9QyqOu7cpnIYxGj58Rbgq/RWXv0OrwC6cJbeE0wdFOKw== X-Received: by 2002:a05:6a20:6a22:b0:35e:a390:ca13 with SMTP id adf61e73a8af0-3613b65daecmr1855088637.57.1763600332065; Wed, 19 Nov 2025 16:58:52 -0800 (PST) Received: from localhost ([71.212.208.158]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7c3f175275asm599838b3a.69.2025.11.19.16.58.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Nov 2025 16:58:51 -0800 (PST) From: "Kevin Hilman (TI.com)" Date: Wed, 19 Nov 2025 16:58:46 -0800 Subject: [PATCH RFC v4 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: <20251119-pmdomain-hierarchy-onecell-v4-2-f25a1d5022f8@baylibre.com> References: <20251119-pmdomain-hierarchy-onecell-v4-0-f25a1d5022f8@baylibre.com> In-Reply-To: <20251119-pmdomain-hierarchy-onecell-v4-0-f25a1d5022f8@baylibre.com> To: Ulf Hansson , Rob Herring , Krzysztof Kozlowski Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-kernel@vger.kernel.org, Kevin Hilman X-Mailer: b4 0.15-dev-a6db3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1331; i=khilman@baylibre.com; h=from:subject:message-id; bh=Vg3Dfytm6mN+l/mw3VTkFpkman7sIJ6vOYXNpDQ8C3o=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBpHmfIsKO+ghFTA0HB5/6MyL42Tp8Dx9FXfmNlN 1nYj0rWKzeJAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCaR5nyAAKCRBZNxia0/vG ZXT1D/0aoT1Orf3HteVwC7ayj1eXa1OftaReuZGWtJTJvdLFH1T6oJB0J13aq6K2vzGm+wW7N/B F0Rmik29QJ9OHYADQmmO11FI85Ktp/U0vC4K/vs8M+0sdKSNK+54Vh32rtrfKr25WHfU6CSPeSN nmrwcSw3JbhtfJe7DDwTfyZVOSN0+GiVD6CnOahcDL7HTgCBkDTjok+Lpf9k913a0WXFZlJCFO6 Dtd7i4l6vIFvKagWXhCwUm2yjDk/1Hki6tUOcTMKaE+DTnSWwe+F3KXoe+kfax9Y12vXIQh7ETS 0LGKLCpA9zCl6D2iou877L4+C8PGYfxUN5nc+2WaI90GZXfiEAzPNTCqTL54REMsJzuiUGEupve z+peqQAEuzqzYY1g3960oGfmHRtsSFtSfbTzq1KgrF44miGgFtMPNMT9aLvnPs1kZ908hES3kDX UTAuJfdoDS5daGnwNR/umM6CvHCub4PKpjbnAFIxmcwEJ+cdXr4bj4ODDKXuExvw3dRzxF7CsAS wMmcm4BGZTyNJYaS/f1rpj6TPZl/xfRXBQhgvHr+zbzmPqctKbM3yBTzjKSilHvhP8mexu93uUj 9JOpmy3hlH3kUHGp/I8v5TdJNqBm6IRSiGx1meTyljsKZPLLNTv74ym1RpH7SS/sPrDLKXPXj8Q mfO9tUNgypDMB0g== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 After primary SCMI pmdomain is created, use new of_genpd helper to check subdomain mappings, and create domain hierarchy. Signed-off-by: Kevin Hilman (TI.com) --- drivers/pmdomain/arm/scmi_pm_domain.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/pmdomain/arm/scmi_pm_domain.c b/drivers/pmdomain/arm/s= cmi_pm_domain.c index 8fe1c0a501c9..a36bb50c7cf6 100644 --- a/drivers/pmdomain/arm/scmi_pm_domain.c +++ b/drivers/pmdomain/arm/scmi_pm_domain.c @@ -41,7 +41,7 @@ static int scmi_pd_power_off(struct generic_pm_domain *do= main) =20 static int scmi_pm_domain_probe(struct scmi_device *sdev) { - int num_domains, i; + int num_domains, i, ret; struct device *dev =3D &sdev->dev; struct device_node *np =3D dev->of_node; struct scmi_pm_domain *scmi_pd; @@ -110,7 +110,14 @@ static int scmi_pm_domain_probe(struct scmi_device *sd= ev) =20 dev_set_drvdata(dev, scmi_pd_data); =20 - return of_genpd_add_provider_onecell(np, scmi_pd_data); + ret =3D of_genpd_add_provider_onecell(np, scmi_pd_data); + if (ret) + return ret; + + /* check for (optional) subdomain mapping with power-domain-map */ + of_genpd_add_subdomain_map(np, scmi_pd_data); + + return ret; } =20 static void scmi_pm_domain_remove(struct scmi_device *sdev) --=20 2.51.0