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Mon, 3 Mar 2025 14:59:18 +0000 (GMT) X-AuditID: cbfec7f4-c0df970000004fb9-b2-67c5c3c7ba34 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 21.2D.19654.6C3C5C76; Mon, 3 Mar 2025 14:59:18 +0000 (GMT) Received: from AMDC4942.home (unknown [106.210.136.40]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250303145917eusmtip262401cb62e98a1cb3c10584e5559065b~pUvhfIk212997429974eusmtip2E; Mon, 3 Mar 2025 14:59:17 +0000 (GMT) From: Michal Wilczynski To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, drew@pdp7.com, guoren@kernel.org, wefu@redhat.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, jszhang@kernel.org, ulf.hansson@linaro.org, m.szyprowski@samsung.com Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Michal Wilczynski , Krzysztof Kozlowski Subject: [PATCH v1 1/5] dt-bindings: firmware: thead,th1520: Add support for firmware node Date: Mon, 3 Mar 2025 15:58:57 +0100 Message-Id: <20250303145901.446791-2-m.wilczynski@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250303145901.446791-1-m.wilczynski@samsung.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrCKsWRmVeSWpSXmKPExsWy7djP87rHDx9NN7j2kN3i2Z2vrBZbf89i t1iz9xyTxfwj51gt7l3awmTxYm8ji0XzsfVsFi9n3WOz2Pt6K7vF5V1z2Cw+9x5htNj2uYXN Yu2Ru+wW67/OZ7J4ebmH2aJtFr/F/z072C2Orw23aNk/hcVB2OPNy5csHoc7vrB73DsxjdVj 06pONo871/aweWxeUu/RsvYYk8f7fVfZPPq2rGL0uNR8nd3j8ya5AO4oLpuU1JzMstQifbsE rowb6+cyFawSr7i8WK2BcYlwFyMHh4SAicT+M/ldjJwcQgIrGCWatpd0MXIB2V8YJY5MXsQG 4XxmlJhybhYLTEPnV0mI+HJGiQWLXjNBOG8YJXpudTKDjGITMJJ4sHw+K0hCRKCfSaLvyH8w h1ngIaPE65dNrCBVwgIxEq8/rWAHsVkEVCX2z5sI1s0rYCexc3IHE4gtISAvsf/gWWaQ1ZwC 9hKfGjQhSgQlTs58wgJiMwOVNG+dzQwyX0JgN6fE9k3XoXpdJBrOX2eDsIUlXh3fwg5hy0ic ntzDAmHnSzzY+okZwq6R2NlzHMq2lrhz7hcbyF5mAU2J9bv0IcKOEhNetzFBQoJP4sZbQYgT +CQmbZvODBHmlehoE4KoVpOY2tMLt/Tcim1QnR4Ss5fZTmBUnIXkl1lIfpmFsHYBI/MqRvHU 0uLc9NRio7zUcr3ixNzi0rx0veT83E2MwIR4+t/xLzsYl7/6qHeIkYmD8RCjBAezkgjvrfaj 6UK8KYmVValF+fFFpTmpxYcYpTlYlMR5F+1vTRcSSE8sSc1OTS1ILYLJMnFwSjUwZVzkc/v6 bFXDmeTP2j+/uKcZX7p0I07c7r2ygu2aMzEqSi1WPjpu71rjijcmF/8zen2G53eQo6fd55QJ T/l3s24qiP7u+FTPOFDsuMWcsLfLz95gnCr8e9uWiTtWZ9wNSjov/mSr+5SPDJlVK+ymbL4k uzvfzf9hxtdv95c+XXW8d5t9T8XarzIf/q39OOnps5Io52l8Z3nvdFsu2FsXIcyzWdXi8Iae 8MWzEve4uriXeXw7kr58+yPReS5lca96twBDVGevre9EXaWJUrXO57afc/tiMTuy/FYxy8p6 yV07BcRPz992M2ql8vxO341f/++YkPW9LsBbetXlsKNneRezrXp78G5H3+vm29rXMpRYijMS DbWYi4oTAfQv4Q33AwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrCIsWRmVeSWpSXmKPExsVy+t/xe7rHDh9NN/hwRcni2Z2vrBZbf89i t1iz9xyTxfwj51gt7l3awmTxYm8ji0XzsfVsFi9n3WOz2Pt6K7vF5V1z2Cw+9x5htNj2uYXN Yu2Ru+wW67/OZ7J4ebmH2aJtFr/F/z072C2Orw23aNk/hcVB2OPNy5csHoc7vrB73DsxjdVj 06pONo871/aweWxeUu/RsvYYk8f7fVfZPPq2rGL0uNR8nd3j8ya5AO4oPZui/NKSVIWM/OIS W6VoQwsjPUNLCz0jE0s9Q2PzWCsjUyV9O5uU1JzMstQifbsEvYwb6+cyFawSr7i8WK2BcYlw FyMHh4SAiUTnV8kuRi4OIYGljBIPzjeydzFyAsVlJK51v2SBsIUl/lzrYoMoesUoMXFdEyNI gk3ASOLB8vmsIAkRgYVMElenbGAGSTALPGWU2HZDHMQWFoiS+PGyHWwqi4CqxP55E8FqeAXs JHZO7mCC2CAvsf/gWWaQizgF7CU+NWiCmEJAJa8+cUBUC0qcnPmEBWK6vETz1tnMExgFZiFJ zUKSWsDItIpRJLW0ODc9t9hIrzgxt7g0L10vOT93EyMwercd+7llB+PKVx/1DjEycTAeYpTg YFYS4b3VfjRdiDclsbIqtSg/vqg0J7X4EKMp0NUTmaVEk/OB6SOvJN7QzMDU0MTM0sDU0sxY SZyX7cr5NCGB9MSS1OzU1ILUIpg+Jg5OqQam6NnbLbuXPoxb+vpw5u9P91z+1qyRjn8/v/7x wnrB1+zyNpLruVKzeBhMNvp7KPAvatKfHHTDL1k6hCstcqGLYd6dcrYL/R8evZZa/kBGtP39 xN81Ku8l2T9E3LftYXd7dmeicHNVqUbGjMYkd5UVXFvCXNuXL7t5p3+T1qxJce2fBI431FRN klnx3fCdVvs112n+Ga4/eM8X8N2IvPnj8OPpfVZr/jwwXp/SrzXHnaEs5JTyzx1XP0+fIvTG 14j36d/4HTXPDmkFlZ26L31ggXnUSRMDCasDFhbPnJQPe78sb/rMJBSx+HbRo7eadZNun9EW XdLmoPd38v2Al7s715z1PqNTe23ezm18QScmKrEUZyQaajEXFScCABK364RnAwAA X-CMS-MailID: 20250303145918eucas1p10f64b2ce75e395ce208439307daa8a8f X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20250303145918eucas1p10f64b2ce75e395ce208439307daa8a8f X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20250303145918eucas1p10f64b2ce75e395ce208439307daa8a8f References: <20250303145901.446791-1-m.wilczynski@samsung.com> The kernel communicates with the E902 core through the mailbox transport using AON firmware protocol. Add dt-bindings to document it the dt node. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Michal Wilczynski --- .../bindings/firmware/thead,th1520-aon.yaml | 53 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 54 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/thead,th1520= -aon.yaml diff --git a/Documentation/devicetree/bindings/firmware/thead,th1520-aon.ya= ml b/Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml new file mode 100644 index 000000000000..bbc183200400 --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/firmware/thead,th1520-aon.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: T-HEAD TH1520 AON (Always-On) Firmware + +description: | + The Always-On (AON) subsystem in the TH1520 SoC is responsible for manag= ing + low-power states, system wakeup events, and power management tasks. It is + designed to operate independently in a dedicated power domain, allowing = it to + remain functional even during the SoC's deep sleep states. + + At the heart of the AON subsystem is the E902, a low-power core that exe= cutes + firmware responsible for coordinating tasks such as power domain control, + clock management, and system wakeup signaling. Communication between the= main + SoC and the AON subsystem is handled through a mailbox interface, which + enables message-based interactions with the AON firmware. + +maintainers: + - Michal Wilczynski + +properties: + compatible: + const: thead,th1520-aon + + mboxes: + maxItems: 1 + + mbox-names: + items: + - const: aon + + "#power-domain-cells": + const: 1 + +required: + - compatible + - mboxes + - mbox-names + - "#power-domain-cells" + +additionalProperties: false + +examples: + - | + aon: aon { + compatible =3D "thead,th1520-aon"; + mboxes =3D <&mbox_910t 1>; + mbox-names =3D "aon"; + #power-domain-cells =3D <1>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 8e0736dc2ee0..46745cfe9d1f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20427,6 +20427,7 @@ L: linux-riscv@lists.infradead.org S: Maintained T: git https://github.com/pdp7/linux.git F: Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml +F: Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml F: Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml F: Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml F: Documentation/devicetree/bindings/pinctrl/thead,th1520-pinctrl.yaml --=20 2.34.1