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Mon, 10 Mar 2025 09:02:17 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20250310090217eusmtrp25434d7b666433bb05eb197ed40b200eb~rZY0T27pH2373823738eusmtrp2Z; Mon, 10 Mar 2025 09:02:17 +0000 (GMT) X-AuditID: cbfec7f4-c39fa70000004fb9-c5-67ceaa99e909 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 30.E5.19920.99AAEC76; Mon, 10 Mar 2025 09:02:17 +0000 (GMT) Received: from AMDC4942.home (unknown [106.210.136.40]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20250310090216eusmtip224d54353dec5bb0b78398c86006803f3~rZYzQVSZl2674426744eusmtip2b; Mon, 10 Mar 2025 09:02:16 +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 v7 1/5] dt-bindings: firmware: thead,th1520: Add support for firmware node Date: Mon, 10 Mar 2025 10:02:07 +0100 Message-Id: <20250310090211.286549-2-m.wilczynski@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250310090211.286549-1-m.wilczynski@samsung.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrBKsWRmVeSWpSXmKPExsWy7djPc7ozV51LN1iz2Mzi2Z2vrBZbf89i t1iz9xyTxfwj51gt7l3awmTxYm8ji0XzsfVsFi9n3WOz2Pt6K7vF5V1z2Cw+9x5htNj2uYXN Yu2Ru+wW67/OZ7J4ebmH2aJtFr/F/z072C2Orw23aNk/hcVB2OPNy5csHoc7vrB73DsxjdVj 06pONo871/aweWxeUu/RsvYYk8f7fVfZPPq2rGL0uNR8nd3j8ya5AO4oLpuU1JzMstQifbsE roxTDUvYC1aJV7ycP5W5gXGJcBcjJ4eEgInE7v/n2bsYuTiEBFYwSvR2b2UESQgJfGGUOLcl HiLxmVFi0d8DTDAd++b1s0IkljNKTNjVBdX+hlHiQuNNNpAqNgEjiQfL54NViQj0M0n0HfkP 5jALPGSUeP2yCcjh4BAWiJG41RAJ0sAioCox6+ljdhCbV8BOYse95VDr5CX2HzzLDGJzCthL vNi4iRGiRlDi5MwnLCA2M1BN89bZzCDzJQS2c0pce/uKGaLZReLW1XVQtrDEq+Nb2CFsGYn/ O+dDLciXeLD1E1RNjcTOnuNQtrXEnXO/2EDuZBbQlFi/Sx8i7Chx718nE0hYQoBP4sZbQYgT +CQmbZvODBHmlehoE4KoVpOY2tMLt/Tcim1QSz0k9u25zjqBUXEWkmdmIXlmFsLeBYzMqxjF U0uLc9NTi43yUsv1ihNzi0vz0vWS83M3MQIT4+l/x7/sYFz+6qPeIUYmDsZDjBIczEoivGrb T6UL8aYkVlalFuXHF5XmpBYfYpTmYFES5120vzVdSCA9sSQ1OzW1ILUIJsvEwSnVwNTHcCdm e4jPhSfKXptzGa0mMJZtY+76sqzNJGuzwpHr2fYzOeZMiP9p90g9lnu1oknmkx053i/K5U1j /11n1O9Yu9iXJSvkxDof/RMX+kq0OpynfQr7G1WbLXrkzqQ7e96eenXu46aU365LuL516i98 LNDx+Ld/yfuN8SwvTp85duRqcgtfvZ/0FscmCZP+7DWC4p9/esktf6yrszb2vfNtsaMTBdo4 DYRu/jW6wypSeu9uLMeK6wyLTkrUX2OOVIzLOMClKCNSqPpz4bnFHPOdLCdt4j1RzvH2Ymjd 6XtuL2uuFX6tXab8a5GJhy3zjMRGp/Zv/RPeb76Y3Lp2p0De1tyz7fUptdGH77ocP6fEUpyR aKjFXFScCACf+9n0+wMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrBIsWRmVeSWpSXmKPExsVy+t/xe7ozV51LN2g8IGbx7M5XVoutv2ex W6zZe47JYv6Rc6wW9y5tYbJ4sbeRxaL52Ho2i5ez7rFZ7H29ld3i8q45bBafe48wWmz73MJm sfbIXXaL9V/nM1m8vNzDbNE2i9/i/54d7BbH14ZbtOyfwuIg7PHm5UsWj8MdX9g97p2Yxuqx aVUnm8eda3vYPDYvqfdoWXuMyeP9vqtsHn1bVjF6XGq+zu7xeZNcAHeUnk1RfmlJqkJGfnGJ rVK0oYWRnqGlhZ6RiaWeobF5rJWRqZK+nU1Kak5mWWqRvl2CXsaphiXsBavEK17On8rcwLhE uIuRk0NCwERi37x+1i5GLg4hgaWMEg/bl7NBJGQkrnW/ZIGwhSX+XOtigyh6xSix8fpmRpAE m4CRxIPl88G6RQQWMklcnbKBGSTBLPCUUWLbDXEQW1ggSmL9jrtMIDaLgKrErKeP2UFsXgE7 iR33ljNBbJCX2H/wLFgvp4C9xIuNm8AWCIHUdL9jhagXlDg58wkLxHx5ieats5knMArMQpKa hSS1gJFpFaNIamlxbnpusaFecWJucWleul5yfu4mRmAUbzv2c/MOxnmvPuodYmTiYDzEKMHB rCTCq7b9VLoQb0piZVVqUX58UWlOavEhRlOguycyS4km5wPTSF5JvKGZgamhiZmlgamlmbGS OK/b5fNpQgLpiSWp2ampBalFMH1MHJxSDUxht1PXVvDb767p5i9RKqzKOewo9u9AvELoFD/T uli9gz+CDKKu28/bJfp32zWFkvNPs63ZuNOTl2hVHPnKdTDVaMPH2zLGdv1WS2tSd1UsWyj8 z0F+wjeegEkxEcx2Qi+X5dg1+L0Tf5nZfitCa14nv6ilqaTthfJbLV8V+JcWik+e4zfTp3tP o1z9svX3d8RfatfnFio7Pzs+lq3a1yN0yZPkmikLz82z7fmc8alT76vgrE/KexulW36eVw1h N9syN/i1/3ybvkZuzRveArf2fS+9ZmkVuVVrluwvTaNWw8eWoX3PNt/hqdB+0WBzz3bG1tDD j0O/879YPX2F5KGX1axnZd3spJW3z9R7rMRSnJFoqMVcVJwIAC/heFhrAwAA X-CMS-MailID: 20250310090217eucas1p2051d00809a53d8daca663c8ef8d78dc8 X-Msg-Generator: CA X-RootMTR: 20250310090217eucas1p2051d00809a53d8daca663c8ef8d78dc8 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20250310090217eucas1p2051d00809a53d8daca663c8ef8d78dc8 References: <20250310090211.286549-1-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.yaml 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 managing + 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 executes + 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 = "thead,th1520-aon"; + mboxes = <&mbox_910t 1>; + mbox-names = "aon"; + #power-domain-cells = <1>; + }; diff --git a/MAINTAINERS b/MAINTAINERS index ed7aa6867674..15f4bc618064 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