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Wed, 02 Apr 2025 15:36:29 -0700 (PDT) Received: from stbirv-lnx-1.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-2cc84bcf5besm190fac.45.2025.04.02.15.36.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Apr 2025 15:36:29 -0700 (PDT) From: Justin Chen To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: florian.fainelli@broadcom.com, conor+dt@kernel.org, krzk+dt@kernel.org, robh@kernel.org, jassisinghbrar@gmail.com, bcm-kernel-feedback-list@broadcom.com, Justin Chen Subject: [PATCH v2 1/2] dt-bindings: mailbox: Add devicetree binding for bcm74110 mbox Date: Wed, 2 Apr 2025 15:36:18 -0700 Message-Id: <20250402223619.358818-2-justin.chen@broadcom.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250402223619.358818-1-justin.chen@broadcom.com> References: <20250402223619.358818-1-justin.chen@broadcom.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 Content-Type: text/plain; charset="utf-8" Add devicetree YAML binding for brcmstb bcm74110 mailbox used for communicating with a co-processor. Signed-off-by: Justin Chen --- v2 Renamed brcm,brcm_{tx|rx} to brcm,{tx|rx}. Removed brcm,shmem node. Not necessary to keep in dt. Fixed example and added scmi node. .../bindings/mailbox/brcm,bcm74110-mbox.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/brcm,bcm74110= -mbox.yaml diff --git a/Documentation/devicetree/bindings/mailbox/brcm,bcm74110-mbox.y= aml b/Documentation/devicetree/bindings/mailbox/brcm,bcm74110-mbox.yaml new file mode 100644 index 000000000000..8c3dfffa515f --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/brcm,bcm74110-mbox.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/brcm,bcm74110-mbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom BCM74110 Mailbox + +maintainers: + - Justin Chen + - Florian Fainelli + +description: Broadcom mailbox hardware first introduced with 74110 + +properties: + compatible: + enum: + - brcm,bcm74110-mbox + + reg: + maxItems: 1 + + interrupts: + maxItems: 2 + + "#mbox-cells": + const: 2 + description: + The first cell is channel type and second cell is shared memory slot + + brcm,tx: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Mailbox transmit doorbell + + brcm,rx: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Mailbox receive doorbell + +required: + - compatible + - reg + - interrupts + - "#mbox-cells" + - brcm,tx + - brcm,rx + +additionalProperties: false + +examples: + - | + #include + + brcm_mailbox: brcm_mailbox@a552000 { + #mbox-cells =3D <0x2>; + brcm,rx =3D <0x7>; + brcm,tx =3D <0x6>; + compatible =3D "brcm,bcm74110-mbox"; + reg =3D <0xa552000 0x1104>; + interrupts =3D <0x0 0x67 0x4>, /* DQM 7 */ + <0x0 0x66 0x4>; /* DQM 6 */ + }; + + scmi { + compatible =3D "arm,scmi"; + mboxes =3D <&brcm_mailbox 0x2 0x0>; + mbox-names =3D "tx"; + shmem =3D <&PMCMBOX>; + #address-cells =3D <0x1>; + #size-cells =3D <0x0>; + }; --=20 2.34.1