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Mon, 02 Jun 2025 15:23:15 -0700 (PDT) Received: from stbirv-lnx-1.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23506d19bfesm75565195ad.253.2025.06.02.15.23.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Jun 2025 15:23:15 -0700 (PDT) From: Justin Chen To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: florian.fainelli@broadcom.com, conor+dt@kernel.org, bcm-kernel-feedback-list@broadcom.com, krzk+dt@kernel.org, robh@kernel.org, jassisinghbrar@gmail.com, Justin Chen , Krzysztof Kozlowski Subject: [PATCH v5 1/2] dt-bindings: mailbox: Add support for bcm74110 Date: Mon, 2 Jun 2025 15:23:10 -0700 Message-Id: <20250602222311.2940850-2-justin.chen@broadcom.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250602222311.2940850-1-justin.chen@broadcom.com> References: <20250602222311.2940850-1-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. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Justin Chen Reviewed-by: Florian Fainelli --- v5 No changes v4 Dropped minItems from interrupts v3 Added list for interrupts. Corrected dts example. Fixed ordering and naming. 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 | 64 +++++++++++++++++++ 1 file changed, 64 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..750cc96edb46 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/brcm,bcm74110-mbox.yaml @@ -0,0 +1,64 @@ +# 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: + items: + - description: RX doorbell and watermark interrupts + - description: TX doorbell and watermark interrupts + + "#mbox-cells": + const: 2 + description: + The first cell is channel type and second cell is shared memory slot + + brcm,rx: + $ref: /schemas/types.yaml#/definitions/uint32 + description: RX Mailbox number + + brcm,tx: + $ref: /schemas/types.yaml#/definitions/uint32 + description: TX Mailbox number + +required: + - compatible + - reg + - interrupts + - "#mbox-cells" + - brcm,rx + - brcm,tx + +additionalProperties: false + +examples: + - | + #include + #include + + mailbox@a552000 { + compatible =3D "brcm,bcm74110-mbox"; + reg =3D <0xa552000 0x1104>; + interrupts =3D , + ; + #mbox-cells =3D <0x2>; + brcm,rx =3D <0x7>; + brcm,tx =3D <0x6>; + }; --=20 2.34.1