From patchwork Mon Apr 28 21:07:38 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roman Kisel X-Patchwork-Id: 885774 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 30C0E7B3E1; Mon, 28 Apr 2025 21:07:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745874471; cv=none; b=Wptq4wx3HZHnWiYbHrGsmsjXBBaJrKf0CAbY6DP9ZaARmwC2fqzNPFewdpAym74uICP9TDmettr8nWlJhPcxwVaIt9oRPfJdh6jMXpa1JSPSCF70yC0Yc5ZB6VgDvq4XGkeutP3PtfkjtPg094gvmNm22N3Qs1HbT7Hmt8xER94= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745874471; c=relaxed/simple; bh=si2Bw5IJPROKqW+kfwLdvOeV0XJuRpoCT2Z9dvgX1pg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VYy5jDBBSdTG+GUFlpVtfKfHMyx1kjZ8Z7VLEl5GTW8zOCKxJv7JNzXzygw4zCIl2icawogS48uLqVUPH6yBOG783Rq4+HFIlSxYpybxm4PTtq8awBj4yIEgJ6vwRXhY8HYk8hcFB5W4STZMehe57I6DakXv6XoklbZUACpdpC8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b=Xrw8QVTf; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.b="Xrw8QVTf" Received: from romank-3650.corp.microsoft.com (unknown [131.107.1.188]) by linux.microsoft.com (Postfix) with ESMTPSA id 5C6B7211AD21; Mon, 28 Apr 2025 14:07:46 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 5C6B7211AD21 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1745874466; bh=GR2GmT7fACAPkitPj8eTbd2Bh3lgrZjljTTbjCNGmE4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xrw8QVTfiTdtUP3Y8XlV6NXORxmGnKRHs6fWUJthCc88pfIoxm/IszIEQ4yT7dF+J IRdTAY+Xw1gv2O6QZ4w+YGqJlEbcz4XZOTz7bjcQJb1wy+VDB9tqoau7RBV0LeNFr1 ag/ISihJr8moPxOFn8Xf1tDPZgBBXcfdsNbWhxQI= From: Roman Kisel To: arnd@arndb.de, bhelgaas@google.com, bp@alien8.de, catalin.marinas@arm.com, conor+dt@kernel.org, dave.hansen@linux.intel.com, decui@microsoft.com, haiyangz@microsoft.com, hpa@zytor.com, joey.gouly@arm.com, krzk+dt@kernel.org, kw@linux.com, kys@microsoft.com, lenb@kernel.org, lpieralisi@kernel.org, manivannan.sadhasivam@linaro.org, mark.rutland@arm.com, maz@kernel.org, mingo@redhat.com, oliver.upton@linux.dev, rafael@kernel.org, robh@kernel.org, ssengar@linux.microsoft.com, sudeep.holla@arm.com, suzuki.poulose@arm.com, tglx@linutronix.de, wei.liu@kernel.org, will@kernel.org, yuzenghui@huawei.com, linux-hyperv@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, linux-arch@vger.kernel.org, x86@kernel.org Cc: apais@microsoft.com, benhill@microsoft.com, bperkins@microsoft.com, sunilmut@microsoft.com Subject: [PATCH hyperv-next v9 07/11] dt-bindings: microsoft,vmbus: Add interrupt and DMA coherence properties Date: Mon, 28 Apr 2025 14:07:38 -0700 Message-ID: <20250428210742.435282-8-romank@linux.microsoft.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250428210742.435282-1-romank@linux.microsoft.com> References: <20250428210742.435282-1-romank@linux.microsoft.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To boot in the VTL mode, VMBus on arm64 needs interrupt description which the binding documentation lacks. The transactions on the bus are DMA coherent which is not mentioned as well. Add the interrupt property and the DMA coherence property to the VMBus binding. Update the example to match that. Fix typos. Signed-off-by: Roman Kisel Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/bus/microsoft,vmbus.yaml | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml b/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml index a8d40c766dcd..0bea4f5287ce 100644 --- a/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml +++ b/Documentation/devicetree/bindings/bus/microsoft,vmbus.yaml @@ -10,8 +10,8 @@ maintainers: - Saurabh Sengar description: - VMBus is a software bus that implement the protocols for communication - between the root or host OS and guest OSs (virtual machines). + VMBus is a software bus that implements the protocols for communication + between the root or host OS and guest OS'es (virtual machines). properties: compatible: @@ -25,9 +25,16 @@ properties: '#size-cells': const: 1 + dma-coherent: true + + interrupts: + maxItems: 1 + description: Interrupt is used to report a message from the host. + required: - compatible - ranges + - interrupts - '#address-cells' - '#size-cells' @@ -35,6 +42,8 @@ additionalProperties: false examples: - | + #include + #include soc { #address-cells = <2>; #size-cells = <1>; @@ -49,6 +58,9 @@ examples: #address-cells = <2>; #size-cells = <1>; ranges = <0x0f 0xf0000000 0x0f 0xf0000000 0x10000000>; + dma-coherent; + interrupt-parent = <&gic>; + interrupts = ; }; }; };