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Wed, 05 May 2021 15:17:22 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 28866100034; Wed, 5 May 2021 15:17:22 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 13B8D2C4206; Wed, 5 May 2021 15:17:22 +0200 (CEST) Received: from localhost (10.75.127.49) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 5 May 2021 15:17:21 +0200 From: Alain Volmat To: , CC: , , , , , , , , , , Subject: [PATCH v4 1/2] i2c: add binding to mark a bus as supporting SMBus-Alert Date: Wed, 5 May 2021 15:14:38 +0200 Message-ID: <1620220479-2647-2-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1620220479-2647-1-git-send-email-alain.volmat@foss.st.com> References: <1620220479-2647-1-git-send-email-alain.volmat@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391, 18.0.761 definitions=2021-05-05_07:2021-05-05, 2021-05-05 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210505_061732_822919_094B7C84 X-CRM114-Status: GOOD ( 16.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Since SMBus-Alert is an optional feature of SMBUS which requires an additional pin, the smbus binding cannot be used to indicate its support. Add an additional smbus-alert binding specific for it and update the description text of smbus to avoid mentioning SMBus-Alert Signed-off-by: Alain Volmat Acked-by: Rob Herring --- Documentation/devicetree/bindings/i2c/i2c.txt | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index df41f72afc87..b864916e087f 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -89,8 +89,11 @@ wants to support one of the below features, it should adapt these bindings. - smbus states that additional SMBus restrictions and features apply to this bus. - Examples of features are SMBusHostNotify and SMBusAlert. Examples of - restrictions are more reserved addresses and timeout definitions. + An example of feature is SMBusHostNotify. Examples of restrictions are + more reserved addresses and timeout definitions. + +- smbus-alert + states that the optional SMBus-Alert feature apply to this bus. Required properties (per child device) --------------------------------------