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Wed, 05 May 2021 15:17:23 +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 DE7E510002A; Wed, 5 May 2021 15:17:21 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id AA7D22C4206; Wed, 5 May 2021 15:17:21 +0200 (CEST) Received: from localhost (10.75.127.51) 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 0/2] i2c: stm32f7: add SMBus-Alert support Date: Wed, 5 May 2021 15:14:37 +0200 Message-ID: <1620220479-2647-1-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.51] X-ClientProxiedBy: SFHDAG2NODE1.st.com (10.75.127.4) 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_822478_DC0D7E7B X-CRM114-Status: GOOD ( 14.88 ) 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 This serie adds support for SMBus Alert on the STM32F7. A new binding smbus-alert is added in order to differenciate with the existing smbus binding. SMBus-Alert is an optional SMBus feature and SMBA alert control and status logic must be enabled along with SMBALERT# pin configured via pinctrl in the device tree. This is the rational for adding "smbus-alert" property. --- v4: add a new generic smbus-alert property instead of st,smbus-alert update driver to use smbus-alert instead of st,smbus-alert v3: use lore.kernel.org links instead of marc.info v2: When SMBUS alert isn't available on the board (SMBA unused), this logic musn't be enabled. Enabling it unconditionally wrongly lead to get SMBA interrupts. So, add "st,smbus-alert" dedicated binding to have a smbus alert with a consistent pin configuration in DT. Alain Volmat (2): i2c: add binding to mark a bus as supporting SMBus-Alert i2c: stm32f7: add SMBus-Alert support Documentation/devicetree/bindings/i2c/i2c.txt | 7 ++- drivers/i2c/busses/i2c-stm32f7.c | 73 +++++++++++++++++++++++++++ 2 files changed, 78 insertions(+), 2 deletions(-)