From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 16 Aug 2018 10:46:38 +0200 (CEST) Received: from mail.bootlin.com ([62.4.15.54]:50904 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23994601AbeHPIppUOGPu (ORCPT ); Thu, 16 Aug 2018 10:45:45 +0200 Received: by mail.bootlin.com (Postfix, from userid 110) id 5695F20F25; Thu, 16 Aug 2018 10:45:39 +0200 (CEST) Received: from localhost (unknown [78.250.249.73]) by mail.bootlin.com (Postfix) with ESMTPSA id 044FD2079D; Thu, 16 Aug 2018 10:45:28 +0200 (CEST) From: Alexandre Belloni To: Wolfram Sang , Jarkko Nikula , James Hogan Cc: Paul Burton , Andy Shevchenko , Mika Westerberg , linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, Thomas Petazzoni , Allan Nielsen , Alexandre Belloni , Rob Herring Subject: [PATCH v4 4/7] i2c: designware: document MSCC Ocelot bindings Date: Thu, 16 Aug 2018 10:45:18 +0200 Message-Id: <20180816084521.16289-5-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180816084521.16289-1-alexandre.belloni@bootlin.com> References: <20180816084521.16289-1-alexandre.belloni@bootlin.com> Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 65597 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: alexandre.belloni@bootlin.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips Document bindings for the Microsemi Ocelot integration of the Designware I2C controller. Cc: Rob Herring Signed-off-by: Alexandre Belloni --- Documentation/devicetree/bindings/i2c/i2c-designware.txt | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt index fbb0a6d8b964..3e4bcc2fb6f7 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt @@ -3,6 +3,7 @@ Required properties : - compatible : should be "snps,designware-i2c" + or "mscc,ocelot-i2c" with "snps,designware-i2c" for fallback - reg : Offset and length of the register set for the device - interrupts : where IRQ is the interrupt number. @@ -11,8 +12,12 @@ Recommended properties : - clock-frequency : desired I2C bus clock frequency in Hz. Optional properties : + - reg : for "mscc,ocelot-i2c", a second register set to configure the SDA hold + time, named ICPU_CFG:TWI_DELAY in the datasheet. + - i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds. - This option is only supported in hardware blocks version 1.11a or newer. + This option is only supported in hardware blocks version 1.11a or newer and + on Microsemi SoCs ("mscc,ocelot-i2c" compatible). - i2c-scl-falling-time-ns : should contain the SCL falling time in nanoseconds. This value which is by default 300ns is used to compute the tLOW period. -- 2.18.0