From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jisheng Zhang Subject: Re: [PATCH v3 1/3] dt-bindings: i2c: designware: add optional gpio recovery properties Date: Mon, 17 Sep 2018 11:32:28 +0800 Message-ID: <20180917113228.43c9b8dc@xhacker.debian> References: <20180917112633.252c591c@xhacker.debian> <20180917112741.7c3d6514@xhacker.debian> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180917112741.7c3d6514@xhacker.debian> Sender: linux-kernel-owner@vger.kernel.org To: Jarkko Nikula , Andy Shevchenko , Mika Westerberg , Wolfram Sang , Rob Herring , Mark Rutland Cc: linux-arm-kernel , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org List-Id: linux-i2c@vger.kernel.org + DT maintainers On Mon, 17 Sep 2018 11:27:41 +0800 Jisheng Zhang wrote: > Document the scl-gpios and sda-gpios properties for bus recovery. > > Signed-off-by: Jisheng Zhang > --- > Documentation/devicetree/bindings/i2c/i2c-designware.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt > index fbb0a6d8b964..1d6a6a8061ba 100644 > --- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt > +++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt > @@ -20,6 +20,10 @@ Optional properties : > - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds. > This value which is by default 300ns is used to compute the tHIGH period. > > + - scl-gpios: specify the gpio of the SCL line for gpio recovery > + > + - sda-gpios: specify the gpio of the SDA line for gpio recovery > + > Examples : > > i2c@f0000 { > @@ -42,6 +46,8 @@ Examples : > i2c-sda-hold-time-ns = <300>; > i2c-sda-falling-time-ns = <300>; > i2c-scl-falling-time-ns = <300>; > + scl-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>; > + sda-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>; > }; > > i2c@1120000 {