From mboxrd@z Thu Jan 1 00:00:00 1970 From: robh@kernel.org (Rob Herring) Date: Wed, 25 Nov 2015 16:46:27 -0600 Subject: [PATCH 2/3] i2c: at91: add DT property "atmel,twd-hold-cycles" to binding In-Reply-To: <1448372862-11912-2-git-send-email-ludovic.desroches@atmel.com> References: <1448372862-11912-1-git-send-email-ludovic.desroches@atmel.com> <1448372862-11912-2-git-send-email-ludovic.desroches@atmel.com> Message-ID: <20151125224627.GA16821@rob-hp-laptop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Nov 24, 2015 at 02:47:41PM +0100, Ludovic Desroches wrote: > From: Wenyou Yang > > Add a DT property "atmel,twd-hold-cycles" to specify the HOLD > filed of TWIHS_CWGR register to increase the TWD hold time. > > Signed-off-by: Wenyou Yang > Signed-off-by: Ludovic Desroches Acked-by: Rob Herring > --- > Documentation/devicetree/bindings/i2c/i2c-at91.txt | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/devicetree/bindings/i2c/i2c-at91.txt b/Documentation/devicetree/bindings/i2c/i2c-at91.txt > index 6e81dc1..c81a0cb 100644 > --- a/Documentation/devicetree/bindings/i2c/i2c-at91.txt > +++ b/Documentation/devicetree/bindings/i2c/i2c-at91.txt > @@ -17,6 +17,9 @@ Optional properties: > - dma-names: should contain "tx" and "rx". > - atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO > capable I2C controllers. > +- atmel,twd-hold-cycles: number of cycles for TWD hold time whose value is > + determinated by (atmel,twd-hold-cycles + 3) x t_peripheral_clock, > + maximum value is 0x1f. > - Child nodes conforming to i2c bus binding > > Examples : > @@ -29,6 +32,7 @@ i2c0: i2c at fff84000 { > #size-cells = <0>; > clocks = <&twi0_clk>; > clock-frequency = <400000>; > + atmel,twd-hold-cycles = <2>; > > 24c512 at 50 { > compatible = "24c512"; > -- > 2.5.0 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html