| Message ID | 1448372862-11912-2-git-send-email-ludovic.desroches@atmel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Nov 24, 2015 at 02:47:41PM +0100, Ludovic Desroches wrote: > From: Wenyou Yang <wenyou.yang@atmel.com> > > 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 <wenyou.yang@atmel.com> > Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Rob Herring <robh@kernel.org> > --- > 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@fff84000 { > #size-cells = <0>; > clocks = <&twi0_clk>; > clock-frequency = <400000>; > + atmel,twd-hold-cycles = <2>; > > 24c512@50 { > compatible = "24c512"; > -- > 2.5.0 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
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@fff84000 { #size-cells = <0>; clocks = <&twi0_clk>; clock-frequency = <400000>; + atmel,twd-hold-cycles = <2>; 24c512@50 { compatible = "24c512";