Messages in this thread Patch in this message | | | From | Ludovic Desroches <> | Subject | [PATCH 2/2] i2c: at91: update documentation for new "atmel,twd-hold-cycles" property | Date | Wed, 30 Sep 2015 10:47:11 +0200 |
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From: Wenyou Yang <wenyou.yang@atmel.com>
Add a DT property "atmel,twd-hold-cycles" to specify the HOLD field 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> --- Documentation/devicetree/bindings/i2c/i2c-at91.txt | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c-at91.txt b/Documentation/devicetree/bindings/i2c/i2c-at91.txt index 6e81dc1..f14c0b2 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-at91.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-at91.txt @@ -17,6 +17,8 @@ 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: increase the TWD hold time by + (atmel,twd-hold-cycles + 3) x t_periperal_clk, maximum value is 0x1f. - Child nodes conforming to i2c bus binding Examples : @@ -29,6 +31,7 @@ i2c0: i2c@fff84000 { #size-cells = <0>; clocks = <&twi0_clk>; clock-frequency = <400000>; + atmel,twd-hold-cycles = <2>; 24c512@50 { compatible = "24c512"; -- 2.5.0
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