Messages in this thread Patch in this message | | | From | Ludovic Desroches <> | Subject | [PATCH 2/3] i2c: at91: add DT property "atmel,twd-hold-cycles" to binding | Date | Tue, 24 Nov 2015 14:47:41 +0100 |
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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> --- 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
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