On 27/05/12 03:10, Marek Vasut wrote:
This patch configures the I2C bus timing registers according to information passed via DT. Currently, 100kHz and 400kHz modes are supported. Signed-off-by: Marek Vasut<marex@xxxxxxx> Cc: Detlev Zundel<dzu@xxxxxxx> CC: Dong Aisheng<b29396@xxxxxxxxxxxxx> CC: Fabio Estevam<fabio.estevam@xxxxxxxxxxxxx> Cc: Linux ARM kernel<linux-arm-kernel@xxxxxxxxxxxxxxxxxxx> Cc: linux-i2c@xxxxxxxxxxxxxxx CC: Sascha Hauer<s.hauer@xxxxxxxxxxxxxx> CC: Shawn Guo<shawn.guo@xxxxxxxxxx> Cc: Stefano Babic<sbabic@xxxxxxx> CC: Uwe Kleine-König<u.kleine-koenig@xxxxxxxxxxxxxx> Cc: Wolfgang Denk<wd@xxxxxxx> Cc: Wolfram Sang<w.sang@xxxxxxxxxxxxxx> --- Documentation/devicetree/bindings/i2c/i2c-mxs.txt | 1 + arch/arm/boot/dts/imx28.dtsi | 2 + drivers/i2c/busses/i2c-mxs.c | 64 +++++++++++++++++++++ 3 files changed, 67 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c-mxs.txt b/Documentation/devicetree/bindings/i2c/i2c-mxs.txt index 1bfc02d..790b5c6 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mxs.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-mxs.txt @@ -4,6 +4,7 @@ Required properties: - compatible: Should be "fsl,<chip>-i2c" - reg: Should contain registers location and length - interrupts: Should contain ERROR and DMA interrupts +- speed: Speed of the bus in kHz (400 or 100 are supported) Examples: diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi index 4634cb8..d927155 100644 --- a/arch/arm/boot/dts/imx28.dtsi +++ b/arch/arm/boot/dts/imx28.dtsi @@ -381,6 +381,7 @@ compatible = "fsl,imx28-i2c"; reg =<0x80058000 2000>; interrupts =<111 68>; + fsl,speed =<400>; status = "disabled"; }; @@ -390,6 +391,7 @@ compatible = "fsl,imx28-i2c"; reg =<0x8005a000 2000>; interrupts =<110 69>; + fsl,speed =<400>; status = "disabled"; };
Is there not a standard speed setting in the i2c binding? -- Ben Dooks http://www.codethink.co.uk/ Senior Engineer Codethink - Providing Genius -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
