From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Also, sort the properties alphabetically and make indentation consistent. Wording largely taken from i2c-rk3x.txt, thanks guys! Only "i2c-scl-internal-delay-ns" is new, the rest is used by two drivers already and was documented in their driver binding documentation. Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> --- Documentation/devicetree/bindings/i2c/i2c.txt | 31 ++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt index 8a99150ac3a7fd..a00219f5ee0733 100644 --- a/Documentation/devicetree/bindings/i2c/i2c.txt +++ b/Documentation/devicetree/bindings/i2c/i2c.txt @@ -29,12 +29,33 @@ Optional properties These properties may not be supported by all drivers. However, if a driver wants to support one of the below features, it should adapt the bindings below. -- clock-frequency - frequency of bus clock in Hz. -- wakeup-source - device can be used as a wakeup source. +- clock-frequency + frequency of bus clock in Hz. -- interrupts - interrupts used by the device. -- interrupt-names - "irq" and "wakeup" names are recognized by I2C core, - other names are left to individual drivers. +- i2c-scl-falling-time-ns + Number of nanoseconds the SCL signal takes to fall; t(f) in the I2C + specification. + +- i2c-scl-internal-delay-ns + Number of nanoseconds the IP core additionally needs to setup SCL. + +- i2c-scl-rising-time-ns + Number of nanoseconds the SCL signal takes to rise; t(r) in the I2C + specification. + +- i2c-sda-falling-time-ns + Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C + specification. + +- interrupts + interrupts used by the device. + +- interrupt-names + "irq" and "wakeup" names are recognized by I2C core, other names are + left to individual drivers. + +- wakeup-source + device can be used as a wakeup source. Binding may contain optional "interrupts" property, describing interrupts used by the device. I2C core will assign "irq" interrupt (or the very first -- 2.1.4 -- 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
