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author | Sascha Hauer <s.hauer@pengutronix.de> | 2016-02-03 10:25:36 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2016-02-04 08:40:36 +0100 |
commit | 0ff58575c9d66f660886387c2e68d8c5c724e87b (patch) | |
tree | 4a889d1478da83ae46db96f5c049872cdb90eeb6 /dts/Bindings/i2c/i2c.txt | |
parent | a0da52f83c36a81984e0fca4b75d522b955df267 (diff) | |
download | barebox-0ff58575c9d66f660886387c2e68d8c5c724e87b.tar.gz barebox-0ff58575c9d66f660886387c2e68d8c5c724e87b.tar.xz |
dts: update to v4.5-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/i2c/i2c.txt')
-rw-r--r-- | dts/Bindings/i2c/i2c.txt | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/dts/Bindings/i2c/i2c.txt b/dts/Bindings/i2c/i2c.txt index 8a99150ac3..c8d977ed84 100644 --- a/dts/Bindings/i2c/i2c.txt +++ b/dts/Bindings/i2c/i2c.txt @@ -29,12 +29,38 @@ 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. + +- multi-master + states that there is another master active on this bus. The OS can use + this information to adapt power management to keep the arbitration awake + all the time, for example. + +- 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 |