Sorry I didn't keep the addition of Jarkko to the CC list.
On Wed, Feb 13, 2019 at 11:24:37AM +0100, Ludovic Desroches wrote: > Hi Wolfram, > > On Mon, Feb 11, 2019 at 02:25:15PM +0100, Wolfram Sang wrote: > > The documentation was forgotten when the feature was added. > > > > Fixes: 4717be73c284 ("i2c: core: Parse SDA hold time from firmware") > > Signed-off-by: Wolfram Sang <wsa+rene...@sang-engineering.com> > > --- > > > > To everyone on CC: I want to confirm here that you use the value really for > > t(hd:sta) and not t(hd:dat). I'd be a little confused otherwise... > > > No in our case, it's t(hd:dat): > TWD is kept unchanged after TWCK falling edge for a > period of (HOLD + 3) × t peripheral clock > > > Ludovic > > > > > Documentation/devicetree/bindings/i2c/i2c.txt | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt > > b/Documentation/devicetree/bindings/i2c/i2c.txt > > index 44efafdfd7f5..b7bc4c4cc2e6 100644 > > --- a/Documentation/devicetree/bindings/i2c/i2c.txt > > +++ b/Documentation/devicetree/bindings/i2c/i2c.txt > > @@ -55,6 +55,10 @@ wants to support one of the below features, it should > > adapt the bindings below. > > Number of nanoseconds the SDA signal takes to fall; t(f) in the I2C > > specification. > > > > +- i2c-sda-hold-time-ns > > + Number of nanoseconds the SDA signal needs to be held; t(hd:sta) in > > + the I2C specification. > > + > > - interrupts > > interrupts used by the device. > > > > -- > > 2.11.0 > >