Hi Maxime, On 14 November 2016 at 06:35, Maxime Ripard <maxime.rip...@free-electrons.com> wrote: > Hi Simon, > > On Fri, Nov 11, 2016 at 09:17:20AM -0700, Simon Glass wrote: >> Hi Maxime, >> >> On 8 November 2016 at 03:06, Maxime Ripard >> <maxime.rip...@free-electrons.com> wrote: >> > Add a bus driver for bitbanging a 1-Wire bus over a GPIO. >> > >> > Signed-off-by: Maxime Ripard <maxime.rip...@free-electrons.com> >> > --- >> > drivers/w1/Kconfig | 6 ++- >> > drivers/w1/Makefile | 1 +- >> > drivers/w1/w1-gpio.c | 160 ++++++++++++++++++++++++++++++++++++++++++++- >> > 3 files changed, 167 insertions(+), 0 deletions(-) >> > create mode 100644 drivers/w1/w1-gpio.c >> > >> > diff --git a/drivers/w1/Kconfig b/drivers/w1/Kconfig >> > index 0c056b4c06a9..ccc3ae15db86 100644 >> > --- a/drivers/w1/Kconfig >> > +++ b/drivers/w1/Kconfig >> > @@ -12,6 +12,12 @@ config W1 >> > >> > if W1 >> > >> > +config W1_GPIO >> > + bool "Enable 1-Wire GPIO bitbanging" >> > + depends on DM_GPIO >> > + help >> > + Emulate a 1-Wire bus using a GPIO. >> >> Any more details? How many GPIOs? Any particular chips that are >> supported? > > 1-Wire works on a single line, hence it's name. You usually have > either a controller (which is quite rare, but some SoCs have one) or > you can bitbang the bus. It's low bandwidth enough that it doesn't > really matter. > > I'm not sure if it answers your question. I'll address your other > comments.
OK thanks - please can you add a bit more detail into the help. Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
