Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.18.16 2020-12-10T03:47:10+00:00 2020-12-10T03:47:10+00:00 Stephan Gerhold stephan@gerhold.net 2020-12-10T03:37:46+00:00 urn:sha1:3e730ec11d51283ad62a98436967c01b718132ab The Samsung touchkey controllers are often used with external pull-up for the interrupt line and the I2C lines, so we might need to enable a regulator to bring the lines into usable state. Otherwise, this might cause spurious interrupts and reading from I2C will fail. Document support for a "vddio-supply" that is enabled by the tm2-touchkey driver so that the regulator gets enabled when needed. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20201203131242.44397-2-stephan@gerhold.net Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 2020-12-10T03:47:08+00:00 Stephan Gerhold stephan@gerhold.net 2020-12-10T03:37:14+00:00 urn:sha1:31a10f5b4b9ff323668c37173695ea463fc89863 Convert the device tree bindings for tm2-touchkey to the YAML format. While we're at it, clarify the descriptions a bit to make it clear that this driver can be used for many different MCUs that all implement a similar I2C protocol. Depending on the MCU the voltage requirements may be different, on some devices the controller uses 2.2V, 2.8V or even 3.3V for vcc-supply instead of 1.8V. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20201203131242.44397-1-stephan@gerhold.net Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>