Re: [PATCH 0/1] auxdisplay: Add I2C gpio expander example

2021-01-06 Thread Miguel Ojeda
On Wed, Jan 6, 2021 at 1:12 PM Miguel Ojeda wrote: > > - Normally, you will want to use scripts/get_maintainer.pl to know > to whom send a given change. In this case, I am Cc'ing Rob, Geert and > the devicetree mailing list which were missing. (Actually Cc'ing Rob.) Cheers, Miguel

Re: [PATCH 0/1] auxdisplay: Add I2C gpio expander example

2021-01-06 Thread Miguel Ojeda
On Wed, Jan 6, 2021 at 12:37 PM Ralf Schlatterbeck wrote: > > The Hitachi HD44780 is often used together with a PCF8574 based I2C > I/O expander. It was non-obvious to me that the existing parallel > connected version of the auxdisplay driver can already handle this > configuration with

[PATCH 0/1] auxdisplay: Add I2C gpio expander example

2021-01-06 Thread Ralf Schlatterbeck
The Hitachi HD44780 is often used together with a PCF8574 based I2C I/O expander. It was non-obvious to me that the existing parallel connected version of the auxdisplay driver can already handle this configuration with appropriate device tree magic. This patch documents the necessary incantations