lkml.org 
[lkml]   [2017]   [Feb]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 12/13] dt-bindings: auxdisplay: Add bindings for Hitachi HD44780
On Mon, Feb 06, 2017 at 03:38:14PM +0100, Geert Uytterhoeven wrote:
> Add DT bindings for an Hitachi HD44780 Character LCD Controller where
> its M6800 bus interface is connected to GPIOs.

Really, you should have a bit-bang M6800 bus driver and binding and then
the binding for the LCD ctrl looks the same whether you are bit-banging
it or not.

That's a bit more work though. Maybe you could split the binding like
this, but keep a monolithic driver for now. The driver can just fetch
the GPIOs from the parent (bus controller) node. And you'd have to work
out probing the driver.

> Memory-mapped configurations are not yet supported.

I guess this would require faulting on some address and then bit-banging
the access. That sounds fun...

Rob

\
 
 \ /
  Last update: 2017-02-09 02:20    [W:0.413 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site