Messages in this thread | | | Date | Wed, 8 Feb 2017 19:11:30 -0600 | From | Rob Herring <> | Subject | Re: [PATCH 12/13] dt-bindings: auxdisplay: Add bindings for Hitachi HD44780 |
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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
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