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auxdisplay: hd44780: Fix DT properties to include units of measurement

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DT properties specifying physical properties should contain appropriate
suffices indicating the units of measurement.

Hence amend the HD44780 DT bindings to add "chars" suffixes to the
"display-height" and "display-width" properties, and update the driver
to parse them.

Fixes: dd9502a9e9 ("dt-bindings: auxdisplay: Add bindings for Hitachi HD44780")
Fixes: d47d88361f ("auxdisplay: Add HD44780 Character LCD support")
Signed-off-by: Geert Uytterhoeven <[email protected]>
Acked-by: Rob Herring <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Geert Uytterhoeven 2017-03-23 14:25:37 +01:00 • committed by Greg Kroah-Hartman
commit c7c3f096eb
2 changed files with 9 additions and 7 deletions
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5
drivers/auxdisplay/hd44780.c
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@ -264,10 +264,11 @@ static int hd44780_probe(struct platform_device *pdev)
}
/* Required properties */
ret = device_property_read_u32(dev, "display-height", &lcd->height);
ret = device_property_read_u32(dev, "display-height-chars",
&lcd->height);
if (ret)
goto fail;
ret = device_property_read_u32(dev, "display-width", &lcd->width);
ret = device_property_read_u32(dev, "display-width-chars", &lcd->width);
if (ret)
goto fail;