linux-kernel - Re: [PATCH 2/4] ARM: dts: omap4-droid4: Update backlight dt properties

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Date:   Wed, 3 Apr 2019 17:03:16 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Dan Murphy <dmurphy@...com>
Cc:     robh+dt@...nel.org, jacek.anaszewski@...il.com, pavel@....cz,
        lee.jones@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org
Subject: Re: [PATCH 2/4] ARM: dts: omap4-droid4: Update backlight dt
 properties

Hi,

* Dan Murphy <dmurphy@...com> [190321 14:29]:
> Update the properties for the lm3532 device node for droid4.
> With this change the backlight LED string and the keypad
> LED strings will be controlled separately.

We also need the following incremental change to prevent
panel-dsi-cm trying to use of_find_backlight_by_node().
We have ledtrig-backlight use FB_EVENT_BLANK, and I
guess more events can be added there as needed.

There should be no dependency to the driver changes with
this patch, so it's probably best that I queue this dts
patch separately. I'll fold in the following change too
assuming no more comments.

Regards,

Tony

8< -----------------
diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts
--- a/arch/arm/boot/dts/omap4-droid4-xt894.dts
+++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts
@@ -214,7 +214,6 @@
 
 		width-mm = <50>;
 		height-mm = <89>;
-		backlight = <&lcd_backlight>;
 
 		panel-timing {
 			clock-frequency = <0>;		/* Calculated by dsi */