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a8b09e6fe3
make dtbs_check:
arch/arm/boot/dts/renesas/r8a7742-iwg21d-q7.dtb: backlight: 'power-supply' is a required property
From schema: Documentation/devicetree/bindings/leds/backlight/pwm-backlight.yaml
As that backlight device node already has an "enable-gpios" property to
control the power supplied to the backlight, it sounds a bit silly to
have to add a "power-supply" property just to silence this warning. In
addition, as of commit deaeeda205 ("backlight: pwm_bl: Don't rely
on a disabled PWM emiting inactive state"), the Linux driver considers
the power supply optional.
Fix this by synchronizing the bindings with actual driver behavior by
making the "power-supply" optional.
Fixes: deaeeda205 ("backlight: pwm_bl: Don't rely on a disabled PWM emiting inactive state")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/29943059c80c8db0db437f9548f084a67326647b.1684856131.git.geert+renesas@glider.be
Signed-off-by: Lee Jones <lee@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.