Merge tag 'drm-misc-next-2025-05-08' of... (f9fa0122) · Commits · git / linux-net

Documentation/ABI/stable/sysfs-class-backlight

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		@@ -26,7 +26,12 @@ Date: March 2006
		KernelVersion: 2.6.17
		Contact: Richard Purdie <rpurdie@rpsys.net>
		Description:
		Show the actual brightness by querying the hardware.
		Show the actual brightness by querying the hardware. Due
		to implementation differences in hardware this may not
		match the value in 'brightness'. For example some hardware
		may treat blanking differently or have custom power saving
		features. Userspace should generally use the values in
		'brightness' to make decisions.
		Users: HAL

		What: /sys/class/backlight/<backlight>/max_brightness

+5 −5

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		@@ -652,7 +652,7 @@ Generic FourCC code
		-------------------

		::
		%p4c[hnlb] gP00 (0x67503030)
		%p4c[h[R]lb] gP00 (0x67503030)

		Print a generic FourCC code, as both ASCII characters and its numerical
		value as hexadecimal.
		@@ -660,23 +660,23 @@ value as hexadecimal.
		The generic FourCC code is always printed in the big-endian format,
		the most significant byte first. This is the opposite of V4L/DRM FourCCs.

		The additional ``h``, ``n``, ``l``, and ``b`` specifiers define what
		The additional ``h``, ``hR``, ``l``, and ``b`` specifiers define what
		endianness is used to load the stored bytes. The data might be interpreted
		using the host byte order, network byte order, little-endian, or big-endian.
		using the host, reversed host byte order, little-endian, or big-endian.

		Passed by reference.

		Examples for a little-endian machine, given &(u32)0x67503030::

		%p4ch gP00 (0x67503030)
		%p4cn 00Pg (0x30305067)
		%p4chR 00Pg (0x30305067)
		%p4cl gP00 (0x67503030)
		%p4cb 00Pg (0x30305067)

		Examples for a big-endian machine, given &(u32)0x67503030::

		%p4ch gP00 (0x67503030)
		%p4cn 00Pg (0x30305067)
		%p4chR 00Pg (0x30305067)
		%p4cl 00Pg (0x30305067)
		%p4cb gP00 (0x67503030)

0 → 100644

+65 −0

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		# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
		%YAML 1.2
		---
		$id: http://devicetree.org/schemas/display/panel/boe,td4320.yaml#
		$schema: http://devicetree.org/meta-schemas/core.yaml#

		title: BOE TD4320 MIPI-DSI panels

		maintainers:
		- Barnabas Czeman <barnabas.czeman@mainlining.org>

		description:
		BOE TD4320 6.3" 1080x2340 panel found in Xiaomi Redmi Note 7 smartphone.

		allOf:
		- $ref: panel-common.yaml#

		properties:
		compatible:
		items:
		- const: boe,td4320

		reg:
		maxItems: 1

		iovcc-supply:
		description: I/O voltage rail

		vsn-supply:
		description: Negative source voltage rail

		vsp-supply:
		description: Positive source voltage rail

		required:
		- compatible
		- reg
		- reset-gpios
		- port

		unevaluatedProperties: false

		examples:
		- \|
		#include <dt-bindings/gpio/gpio.h>

		dsi {
		#address-cells = <1>;
		#size-cells = <0>;

		panel@0 {
		compatible = "boe,td4320";
		reg = <0>;
		backlight = <&backlight>;
		reset-gpios = <&tlmm 45 GPIO_ACTIVE_LOW>;

		port {
		panel_in: endpoint {
		remote-endpoint = <&dsi_out>;
		};
		};
		};
		};

		...

+1 −0

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		@@ -23,6 +23,7 @@ properties:
		maxItems: 1

		backlight: true
		port: true
		reset-gpios: true
		iovcc-supply:
		description: regulator that supplies the iovcc voltage

+1 −0

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		@@ -22,6 +22,7 @@ properties:
		maxItems: 1

		backlight: true
		port: true
		reset-gpios: true
		iovcc-supply:
		description: regulator that supplies the iovcc voltage