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| author |   Sakari Ailus <sakari.ailus@linux.intel.com> | 2025-04-09 11:47:38 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-10 07:17:09 -0400 |
| commit | 7429b67b2447f43aa8bc4f9aacb04b323ad3de15 (patch) | |
| tree | de86642601bd65573b480453f42213e6994cae7b /Documentation/firmware-guide/acpi/dsd/leds.rst | |
| parent | acpi-cpufreq: Fix nominal_freq units to KHz in get_max_boost_ratio() (diff) | |
| download | laptop-kernel-7429b67b2447f43aa8bc4f9aacb04b323ad3de15.tar.xz laptop-kernel-7429b67b2447f43aa8bc4f9aacb04b323ad3de15.zip | |
Documentation: ACPI: Use all-string data node references
commit 6db0261f3776bde01ae916ad8e1cb2ded3ba1a2b upstream.
Document that references to data nodes shall use string-only references
instead of a device reference and a succession of the first package
entries of hierarchical data node references.
Fixes: 9880702d123f ("ACPI: property: Support using strings in reference properties")
Cc: 6.8+ <stable@vger.kernel.org> # 6.8+
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://patch.msgid.link/20250409084738.3657079-1-sakari.ailus@linux.intel.com
[ rjw: Clarifying edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '')
| -rw-r--r-- | Documentation/firmware-guide/acpi/dsd/leds.rst | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/Documentation/firmware-guide/acpi/dsd/leds.rst b/Documentation/firmware-guide/acpi/dsd/leds.rst index 93db592c93c7..a97cd07d49be 100644 --- a/Documentation/firmware-guide/acpi/dsd/leds.rst +++ b/Documentation/firmware-guide/acpi/dsd/leds.rst @@ -15,11 +15,6 @@ Referring to LEDs in Device tree is documented in [video-interfaces], in "flash-leds" property documentation. In short, LEDs are directly referred to by using phandles. -While Device tree allows referring to any node in the tree [devicetree], in -ACPI references are limited to device nodes only [acpi]. For this reason using -the same mechanism on ACPI is not possible. A mechanism to refer to non-device -ACPI nodes is documented in [data-node-ref]. - ACPI allows (as does DT) using integer arguments after the reference. A combination of the LED driver device reference and an integer argument, referring to the "reg" property of the relevant LED, is used to identify @@ -74,7 +69,7 @@ omitted. :: Package () { Package () { "flash-leds", - Package () { ^LED, "led@0", ^LED, "led@1" }, + Package () { "^LED.LED0", "^LED.LED1" }, } } }) |