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[ Upstream commit62183863f7] After enabling CONFIG_REGULATOR_DEBUG=y we observer below debug logs. Changes help link VDDCP_A and VDDCPU_B pwm regulator to 12V regulator supply instead of dummy regulator. [ 4.147196] VDDCPU_A: will resolve supply early: pwm [ 4.147216] pwm-regulator regulator-vddcpu-a: Looking up pwm-supply from device tree [ 4.147227] pwm-regulator regulator-vddcpu-a: Looking up pwm-supply property in node /regulator-vddcpu-a failed [ 4.147258] VDDCPU_A: supplied by regulator-dummy [ 4.147288] regulator-dummy: could not add device link regulator.12: -ENOENT [ 4.147353] VDDCPU_A: 721 <--> 1022 mV at 871 mV, enabled [ 4.152014] VDDCPU_B: will resolve supply early: pwm [ 4.152035] pwm-regulator regulator-vddcpu-b: Looking up pwm-supply from device tree [ 4.152047] pwm-regulator regulator-vddcpu-b: Looking up pwm-supply property in node /regulator-vddcpu-b failed [ 4.152079] VDDCPU_B: supplied by regulator-dummy [ 4.152108] regulator-dummy: could not add device link regulator.13: -ENOENT Fixes:c6d29c66e5("arm64: dts: meson-g12b-khadas-vim3: add initial device-tree") Fixes:d14734a04a("arm64: dts: meson-g12b-odroid-n2: enable DVFS") Fixes:3cb74db9b2("arm64: dts: meson: convert ugoos-am6 to common w400 dtsi") Cc: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Anand Moon <linux.amoon@gmail.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Link: https://lore.kernel.org/r/20210919202918.3556-3-linux.amoon@gmail.com Signed-off-by: Sasha Levin <sashal@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.