On Tue, 02 Aug 2022 00:32:12 -0500, Samuel Holland wrote:

The Allwinner D1 SoC contains two pairs of in-package LDOs. One pair is
for general purpose use. LDOA generally powers the board's 1.8 V rail.
LDOB generally powers the in-package DRAM, where applicable.

The other pair of LDOs powers the analog power domains inside the SoC,
including the audio codec, thermal sensor, and ADCs. These LDOs require
a 0.9 V bandgap voltage reference. The calibration value for the voltage
reference is stored in an eFuse, accessed via an NVMEM cell.

Neither LDO control register is in its own MMIO range; instead, each
regulator device relies on a regmap/syscon exported by its parent.

Signed-off-by: Samuel Holland <samuel@sholland.org>
---

Changes in v2:
 - Remove syscon property from bindings
 - Update binding examples to fix warnings and provide context

 .../allwinner,sun20i-d1-analog-ldos.yaml      | 65 +++++++++++++++++++
 .../allwinner,sun20i-d1-system-ldos.yaml      | 57 ++++++++++++++++
 2 files changed, 122 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-analog-ldos.yaml
 create mode 100644 Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.yaml

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/regulator/allwinner,sun20i-d1-system-ldos.example.dtb:0:0: /example-0/syscon@3000000: failed to match any schema with compatible: ['allwinner,sun20i-d1-system-control']

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.


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