Re: [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml
From: Andreas Kemnade <andreas@kemnade.info>
Date: 2021-11-17 21:40:08
Also in:
linux-arm-kernel, linux-hwmon, linux-pm, lkml
On Wed, 10 Nov 2021 22:29:41 +1000 Alistair Francis [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Initial support for the Silergy SY7636A Power Management chip and regulator. Signed-off-by: Alistair Francis <redacted> Reviewed-by: Rob Herring <robh@kernel.org> Acked-for-MFD-by: Lee Jones [off-list ref] --- .../bindings/mfd/silergy,sy7636a.yaml | 79 +++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/silergy,sy7636a.yamldiff --git a/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml b/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml new file mode 100644 index 000000000000..0566f9498e2f --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
[...]
+ regulators: + type: object + + properties: + compatible: + const: silergy,sy7636a-regulator + + vcom: + type: object + $ref: /schemas/regulator/regulator.yaml# + properties: + regulator-name: + const: vcom +
hmm, this is what? If I understand it correctly, vcom means some voltage for compensation. On other comparable pmics (e.g. TPS65185 which has also a sane public datasheet, MAX17135) I have seen some methods to measure a voltage while the display is doing something defined and then program this voltage non-volatile for compensation during manufacturing. If I understand the code correctly all the bunch of voltages are powered up if this one is enabled. So at least a description should be suitable. The other comparable PMICs have at least regulators named VCOM, DISPLAY (controls several regulators, started with delays configured via registers) and V3P3. MAX17135 source can be found in NXP kernels, TPS65185 in Kobo vendor kernels. So I would expect to see something similar here and a description or at least not such a misleading name as vcom if it is for some reason not feasible to separate the regulators. Regards, Andreas