The driver has accepted tcs,tcs4526 since commit 5eee5eced95f
("regulator: fan53555: add tcs4526"), which added the compatible to both
the of_device_id and i2c_device_id tables for the TCS4526, a chip that
reports id 0 rather than the TCS4525's id 12.

The binding was converted to DT schema afterwards, in commit 6cea468b680e
("regulator: dt-bindings: Convert Fairchild FAN53555 to DT schema"), and
only picked up tcs,tcs4525. No in-tree DTS used the 4526 string at the
time, so nothing flagged the omission.

RK3399Pro boards use the TCS4526 for vdd_gpu and vdd_cpu_b, so a DTS
describing them fails dtbs_check today even though the driver binds
correctly.

Add the missing compatible.

Signed-off-by: Rudi Heitbaum <rudi@heitbaum.com>
---
 Documentation/devicetree/bindings/regulator/fcs,fan53555.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/regulator/fcs,fan53555.yaml b/Documentation/devicetree/bindings/regulator/fcs,fan53555.yaml
index 69bae90fc4b2..1c54803d16eb 100644
--- a/Documentation/devicetree/bindings/regulator/fcs,fan53555.yaml
+++ b/Documentation/devicetree/bindings/regulator/fcs,fan53555.yaml
@@ -23,6 +23,7 @@ properties:
           - silergy,syr827
           - silergy,syr828
           - tcs,tcs4525
+          - tcs,tcs4526
       - items:
           - const: rockchip,rk8601
           - const: rockchip,rk8600
-- 
2.53.0

On Mon, 24 Aug 2026 02:27:29 +0000, Rudi Heitbaum wrote:
> dt-bindings: regulator: fan53555: add tcs,tcs4526

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-7.3

Thanks!

[1/1] dt-bindings: regulator: fan53555: add tcs,tcs4526
      https://git.kernel.org/broonie/regulator/c/ca12149896ed

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Acked-by: Conor Dooley <conor.dooley@microchip.com>
pw-bot: not-applicable

On Mon, Aug 24, 2026 at 02:27:29AM +0000, Rudi Heitbaum wrote:
> The driver has accepted tcs,tcs4526 since commit 5eee5eced95f
> ("regulator: fan53555: add tcs4526"), which added the compatible to both
> the of_device_id and i2c_device_id tables for the TCS4526, a chip that
> reports id 0 rather than the TCS4525's id 12.

Please submit patches using subject lines reflecting the style for the
subsystem, this makes it easier for people to identify relevant patches.
Look at what existing commits in the area you're changing are doing and
make sure your subject lines visually resemble what they're doing.
There's no need to resubmit to fix this alone.