On Sat, 10 Sep 2022 22:56:48 +0300, Serge Semin wrote:

Baikal-T1 DDR controller is based on the DW uMCTL2 DDRC IP-core v2.51a
with up to DDR3 protocol capability and 32-bit data bus + 8-bit ECC. There
are individual IRQs for each ECC and DFI events. The dedicated scrubber
clock source is absent since it's fully synchronous to the core clock.
In addition to that the DFI-DDR PHY CSRs can be accessed via a separate
registers space.

Signed-off-by: Serge Semin <redacted>

---

Changelog v2:
- Keep the alphabetically ordered compatible strings list. (@Krzysztof)
- Fix grammar nitpicks in the patch log. (@Krzysztof)
- Drop the PHY CSR region. (@Rob)
- Move the device bindings to the separate DT-schema.
---
 .../memory-controllers/baikal,bt1-ddrc.yaml   | 91 +++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/memory-controllers/baikal,bt1-ddrc.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/memory-controllers/baikal,bt1-ddrc.yaml: Unable to find schema file matching $id: http://devicetree.org/schemas/memory-controllers/snps,dw-umctl2-ddrc.yaml
Error: Documentation/devicetree/bindings/memory-controllers/baikal,bt1-ddrc.example.dts:41.30-31 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:384: Documentation/devicetree/bindings/memory-controllers/baikal,bt1-ddrc.example.dtb] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1420: dt_binding_check] Error 2

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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