Re: [PATCH v3 18/23] dt-bindings: ata: ahci: Add DWC AHCI SATA controller DT schema

Hannes Reinecke
2022-05-12T07:08:23Z

On 5/12/22 01:18, Serge Semin wrote:
> Synopsys AHCI SATA controller is mainly compatible with the generic AHCI
> SATA controller except a few peculiarities and the platform environment
> requirements. In particular it can have one or two reference clocks to
> feed up its AXI/AHB interface and SATA PHYs domain and at least one reset
> control for the application clock domain. In addition to that the DMA
> interface of each port can be tuned up to work with the predefined maximum
> data chunk size. Note unlike generic AHCI controller DWC AHCI can't have
> more than 8 ports. All of that is reflected in the new DWC AHCI SATA
> device DT binding.
>
> Note the DWC AHCI SATA controller DT-schema has been created in a way so
> to be reused for the vendor-specific DT-schemas (see for example the
> "snps,dwc-ahci" compatible string binding). One of which we are about to
> introduce.
>
> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
>
> ---
>
> Changelog v2:
> - Replace min/max constraints of the snps,{tx,rx}-ts-max property with
> enum [ 1, 2, 4, ..., 1024 ]. (@Rob)
> ---
> .../bindings/ata/ahci-platform.yaml | 8 --
> .../bindings/ata/snps,dwc-ahci.yaml | 123 ++++++++++++++++++
> 2 files changed, 123 insertions(+), 8 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
>
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
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