On Wed, Mar 28, 2018 at 11:25:34AM +0000, Janek Kotas wrote:
> This patch adds a device tree platform
> driver description for Cadence UFS Controller.
You have exactly the same subject for both patches. Don't do that. For
bindings, the preferred subject prefix is "dt-bindings: ufs: ".
>
> Signed-off-by: Jan Kotas <jank@xxxxxxxxxxx>
> ---
> .../devicetree/bindings/ufs/cdns-ufs-pltfrm.txt | 31 ++++++++++++++++++++
> 1 files changed, 31 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/ufs/cdns-ufs-pltfrm.txt
>
> diff --git a/Documentation/devicetree/bindings/ufs/cdns-ufs-pltfrm.txt b/Documentation/devicetree/bindings/ufs/cdns-ufs-pltfrm.txt
> new file mode 100644
> index 0000000..d10229d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ufs/cdns-ufs-pltfrm.txt
rename to cdns,ufshc.txt
> @@ -0,0 +1,31 @@
> +* Cadence Universal Flash Storage (UFS) Controller
> +
> +UFS nodes are defined to describe on-chip UFS host controllers.
> +Each UFS controller instance should have its own node.
> +
> +Required properties:
> +- compatible : compatible list, contains the following controller:
> + "cdns,ufshc"
> + complemented with the JEDEC version:
> + "jedec,ufs-2.0"
> +
> +- reg : registers mapping
> +- interrupts : interrupts mapping
How many?
> +- clocks : List of phandle and clock specifier pairs.
> +- clock-names : List of clock input name strings sorted in the same
> + order as the clocks property. "core_clk" is mandatory.
"_clk" is redundant.
Really only one clock for the block? No clock from the PHY? No bus
clock?
> +- freq-table-hz : Array of <min max> operating frequencies stored in the same
> + order as the clocks property. If this property is not
> + defined or a value in the array is "0" then it is assumed
> + that the frequency is set by the parent clock or a
> + fixed rate clock source.
The 'assigned-clocks' property and friends should be able to handle
this.
> +
> +Example:
> + ufs@fd030000 {
> + compatible = "cdns,ufshc", "jedec,ufs-2.0";
> + reg = <0xfd030000 0x10000>;
> + interrupts = <0 1 0>;
> + freq-table-hz = <0 0>;
> + clocks = <&ufs_core_clk 0>;
> + clock-names = "core_clk";
> + };
> --
> 1.7.1
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