Messages in this thread | | | Subject | Re: [PATCH v2 2/2] dt-binding: spi: Document Renesas R-Car Gen3 RPC controller bindings | From | Marek Vasut <> | Date | Tue, 4 Dec 2018 19:19:48 +0100 |
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On 12/03/2018 10:18 AM, Mason Yang wrote: > Document the bindings used by the Renesas R-Car Gen3 RPC SPI controller.
RPC is SPI and HF controller, it is not a pure SPI controller.
How does this deal with the HF part ? Keep in mind the bindings are ABI and it will be difficult to redo them later.
> Signed-off-by: Mason Yang <masonccyang@mxic.com.tw> > --- > .../devicetree/bindings/spi/spi-renesas-rpc.txt | 35 ++++++++++++++++++++++ > 1 file changed, 35 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt > > diff --git a/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt > new file mode 100644 > index 0000000..c6c6d9c > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt > @@ -0,0 +1,35 @@ > +Renesas R-Car Gen3 RPC controller Device Tree Bindings > +------------------------------------------------------ > + > +Required properties: > +- compatible: should be "renesas,r8a77995-rpc" > +- #address-cells: should be 1 > +- #size-cells: should be 0 > +- reg: should contain 2 entries, one for the registers and one for the direct > + mapping area > +- reg-names: should contain "rpc_regs" and "dirmap" > +- interrupts: interrupt line connected to the RPC SPI controller
Not a SPI controller.
> +- clock-names: should contain "clk_rpc" > +- clocks: should contain 1 entries for the module's clock > + > +Example: > + > + rpc: spi@ee200000 { > + compatible = "renesas,r8a77995-rpc"; > + reg = <0 0xee200000 0 0x8100>, <0 0x08000000 0 0x4000000>; > + reg-names = "rpc_regs", "dirmap"; > + clocks = <&cpg CPG_MOD 917>; > + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>; > + resets = <&cpg 917>; > + clock-names = "clk_rpc"; > + #address-cells = <1>; > + #size-cells = <0>; > + > + flash@0 { > + compatible = "jedec,spi-nor"; > + reg = <0>; > + spi-max-frequency = <40000000>; > + spi-tx-bus-width = <1>; > + spi-rx-bus-width = <1>; > + }; > + }; >
-- Best regards, Marek Vasut
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