lkml.org 
[lkml]   [2018]   [Dec]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2 2/2] dt-binding: spi: Document Renesas R-Car Gen3 RPC controller bindings
From
Date
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

\
 
 \ /
  Last update: 2018-12-05 03:05    [W:0.203 / U:0.816 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site