Re: [PATCH 2/2] dt-binding: spi: Document Renesas R-Car RPC controller bindings

[Marek Vasut]

On 11/20/2018 06:42 AM, masonccyang@xxxxxxxxxxx wrote:
> Hi Marek,
> 
> Marek Vasut <marek.vasut@xxxxxxxxx> åå 2018/11/19 äå 09:49:31 äåå:
> 
>> Marek Vasut <marek.vasut@xxxxxxxxx>
>> 2018/11/19 äå 09:49
>>
>> To
>>
>> Mason Yang <masonccyang@xxxxxxxxxxx>, broonie@xxxxxxxxxx,
>> tpiepho@xxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-
>> spi@xxxxxxxxxxxxxxx, linux-renesas-soc@xxxxxxxxxxxxxxx, Simon Horman
>> <horms@xxxxxxxxxxxx>,
>>
>> cc
>>
>> boris.brezillon@xxxxxxxxxxx, juliensu@xxxxxxxxxxx, Geert
>> Uytterhoeven <geert+renesas@xxxxxxxxx>, zhengxunli@xxxxxxxxxxx
>>
>> Subject
>>
>> Re: [PATCH 2/2] dt-binding: spi: Document Renesas R-Car RPC
>> controller bindings
>>
>> On 11/19/2018 11:01 AM, Mason Yang wrote:
>> > Document the bindings used by the Renesas R-Car D3 RPC controller.
>> >
>> > Signed-off-by: Mason Yang <masonccyang@xxxxxxxxxxx>
>> > ---
>> > Â.../devicetree/bindings/spi/spi-renesas-rpc.txt  Â| 33 +++++++++
>> +++++++++++++
>> > Â1 file changed, 33 insertions(+)
>> > Âcreate 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..8286cc8
>> > --- /dev/null
>> > +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
>> > @@ -0,0 +1,33 @@
>> > +Renesas R-Car D3 RPC controller Device Tree Bindings
>> > +----------------------------------------------------
>> > +
>> > +Required properties:
>> > +- compatible: should be "renesas,rpc-r8a77995"
>> > +- #address-cells: should be 1
>> > +- #size-cells: should be 0
>> > +- reg: should contain 2 entries, one for the registers and one
>> for the direct
>> > + Â Â Â mapping area
>> > +- reg-names: should contain "rpc_regs" and "dirmap"
>> > +- interrupts: interrupt line connected to the RPC SPI controller
>>
>> Do you also plan to support the RPC HF mode ? And if so, how would that
>> look in the bindings ? I'd like to avoid having to redesign the bindings
>> later to handle both the SPI and HF modes.
>>
> 
> I patched this RPC SPI/Octa driver is for mx25uw51245g and you may also
> refer to Boris's patch. [1][2][3]

Does this mean the driver is specific to one particular kind of flash ?

> [1] https://patchwork.kernel.org/cover/10638055/
> [2] https://patchwork.kernel.org/patch/10638057/
> [3] https://patchwork.kernel.org/patch/10638085/


-- 
Best regards,
Marek Vasut