Hi Geert, > -----Original Message----- > From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> > Sent: 10 February 2025 14:15 > Subject: Re: [PATCH 02/14] dt-bindings: serial: Document sci bindings for the Renesas RZ/T2H (a.k.a > r9a09g077) SoC > > Hi Biju, > > On Mon, 10 Feb 2025 at 14:19, Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote: > > > -----Original Message----- > > > From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> > > > Sent: 10 February 2025 13:15 > > > Subject: Re: [PATCH 02/14] dt-bindings: serial: Document sci > > > bindings for the Renesas RZ/T2H (a.k.a > > > r9a09g077) SoC > > > > > > On Wed, 29 Jan 2025 at 17:52, Thierry Bultel <thierry.bultel.yh@xxxxxxxxxxxxxx> wrote: > > > > Document RZ/T2H (a.k.a r9a09g077) in SCI binding. > > > > > > > > Signed-off-by: Thierry Bultel <thierry.bultel.yh@xxxxxxxxxxxxxx> > > > > > > Thanks for your patch! > > > > > > > --- /dev/null > > > > +++ b/Documentation/devicetree/bindings/serial/renesas,rzsci.yaml > > > > @@ -0,0 +1,100 @@ > > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML > > > > +1.2 > > > > +--- > > > > +$id: http://devicetree.org/schemas/serial/renesas,rzsci.yaml# > > > > > > "rzsci" is IMHO a bad name, as SCI on RZ/T2 differs from the > > > similar-named "SCI" (sometimes called "RSCI" or "SCIg") on RZ/A1H, RZ/A2M, RZ/G2L, RZ/V2L, and > RZ/G3S (and most old SuperH SoCs). > > > > > > BTW, I believe the variant on RZ/T2 is also used on RZ/N2, RZ/V2H, and RZ/G3E? > > > > > > However, binding-wise, they all seem to be very similar. > > > So perhaps you can just add this to the existing > > > Documentation/devicetree/bindings/serial/renesas,sci.yaml? > > > > It is present in RZ/G3E as well. > > RSCI supports sci, scif, i2c and spi that is the reason renesas,rzsci.yaml introduced. > > If you plan to add support for I2C and SPI, you will need different bindings under > Documentation/devicetree/bindings/{i2c,spi}/. OK, I thought since it is a single IP, we need to use a single compatible and instantiate appropriate device based on the device property rather than separate SCI, i2c and spi compatible. Yes, I agree having different device compatible for same IP make life easier, no need to add specific vendor property. Cheers, Biju
