Re: [PATCH 4/4] riscv: dts: sophgo: Enable SPI NOR node for SG2042_EVB_V2

[Zixian Zeng <sycamoremoon376@gmail.com>]

On Fri, Aug 15, 2025 at 11:56:22AM +0800, Chen Wang wrote:
> 
> On 8/13/2025 4:33 PM, Zixian Zeng wrote:
> > Enable SPI NOR node for SG2042_EVB_V2 device tree
> >
> > Signed-off-by: Han Gao <rabenda.cn@gmail.com>
> > Signed-off-by: Zixian Zeng <sycamoremoon376@gmail.com>
> > ---
> >   arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts | 12 ++++++++++++
> >   1 file changed, 12 insertions(+)
> >
> > diff --git a/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts b/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
> > index 46980e41b886ce17dacce791fa5f2cef14cfa214..7001d8ffdc3e04c5a5cd5da85a4fb1c0351eb9a5 100644
> > --- a/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
> > +++ b/arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts
> > @@ -226,6 +226,18 @@ &sd {
> >   	status = "okay";
> >   };
> >   
> > +&spifmc1 {
> > +	status = "okay";
> > +
> > +	flash@0 {
> > +		compatible = "jedec,spi-nor";
> > +		reg = <0>;
> > +		spi-max-frequency = <100000000>;
> > +		spi-tx-bus-width = <4>;
> > +		spi-rx-bus-width = <4>;
> > +	};
> > +};
> > +
> 
> Only spifmc1 on EVB_V2? What about spifmc0?
> 
Yes, EVB_V2 has only one spifmc1.
I have checked schematics which can be opened by OrCAD:
https://github.com/sophgo/sophgo-hardware/blob/master/SG2042/SG2042-x4-EVB/sch/SG2042_EVB_V2_20230302A_BOM.DSN
https://github.com/sophgo/sophgo-hardware/blob/master/SG2042/SG2042-x8-EVB/SG2042_EVB_V11_20220902_BOM.DSN

For your convenience, I have exported them to PDF:
https://github.com/sycamoremoon/linux-riscv/tree/schematic
> Otherwise:
> 
> Reviewed-by: Chen Wang <unicorn_wang@outlook.com>

Thanks for your reviewing.

Best Regards,
Zixian