Hi Shawn,
> Subject: Re: [PATCH 2/3] arm64: dts: imx8ulp: add scmi firmware node
>
> On Wed, Nov 17, 2021 at 11:27:39AM +0800, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@xxxxxxx>
> >
> > i.MX8ULP use scmi firmware based power domain and sensor support.
> > So add the firmware node and the sram it uses.
> >
> > Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
> > ---
> > arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 35
> > ++++++++++++++++++++++
> > 1 file changed, 35 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> > b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> > index fb8714379026..d567ef93f8d8 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi
> > @@ -6,6 +6,7 @@
> > #include <dt-bindings/clock/imx8ulp-clock.h>
> > #include <dt-bindings/gpio/gpio.h>
> > #include <dt-bindings/interrupt-controller/arm-gic.h>
> > +#include <dt-bindings/power/imx8ulp-power.h>
> >
> > #include "imx8ulp-pinfunc.h"
> >
> > @@ -102,6 +103,40 @@ sosc: clock-sosc {
> > #clock-cells = <0>;
> > };
> >
> > + sram@2201f000 {
> > + compatible = "mmio-sram";
> > + reg = <0x0 0x2201f000 0x0 0x1000>;
> > +
> > + #address-cells = <1>;
> > + #size-cells = <1>;
> > + ranges = <0 0x0 0x2201f000 0x1000>;
> > +
> > + scmi_buf: scmi_buf@0 {
>
> Hyphen is more recommended than underscore for node name.
Just send out v2 to address this issue.
Or just
> follow the naming in arm,scmi.yaml example?
No need to follow its name there, it support many protocols
and need different shmem for performance and others.
Thanks,
Peng.
>
> Shawn
>
> > + compatible = "arm,scmi-shmem";
> > + reg = <0x0 0x400>;
> > + };
> > + };
> > +
> > + firmware {
> > + scmi {
> > + compatible = "arm,scmi-smc";
> > + arm,smc-id = <0xc20000fe>;
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + shmem = <&scmi_buf>;
> > +
> > + scmi_devpd: protocol@11 {
> > + reg = <0x11>;
> > + #power-domain-cells = <1>;
> > + };
> > +
> > + scmi_sensor: protocol@15 {
> > + reg = <0x15>;
> > + #thermal-sensor-cells = <0>;
> > + };
> > + };
> > + };
> > +
> > soc@0 {
> > compatible = "simple-bus";
> > #address-cells = <1>;
> > --
> > 2.25.1
> >
