Re: [Linux-stm32] [PATCH v2 12/13] ARM: dts: stm32: enable optee firmware and SCMI support on STM32MP13

[Gabriel FERNANDEZ]

On 2/25/22 16:13, Ahmad Fatoum wrote:
> Hello Gabriel,
>
> On 25.02.22 14:31, gabriel.fernandez@xxxxxxxxxxx wrote:
> > From: Gabriel Fernandez <gabriel.fernandez@xxxxxxxxxxx>
> >
> > Enable optee and SCMI clocks support.
> >
> > Signed-off-by: Gabriel Fernandez <gabriel.fernandez@xxxxxxxxxxx>
> > ---
> >   arch/arm/boot/dts/stm32mp131.dtsi | 37 +++++++++++++++++++++++++++++++
> >   1 file changed, 37 insertions(+)
> >
> > diff --git a/arch/arm/boot/dts/stm32mp131.dtsi b/arch/arm/boot/dts/stm32mp131.dtsi
> > index 262de4eeb4ed..78eac53224d4 100644
> > --- a/arch/arm/boot/dts/stm32mp131.dtsi
> > +++ b/arch/arm/boot/dts/stm32mp131.dtsi
> > @@ -27,6 +27,43 @@ arm-pmu {
> >   		interrupt-parent = <&intc>;
> >   	};
> >   
> > +	scmi_sram: sram@2ffff000 {
> > +		compatible = "mmio-sram";
> > +		reg = <0x2ffff000 0x1000>;
> > +		#address-cells = <1>;
> > +		#size-cells = <1>;
> > +		ranges = <0 0x2ffff000 0x1000>;
> > +
> > +		scmi_shm: scmi_shm@0 {
> > +			compatible = "arm,scmi-shmem";
> > +			reg = <0 0x80>;
> > +		};
> > +	};
> > +
> > +	firmware {
> > +		optee {
> > +			method = "smc";
> > +			compatible = "linaro,optee-tz";
> > +		};
> > +
> > +		scmi: scmi {
> > +			compatible = "linaro,scmi-optee";
> This compatible doesn't seem to be documented upstream. I am looking at v5.17-rc5.
> Do you have a reference detailing the difference between this conduit and
> plain arm,scmi-smc (as used with TF-A on the STM32MP151).
>
> Cheers,
> Ahmad

Hi

Ahmad,

it's on going.

https://lore.kernel.org/linux-arm-kernel/20211029102118.GG6526@e120937-lin/T/#mf46c83f0aadce3061ee93fa22159405f38d881a0

> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +			linaro,optee-channel-id = <0>;
> > +			shmem = <&scmi_shm>;
> > +
> > +			scmi_clk: protocol@14 {
> > +				reg = <0x14>;
> > +				#clock-cells = <1>;
> > +			};
> > +
> > +			scmi_reset: protocol@16 {
> > +				reg = <0x16>;
> > +				#reset-cells = <1>;
> > +			};
> > +		};
> > +	};
> >   	clocks {
> >   		clk_axi: clk-axi {
> >   			#clock-cells = <0>;