[PATCH] imx93_frdm: Add OP-TEE device tree node

[Tom Rini]

On Mon, Jul 06, 2026 at 04:54:17PM +0200, Mathieu Dubois-Briand wrote:
> Hi,
> 
> On Mon Jul 6, 2026 at 4:14 PM CEST, Peter Robinson wrote:
> > On Mon, 6 Jul 2026 at 13:34, Mathieu Dubois-Briand
> > <mathieu.dubois-briand at bootlin.com> wrote:
> >>
> >> Add missing firmware/optee node, so is can be both used and copied into
> >> Linux device tree by optee_copy_firmware_node(). This is consistent with
> >> other i.MX93 boards.
> >
> > Shouldn't this be going to the upstream Linux DT at which point get it
> > when we resync?
> 
> I don't think it should. Or maybe it should, but then we are doing wrong
> things for other boards, particularly for the i.MX family.
> 
> We have this node in the -u-boot.dtsi file for various other boards:
> 
> git grep "linaro,optee-tz" -- '*-u-boot.dtsi'
> arch/arm/dts/imx8mm-u-boot.dtsi:                        compatible = "linaro,optee-tz";
> arch/arm/dts/imx8mn-u-boot.dtsi:                        compatible = "linaro,optee-tz";
> arch/arm/dts/imx8mp-debix-model-a-u-boot.dtsi:                  compatible = "linaro,optee-tz";
> arch/arm/dts/imx8mp-navqp-u-boot.dtsi:                  compatible = "linaro,optee-tz";
> arch/arm/dts/imx8mp-u-boot.dtsi:                        compatible = "linaro,optee-tz";
> arch/arm/dts/imx91-11x11-evk-u-boot.dtsi:                       compatible = "linaro,optee-tz";
> arch/arm/dts/imx91-11x11-frdm-u-boot.dtsi:                      compatible = "linaro,optee-tz";
> arch/arm/dts/imx91-93-phyboard-segin-common-u-boot.dtsi:                        compatible = "linaro,optee-tz";
> arch/arm/dts/imx93-11x11-evk-u-boot.dtsi:                       compatible = "linaro,optee-tz";
> arch/arm/dts/imx93-11x11-frdm-u-boot.dtsi:                      compatible = "linaro,optee-tz";
> arch/arm/dts/imx93-9x9-qsb-u-boot.dtsi:                 compatible = "linaro,optee-tz";
> arch/arm/dts/imx93-kontron-bl-osm-s-u-boot.dtsi:                        compatible = "linaro,optee-tz";
> arch/arm/dts/imx93-var-som-symphony-u-boot.dtsi:                        compatible = "linaro,optee-tz";
> arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi:                       compatible = "linaro,optee-tz";
> arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi:                       compatible = "linaro,optee-tz";

Since I assume this would still pass validation in the Linux kernel,
yes, it looks like a lot of platforms are doing it wrong here and should
be pushing this upstream. Thanks.

-- 
Tom
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