On 5/29/26 17:31, Dario Binacchi wrote:
> The STM32MP157F-DK2 board is a direct derivative of the STM32MP157C-DK2.
> As explained by ST [1], the "STM32MP157F-DK2 is assembled with latest
> STM32MP15 RevZ cut which is the only one available for new product now.
> The major differences in this 'F' variant SoC are the increased max
> frequency of the Cortex-A7 cores and the correction of some HW bugs
> (Device Rev.Z, see errata ES0438)".
>
> On the software/architecture side, this variant utilizes SCMI (System
> Control and Management Interface) for secure world resource management.
> As a consequence, the underlying stm32mp15-scmi.dtsi explicitly deletes
> several fixed clock nodes (such as clk_hse, clk_hsi, clk_lse, clk_lsi,
> and clk_csi), making it impossible to include stm32mp157c-dk2-u-boot.dtsi
> without triggering compilation errors due to these missing clock labels.
>
> So let's introduce a dedicated stm32mp157f-dk2-u-boot.dtsi that directly
> defines the fwu-mdata node. This provides the necessary FWU metadata
> configuration required to allow automatic A/B bank selection, supported
> for STM32MP15 boards by commit 560d8f32703f ("board: st: stm32mp15:
> support dynamic A/B bank bootup").
>
> [1]
> https://community.st.com/t5/stm32-mpus-products-and-hardware/i-m-wondering-what-s-the-difference-point-between-stm32mp157c/td-p/213460
> Signed-off-by: Dario Binacchi <[email protected]>
>
> ---
>
> Changes in v2:
> - Drop the inclusion of stm32mp157c-dk2-u-boot.dtsi to avoid compilation
> errors caused by deleted clock nodes in stm32mp15-scmi.dtsi.
> - Directly define the fwu-mdata node in stm32mp157f-dk2-u-boot.dtsi to
> properly support automatic A/B bank selection.
>
> arch/arm/dts/stm32mp157f-dk2-u-boot.dtsi | 11 +++++++++++
> 1 file changed, 11 insertions(+)
> create mode 100644 arch/arm/dts/stm32mp157f-dk2-u-boot.dtsi
>
> diff --git a/arch/arm/dts/stm32mp157f-dk2-u-boot.dtsi
> b/arch/arm/dts/stm32mp157f-dk2-u-boot.dtsi
> new file mode 100644
> index 000000000000..77805417bfa9
> --- /dev/null
> +++ b/arch/arm/dts/stm32mp157f-dk2-u-boot.dtsi
> @@ -0,0 +1,11 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (C) 2026 Amarula Solutions, Dario Binacchi
> <[email protected]>
> + */
> +
> +/ {
> + fwu-mdata {
> + compatible = "u-boot,fwu-mdata-gpt";
> + fwu-mdata-store = <&sdmmc1>;
> + };
> +};
Reviewed-by: Patrice Chotard <[email protected]>
Thanks
Patrice
