On 21/12/2022 18:30, Gatien Chevallier wrote:
> The STM32 System Bus is an internal bus on which devices are connected.
> ETZPC is a peripheral overseeing the firewall bus that configures
> and control access to the peripherals connected on it.
>
> For more information on which peripheral is securable, please read
> the STM32MP15 reference manual.
>
> Signed-off-by: Gatien Chevallier <gatien.chevallier@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/stm32mp151.dtsi | 2737 +++++++++++++++--------------
> 1 file changed, 1406 insertions(+), 1331 deletions(-)
>
> - lptimer1: timer@40009000 {
> + etzpc: etzpc@5c007000 {
Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
> + compatible = "st,stm32mp15-sys-bus";
> + reg = <0x5c007000 0x400>;
> #address-cells = <1>;
> - #size-cells = <0>;
> - compatible = "st,stm32-lptimer";
> - reg = <0x40009000 0x400>;
> - interrupts-extended = <&exti 47 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&rcc LPTIM1_K>;
> - clock-names = "mux";
> - wakeup-source;
> - status = "disabled";
Why entire bus is disabled? What resources do you miss?
> + #size-cells = <1>;
> + feature-domain-controller;
> + #feature-domain-cells = <2>;
> + ranges;
>
Best regards,
Krzysztof
