Re: [Linux-stm32] [PATCH v3 6/6] ARM: dts: stm32: add ETZPC as a system bus for STM32MP13x boards

[Oleksii Moisieiev <Oleksii_Moisieiev@epam.com>]

Hello,

I'm just wandering what is the status of the Patch Series?

Cc'ed Peng Fang as he also has an interest in the domain-controller 
bindings.

Oleksii.

On 27.02.23 13:26, Gatien CHEVALLIER wrote:
> Hello Ahmad,
>
> Sorry for the delay :)
>
> On 2/13/23 12:27, Ahmad Fatoum wrote:
>> Hello Gatien,
>>
>> On 13.02.23 11:54, Gatien CHEVALLIER wrote:
>>> On 2/9/23 09:10, Ahmad Fatoum wrote:
>>>> On 09.02.23 08:46, Ahmad Fatoum wrote:
>>>>> Hello Gatien,
>>>>>
>>>>> On 27.01.23 17:40, 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 STM32MP13 reference manual.
>>>>>
>>>>> Diff is way too big. Please split up the alphabetic reordering 
>>>>> into its
>>>>> own commit, so actual functional changes are apparent.
>>>>
>>>> Ah, I see now that you are moving securable peripherals into a new 
>>>> bus.
>>>> I share Uwe's confusion of considering the ETZPC as bus.
>>>>
>>>> Does this configuration even change dynamically? Why can't you 
>>>> implement
>>>> this binding in the bootloader and have Linux only see a DT where 
>>>> unavailable
>>>> nodes are status = "disabled"; secure-status = "okay"?
>>>>
>>>> For inspiration, see barebox' device tree fixups when devices are 
>>>> disabled
>>>> per fuse:
>>>>
>>>> https://urldefense.com/v3/__https://elixir.bootlin.com/barebox/v2023.01.0/source/drivers/base/featctrl.c*L122__;Iw!!GF_29dbcQIUBPA!2CT6VXNxfrLUg3mPkiAykgwwu8y8TVPaVa5FupuehHDyeuPvx4a2aNuMs-ayUCqP8q364P8u0GxYprlqwrvgvnXndYBmii57$ 
>>>> [elixir[.]bootlin[.]com]
>>>>
>>>> Cheers,
>>>> Ahmad
>>>
>>> This configuration can change dynamically. The binding will be 
>>> implemented in the bootloader, where the ETZPC is already 
>>> implemented as a bus in our downstream.
>>>
>>> I find the mentionned example valid.
>>>
>>> Now, why is it a bus? :D
>>>
>>> It is the result of the discussion on the previous submission by 
>>> Benjamin (Sorry for the lack of link but I saw that you participated 
>>> on these threads)+ we need the bus mechanism to control whether a 
>>> subnode should be probed or not. You can see it as a firewall bus.
>>>
>>> The ETZPC relies on the ARM TrustZone extension to the AHB bus and 
>>> propagation through bridges to the APB bus. Therefore, I find it 
>>> relevant to consider it as a bus, what is your opinion?
>>>
>>> This patchset is a first step to the implementation of an API to 
>>> control accesses dynamically.
>>
>> I still don't get what's dynamic about this. Either:
>>
>>    - Configuration _can_ change while Linux is running: You'll need 
>> to do
>>      way more than what your current bus provides to somwhow 
>> synchronize state
>>      with the secure monitor; otherwise a newly secured device will 
>> cause the driver
>>      to trigger data aborts that you'll have to handle and unbind the 
>> driver.
>>      (like if a USB drive is yanked out).
>>
>>    - Configuration _can't_ change while Linux is running: You can 
>> have the bootloader
>>      fixup the device tree and Linux need not care at all about 
>> devices that the
>>      ETZPC is securing.
>>
>> My understanding is that the latter is your use case, so I don't see 
>> why we
>> even need the normal world to be aware of the partitioning.
>>
>> Cheers,
>> Ahmad
>>
> What about the case where we do not have a U-Boot/bootloader to fixup 
> the device tree?
>
> On the other hand, ETZPC is a hardware firewall and is on the bus. 
> Therefore, shouldn't it be represented as a bus in the file that 
> describes the hardware?
>
> Best regards,
> Gatien
>
>>>
>>>>
>>>>>
>>>>> Thanks,
>>>>> Ahmad
>>>>>
>>>>>>
>>>>>> Signed-off-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
>>>>>> ---
>>>>>>
>>>>>> No changes in V2.
>>>>>>
>>>>>> Changes in V3:
>>>>>>      -Use appriopriate node name: bus
>>>>>>
>>>>>>    arch/arm/boot/dts/stm32mp131.dtsi  | 407 
>>>>>> +++++++++++++++--------------
>>>>>>    arch/arm/boot/dts/stm32mp133.dtsi  |  51 ++--
>>>>>>    arch/arm/boot/dts/stm32mp13xc.dtsi |  19 +-
>>>>>>    arch/arm/boot/dts/stm32mp13xf.dtsi |  18 +-
>>>>>>    4 files changed, 258 insertions(+), 237 deletions(-)
>>>>>>
>>>>>> diff --git a/arch/arm/boot/dts/stm32mp131.dtsi 
>>>>>> b/arch/arm/boot/dts/stm32mp131.dtsi
>>>>>> index accc3824f7e9..24462a647101 100644
>>>>>> --- a/arch/arm/boot/dts/stm32mp131.dtsi
>>>>>> +++ b/arch/arm/boot/dts/stm32mp131.dtsi
>>>>>> @@ -253,148 +253,6 @@ dmamux1: dma-router@48002000 {
>>>>>>                dma-channels = <16>;
>>>>>>            };
>>>>>>    -        adc_2: adc@48004000 {
>>>>>> -            compatible = "st,stm32mp13-adc-core";
>>>>>> -            reg = <0x48004000 0x400>;
>>>>>> -            interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc ADC2>, <&rcc ADC2_K>;
>>>>>> -            clock-names = "bus", "adc";
>>>>>> -            interrupt-controller;
>>>>>> -            #interrupt-cells = <1>;
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            status = "disabled";
>>>>>> -
>>>>>> -            adc2: adc@0 {
>>>>>> -                compatible = "st,stm32mp13-adc";
>>>>>> -                #io-channel-cells = <1>;
>>>>>> -                #address-cells = <1>;
>>>>>> -                #size-cells = <0>;
>>>>>> -                reg = <0x0>;
>>>>>> -                interrupt-parent = <&adc_2>;
>>>>>> -                interrupts = <0>;
>>>>>> -                dmas = <&dmamux1 10 0x400 0x80000001>;
>>>>>> -                dma-names = "rx";
>>>>>> -                status = "disabled";
>>>>>> -
>>>>>> -                channel@13 {
>>>>>> -                    reg = <13>;
>>>>>> -                    label = "vrefint";
>>>>>> -                };
>>>>>> -                channel@14 {
>>>>>> -                    reg = <14>;
>>>>>> -                    label = "vddcore";
>>>>>> -                };
>>>>>> -                channel@16 {
>>>>>> -                    reg = <16>;
>>>>>> -                    label = "vddcpu";
>>>>>> -                };
>>>>>> -                channel@17 {
>>>>>> -                    reg = <17>;
>>>>>> -                    label = "vddq_ddr";
>>>>>> -                };
>>>>>> -            };
>>>>>> -        };
>>>>>> -
>>>>>> -        usbotg_hs: usb@49000000 {
>>>>>> -            compatible = "st,stm32mp15-hsotg", "snps,dwc2";
>>>>>> -            reg = <0x49000000 0x40000>;
>>>>>> -            clocks = <&rcc USBO_K>;
>>>>>> -            clock-names = "otg";
>>>>>> -            resets = <&rcc USBO_R>;
>>>>>> -            reset-names = "dwc2";
>>>>>> -            interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            g-rx-fifo-size = <512>;
>>>>>> -            g-np-tx-fifo-size = <32>;
>>>>>> -            g-tx-fifo-size = <256 16 16 16 16 16 16 16>;
>>>>>> -            dr_mode = "otg";
>>>>>> -            otg-rev = <0x200>;
>>>>>> -            usb33d-supply = <&usb33>;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>> -        spi4: spi@4c002000 {
>>>>>> -            compatible = "st,stm32h7-spi";
>>>>>> -            reg = <0x4c002000 0x400>;
>>>>>> -            interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc SPI4_K>;
>>>>>> -            resets = <&rcc SPI4_R>;
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            dmas = <&dmamux1 83 0x400 0x01>,
>>>>>> -                   <&dmamux1 84 0x400 0x01>;
>>>>>> -            dma-names = "rx", "tx";
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>> -        spi5: spi@4c003000 {
>>>>>> -            compatible = "st,stm32h7-spi";
>>>>>> -            reg = <0x4c003000 0x400>;
>>>>>> -            interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc SPI5_K>;
>>>>>> -            resets = <&rcc SPI5_R>;
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            dmas = <&dmamux1 85 0x400 0x01>,
>>>>>> -                   <&dmamux1 86 0x400 0x01>;
>>>>>> -            dma-names = "rx", "tx";
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>> -        i2c3: i2c@4c004000 {
>>>>>> -            compatible = "st,stm32mp13-i2c";
>>>>>> -            reg = <0x4c004000 0x400>;
>>>>>> -            interrupt-names = "event", "error";
>>>>>> -            interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
>>>>>> -                     <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc I2C3_K>;
>>>>>> -            resets = <&rcc I2C3_R>;
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            dmas = <&dmamux1 73 0x400 0x1>,
>>>>>> -                   <&dmamux1 74 0x400 0x1>;
>>>>>> -            dma-names = "rx", "tx";
>>>>>> -            st,syscfg-fmp = <&syscfg 0x4 0x4>;
>>>>>> -            i2c-analog-filter;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>> -        i2c4: i2c@4c005000 {
>>>>>> -            compatible = "st,stm32mp13-i2c";
>>>>>> -            reg = <0x4c005000 0x400>;
>>>>>> -            interrupt-names = "event", "error";
>>>>>> -            interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
>>>>>> -                     <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc I2C4_K>;
>>>>>> -            resets = <&rcc I2C4_R>;
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            dmas = <&dmamux1 75 0x400 0x1>,
>>>>>> -                   <&dmamux1 76 0x400 0x1>;
>>>>>> -            dma-names = "rx", "tx";
>>>>>> -            st,syscfg-fmp = <&syscfg 0x4 0x8>;
>>>>>> -            i2c-analog-filter;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>> -        i2c5: i2c@4c006000 {
>>>>>> -            compatible = "st,stm32mp13-i2c";
>>>>>> -            reg = <0x4c006000 0x400>;
>>>>>> -            interrupt-names = "event", "error";
>>>>>> -            interrupts = <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
>>>>>> -                     <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc I2C5_K>;
>>>>>> -            resets = <&rcc I2C5_R>;
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            dmas = <&dmamux1 115 0x400 0x1>,
>>>>>> -                   <&dmamux1 116 0x400 0x1>;
>>>>>> -            dma-names = "rx", "tx";
>>>>>> -            st,syscfg-fmp = <&syscfg 0x4 0x10>;
>>>>>> -            i2c-analog-filter;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>>            rcc: rcc@50000000 {
>>>>>>                compatible = "st,stm32mp13-rcc", "syscon";
>>>>>>                reg = <0x50000000 0x1000>;
>>>>>> @@ -431,34 +289,6 @@ mdma: dma-controller@58000000 {
>>>>>>                dma-requests = <48>;
>>>>>>            };
>>>>>>    -        sdmmc1: mmc@58005000 {
>>>>>> -            compatible = "st,stm32-sdmmc2", "arm,pl18x", 
>>>>>> "arm,primecell";
>>>>>> -            arm,primecell-periphid = <0x20253180>;
>>>>>> -            reg = <0x58005000 0x1000>, <0x58006000 0x1000>;
>>>>>> -            interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc SDMMC1_K>;
>>>>>> -            clock-names = "apb_pclk";
>>>>>> -            resets = <&rcc SDMMC1_R>;
>>>>>> -            cap-sd-highspeed;
>>>>>> -            cap-mmc-highspeed;
>>>>>> -            max-frequency = <130000000>;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>> -        sdmmc2: mmc@58007000 {
>>>>>> -            compatible = "st,stm32-sdmmc2", "arm,pl18x", 
>>>>>> "arm,primecell";
>>>>>> -            arm,primecell-periphid = <0x20253180>;
>>>>>> -            reg = <0x58007000 0x1000>, <0x58008000 0x1000>;
>>>>>> -            interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc SDMMC2_K>;
>>>>>> -            clock-names = "apb_pclk";
>>>>>> -            resets = <&rcc SDMMC2_R>;
>>>>>> -            cap-sd-highspeed;
>>>>>> -            cap-mmc-highspeed;
>>>>>> -            max-frequency = <130000000>;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> -
>>>>>>            usbh_ohci: usb@5800c000 {
>>>>>>                compatible = "generic-ohci";
>>>>>>                reg = <0x5800c000 0x1000>;
>>>>>> @@ -486,29 +316,6 @@ iwdg2: watchdog@5a002000 {
>>>>>>                status = "disabled";
>>>>>>            };
>>>>>>    -        usbphyc: usbphyc@5a006000 {
>>>>>> -            #address-cells = <1>;
>>>>>> -            #size-cells = <0>;
>>>>>> -            #clock-cells = <0>;
>>>>>> -            compatible = "st,stm32mp1-usbphyc";
>>>>>> -            reg = <0x5a006000 0x1000>;
>>>>>> -            clocks = <&rcc USBPHY_K>;
>>>>>> -            resets = <&rcc USBPHY_R>;
>>>>>> -            vdda1v1-supply = <&reg11>;
>>>>>> -            vdda1v8-supply = <&reg18>;
>>>>>> -            status = "disabled";
>>>>>> -
>>>>>> -            usbphyc_port0: usb-phy@0 {
>>>>>> -                #phy-cells = <0>;
>>>>>> -                reg = <0>;
>>>>>> -            };
>>>>>> -
>>>>>> -            usbphyc_port1: usb-phy@1 {
>>>>>> -                #phy-cells = <1>;
>>>>>> -                reg = <1>;
>>>>>> -            };
>>>>>> -        };
>>>>>> -
>>>>>>            rtc: rtc@5c004000 {
>>>>>>                compatible = "st,stm32mp1-rtc";
>>>>>>                reg = <0x5c004000 0x400>;
>>>>>> @@ -536,6 +343,220 @@ ts_cal2: calib@5e {
>>>>>>                };
>>>>>>            };
>>>>>>    +        etzpc: bus@5c007000 {
>>>>>> +            compatible = "st,stm32mp13-sys-bus";
>>>>>> +            reg = <0x5c007000 0x400>;
>>>>>> +            #address-cells = <1>;
>>>>>> +            #size-cells = <1>;
>>>>>> +            feature-domain-controller;
>>>>>> +            #feature-domain-cells = <1>;
>>>>>> +            ranges;
>>>>>> +
>>>>>> +            adc_2: adc@48004000 {
>>>>>> +                compatible = "st,stm32mp13-adc-core";
>>>>>> +                reg = <0x48004000 0x400>;
>>>>>> +                interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc ADC2>, <&rcc ADC2_K>;
>>>>>> +                clock-names = "bus", "adc";
>>>>>> +                interrupt-controller;
>>>>>> +                #interrupt-cells = <1>;
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                feature-domains = <&etzpc 33>;
>>>>>> +                status = "disabled";
>>>>>> +
>>>>>> +                adc2: adc@0 {
>>>>>> +                    compatible = "st,stm32mp13-adc";
>>>>>> +                    #io-channel-cells = <1>;
>>>>>> +                    #address-cells = <1>;
>>>>>> +                    #size-cells = <0>;
>>>>>> +                    reg = <0x0>;
>>>>>> +                    interrupt-parent = <&adc_2>;
>>>>>> +                    interrupts = <0>;
>>>>>> +                    dmas = <&dmamux1 10 0x400 0x80000001>;
>>>>>> +                    dma-names = "rx";
>>>>>> +                    status = "disabled";
>>>>>> +
>>>>>> +                    channel@13 {
>>>>>> +                        reg = <13>;
>>>>>> +                        label = "vrefint";
>>>>>> +                    };
>>>>>> +                    channel@14 {
>>>>>> +                        reg = <14>;
>>>>>> +                        label = "vddcore";
>>>>>> +                    };
>>>>>> +                    channel@16 {
>>>>>> +                        reg = <16>;
>>>>>> +                        label = "vddcpu";
>>>>>> +                    };
>>>>>> +                    channel@17 {
>>>>>> +                        reg = <17>;
>>>>>> +                        label = "vddq_ddr";
>>>>>> +                    };
>>>>>> +                };
>>>>>> +            };
>>>>>> +
>>>>>> +            usbotg_hs: usb@49000000 {
>>>>>> +                compatible = "st,stm32mp15-hsotg", "snps,dwc2";
>>>>>> +                reg = <0x49000000 0x40000>;
>>>>>> +                clocks = <&rcc USBO_K>;
>>>>>> +                clock-names = "otg";
>>>>>> +                resets = <&rcc USBO_R>;
>>>>>> +                reset-names = "dwc2";
>>>>>> +                interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                g-rx-fifo-size = <512>;
>>>>>> +                g-np-tx-fifo-size = <32>;
>>>>>> +                g-tx-fifo-size = <256 16 16 16 16 16 16 16>;
>>>>>> +                dr_mode = "otg";
>>>>>> +                otg-rev = <0x200>;
>>>>>> +                usb33d-supply = <&usb33>;
>>>>>> +                feature-domains = <&etzpc 34>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            spi4: spi@4c002000 {
>>>>>> +                compatible = "st,stm32h7-spi";
>>>>>> +                reg = <0x4c002000 0x400>;
>>>>>> +                interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc SPI4_K>;
>>>>>> +                resets = <&rcc SPI4_R>;
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                dmas = <&dmamux1 83 0x400 0x01>,
>>>>>> +                       <&dmamux1 84 0x400 0x01>;
>>>>>> +                dma-names = "rx", "tx";
>>>>>> +                feature-domains = <&etzpc 18>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            spi5: spi@4c003000 {
>>>>>> +                compatible = "st,stm32h7-spi";
>>>>>> +                reg = <0x4c003000 0x400>;
>>>>>> +                interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc SPI5_K>;
>>>>>> +                resets = <&rcc SPI5_R>;
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                dmas = <&dmamux1 85 0x400 0x01>,
>>>>>> +                       <&dmamux1 86 0x400 0x01>;
>>>>>> +                dma-names = "rx", "tx";
>>>>>> +                feature-domains = <&etzpc 19>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            i2c3: i2c@4c004000 {
>>>>>> +                compatible = "st,stm32mp13-i2c";
>>>>>> +                reg = <0x4c004000 0x400>;
>>>>>> +                interrupt-names = "event", "error";
>>>>>> +                interrupts = <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>,
>>>>>> +                         <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc I2C3_K>;
>>>>>> +                resets = <&rcc I2C3_R>;
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                dmas = <&dmamux1 73 0x400 0x1>,
>>>>>> +                       <&dmamux1 74 0x400 0x1>;
>>>>>> +                dma-names = "rx", "tx";
>>>>>> +                st,syscfg-fmp = <&syscfg 0x4 0x4>;
>>>>>> +                i2c-analog-filter;
>>>>>> +                feature-domains = <&etzpc 20>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            i2c4: i2c@4c005000 {
>>>>>> +                compatible = "st,stm32mp13-i2c";
>>>>>> +                reg = <0x4c005000 0x400>;
>>>>>> +                interrupt-names = "event", "error";
>>>>>> +                interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
>>>>>> +                         <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc I2C4_K>;
>>>>>> +                resets = <&rcc I2C4_R>;
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                dmas = <&dmamux1 75 0x400 0x1>,
>>>>>> +                       <&dmamux1 76 0x400 0x1>;
>>>>>> +                dma-names = "rx", "tx";
>>>>>> +                st,syscfg-fmp = <&syscfg 0x4 0x8>;
>>>>>> +                i2c-analog-filter;
>>>>>> +                feature-domains = <&etzpc 21>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            i2c5: i2c@4c006000 {
>>>>>> +                compatible = "st,stm32mp13-i2c";
>>>>>> +                reg = <0x4c006000 0x400>;
>>>>>> +                interrupt-names = "event", "error";
>>>>>> +                interrupts = <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
>>>>>> +                         <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc I2C5_K>;
>>>>>> +                resets = <&rcc I2C5_R>;
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                dmas = <&dmamux1 115 0x400 0x1>,
>>>>>> +                       <&dmamux1 116 0x400 0x1>;
>>>>>> +                dma-names = "rx", "tx";
>>>>>> +                st,syscfg-fmp = <&syscfg 0x4 0x10>;
>>>>>> +                i2c-analog-filter;
>>>>>> +                feature-domains = <&etzpc 22>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            sdmmc1: mmc@58005000 {
>>>>>> +                compatible = "st,stm32-sdmmc2", "arm,pl18x", 
>>>>>> "arm,primecell";
>>>>>> +                arm,primecell-periphid = <0x20253180>;
>>>>>> +                reg = <0x58005000 0x1000>, <0x58006000 0x1000>;
>>>>>> +                interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc SDMMC1_K>;
>>>>>> +                clock-names = "apb_pclk";
>>>>>> +                resets = <&rcc SDMMC1_R>;
>>>>>> +                cap-sd-highspeed;
>>>>>> +                cap-mmc-highspeed;
>>>>>> +                max-frequency = <130000000>;
>>>>>> +                feature-domains = <&etzpc 50>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            sdmmc2: mmc@58007000 {
>>>>>> +                compatible = "st,stm32-sdmmc2", "arm,pl18x", 
>>>>>> "arm,primecell";
>>>>>> +                arm,primecell-periphid = <0x20253180>;
>>>>>> +                reg = <0x58007000 0x1000>, <0x58008000 0x1000>;
>>>>>> +                interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +                clocks = <&rcc SDMMC2_K>;
>>>>>> +                clock-names = "apb_pclk";
>>>>>> +                resets = <&rcc SDMMC2_R>;
>>>>>> +                cap-sd-highspeed;
>>>>>> +                cap-mmc-highspeed;
>>>>>> +                max-frequency = <130000000>;
>>>>>> +                feature-domains = <&etzpc 51>;
>>>>>> +                status = "disabled";
>>>>>> +            };
>>>>>> +
>>>>>> +            usbphyc: usbphyc@5a006000 {
>>>>>> +                #address-cells = <1>;
>>>>>> +                #size-cells = <0>;
>>>>>> +                #clock-cells = <0>;
>>>>>> +                compatible = "st,stm32mp1-usbphyc";
>>>>>> +                reg = <0x5a006000 0x1000>;
>>>>>> +                clocks = <&rcc USBPHY_K>;
>>>>>> +                resets = <&rcc USBPHY_R>;
>>>>>> +                vdda1v1-supply = <&reg11>;
>>>>>> +                vdda1v8-supply = <&reg18>;
>>>>>> +                feature-domains = <&etzpc 5>;
>>>>>> +                status = "disabled";
>>>>>> +
>>>>>> +                usbphyc_port0: usb-phy@0 {
>>>>>> +                    #phy-cells = <0>;
>>>>>> +                    reg = <0>;
>>>>>> +                };
>>>>>> +
>>>>>> +                usbphyc_port1: usb-phy@1 {
>>>>>> +                    #phy-cells = <1>;
>>>>>> +                    reg = <1>;
>>>>>> +                };
>>>>>> +            };
>>>>>> +
>>>>>> +        };
>>>>>> +
>>>>>>            /*
>>>>>>             * Break node order to solve dependency probe issue 
>>>>>> between
>>>>>>             * pinctrl and exti.
>>>>>> diff --git a/arch/arm/boot/dts/stm32mp133.dtsi 
>>>>>> b/arch/arm/boot/dts/stm32mp133.dtsi
>>>>>> index df451c3c2a26..be6061552683 100644
>>>>>> --- a/arch/arm/boot/dts/stm32mp133.dtsi
>>>>>> +++ b/arch/arm/boot/dts/stm32mp133.dtsi
>>>>>> @@ -33,35 +33,38 @@ m_can2: can@4400f000 {
>>>>>>                bosch,mram-cfg = <0x1400 0 0 32 0 0 2 2>;
>>>>>>                status = "disabled";
>>>>>>            };
>>>>>> +    };
>>>>>> +};
>>>>>>    -        adc_1: adc@48003000 {
>>>>>> -            compatible = "st,stm32mp13-adc-core";
>>>>>> -            reg = <0x48003000 0x400>;
>>>>>> -            interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc ADC1>, <&rcc ADC1_K>;
>>>>>> -            clock-names = "bus", "adc";
>>>>>> -            interrupt-controller;
>>>>>> -            #interrupt-cells = <1>;
>>>>>> +&etzpc {
>>>>>> +    adc_1: adc@48003000 {
>>>>>> +        compatible = "st,stm32mp13-adc-core";
>>>>>> +        reg = <0x48003000 0x400>;
>>>>>> +        interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +        clocks = <&rcc ADC1>, <&rcc ADC1_K>;
>>>>>> +        clock-names = "bus", "adc";
>>>>>> +        interrupt-controller;
>>>>>> +        #interrupt-cells = <1>;
>>>>>> +        #address-cells = <1>;
>>>>>> +        #size-cells = <0>;
>>>>>> +        feature-domains = <&etzpc 32>;
>>>>>> +        status = "disabled";
>>>>>> +
>>>>>> +        adc1: adc@0 {
>>>>>> +            compatible = "st,stm32mp13-adc";
>>>>>> +            #io-channel-cells = <1>;
>>>>>>                #address-cells = <1>;
>>>>>>                #size-cells = <0>;
>>>>>> +            reg = <0x0>;
>>>>>> +            interrupt-parent = <&adc_1>;
>>>>>> +            interrupts = <0>;
>>>>>> +            dmas = <&dmamux1 9 0x400 0x80000001>;
>>>>>> +            dma-names = "rx";
>>>>>>                status = "disabled";
>>>>>>    -            adc1: adc@0 {
>>>>>> -                compatible = "st,stm32mp13-adc";
>>>>>> -                #io-channel-cells = <1>;
>>>>>> -                #address-cells = <1>;
>>>>>> -                #size-cells = <0>;
>>>>>> -                reg = <0x0>;
>>>>>> -                interrupt-parent = <&adc_1>;
>>>>>> -                interrupts = <0>;
>>>>>> -                dmas = <&dmamux1 9 0x400 0x80000001>;
>>>>>> -                dma-names = "rx";
>>>>>> -                status = "disabled";
>>>>>> -
>>>>>> -                channel@18 {
>>>>>> -                    reg = <18>;
>>>>>> -                    label = "vrefint";
>>>>>> -             ��  };
>>>>>> +            channel@18 {
>>>>>> +                reg = <18>;
>>>>>> +                label = "vrefint";
>>>>>>                };
>>>>>>            };
>>>>>>        };
>>>>>> diff --git a/arch/arm/boot/dts/stm32mp13xc.dtsi 
>>>>>> b/arch/arm/boot/dts/stm32mp13xc.dtsi
>>>>>> index 4d00e7592882..a1a7a40c2a3e 100644
>>>>>> --- a/arch/arm/boot/dts/stm32mp13xc.dtsi
>>>>>> +++ b/arch/arm/boot/dts/stm32mp13xc.dtsi
>>>>>> @@ -4,15 +4,14 @@
>>>>>>     * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for 
>>>>>> STMicroelectronics.
>>>>>>     */
>>>>>>    -/ {
>>>>>> -    soc {
>>>>>> -        cryp: crypto@54002000 {
>>>>>> -            compatible = "st,stm32mp1-cryp";
>>>>>> -            reg = <0x54002000 0x400>;
>>>>>> -            interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc CRYP1>;
>>>>>> -            resets = <&rcc CRYP1_R>;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> +&etzpc {
>>>>>> +    cryp: crypto@54002000 {
>>>>>> +        compatible = "st,stm32mp1-cryp";
>>>>>> +        reg = <0x54002000 0x400>;
>>>>>> +        interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +        clocks = <&rcc CRYP1>;
>>>>>> +        resets = <&rcc CRYP1_R>;
>>>>>> +        feature-domains = <&etzpc 42>;
>>>>>> +        status = "disabled";
>>>>>>        };
>>>>>>    };
>>>>>> diff --git a/arch/arm/boot/dts/stm32mp13xf.dtsi 
>>>>>> b/arch/arm/boot/dts/stm32mp13xf.dtsi
>>>>>> index 4d00e7592882..b9fb071a1471 100644
>>>>>> --- a/arch/arm/boot/dts/stm32mp13xf.dtsi
>>>>>> +++ b/arch/arm/boot/dts/stm32mp13xf.dtsi
>>>>>> @@ -4,15 +4,13 @@
>>>>>>     * Author: Alexandre Torgue <alexandre.torgue@foss.st.com> for 
>>>>>> STMicroelectronics.
>>>>>>     */
>>>>>>    -/ {
>>>>>> -    soc {
>>>>>> -        cryp: crypto@54002000 {
>>>>>> -            compatible = "st,stm32mp1-cryp";
>>>>>> -            reg = <0x54002000 0x400>;
>>>>>> -            interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> -            clocks = <&rcc CRYP1>;
>>>>>> -            resets = <&rcc CRYP1_R>;
>>>>>> -            status = "disabled";
>>>>>> -        };
>>>>>> +&etzpc {
>>>>>> +    cryp: crypto@54002000 {
>>>>>> +        compatible = "st,stm32mp1-cryp";
>>>>>> +        reg = <0x54002000 0x400>;
>>>>>> +        interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
>>>>>> +        clocks = <&rcc CRYP1>;
>>>>>> +        resets = <&rcc CRYP1_R>;
>>>>>> +        status = "disabled";
>>>>>>        };
>>>>>>    };
>>>>>
>>>>
>>>
>>> Regarding the patch itself, I can separate it in two patches.
>>> 1)Introduce ETZPC
>>> 2)Move peripherals under ETZPC
>>>
>>> Best regards,
>>> Gatien
>>>
>>