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    SubjectRe: [PATCH v3 0/6] Introduce STM32 system bus
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    Hello all,

    I'm abandoning this series for:
    https://lore.kernel.org/lkml/20230705172759.1610753

    Sorry for the noise.

    Best regards,
    Gatien

    On 1/27/23 17:40, Gatien Chevallier wrote:
    > Document STM32 System Bus. This bus is intended to control firewall
    > access for the peripherals connected to it.
    >
    > For every peripheral, the bus checks the firewall registers to see
    > if the peripheral is configured as non-secure. If the peripheral
    > is configured as secure, the node is marked populated, so the
    > device won't be probed.
    >
    > This is useful as a firewall configuration sanity check and avoid
    > platform crashes in case peripherals are incorrectly configured.
    >
    > The STM32 System Bus implements the feature-domain-controller
    > bindings. It is used by peripherals to reference a domain
    > controller, in this case the firewall feature domain.
    > The bus uses the ID referenced by the feature-domains property to
    > know where to look in the firewall to get the security configuration
    > for the peripheral. This allows a device tree description rather
    > than a hardcoded peripheral table in the bus driver.
    >
    > On STM32MP13/15 platforms, the firewall bus is represented by the
    > ETZPC node, which is responsible for the securing / MCU isolating
    > the capable peripherals.
    >
    > STM32MP13/15 device trees are updated in this series to implement
    > the bus. All peripherals that are securable or MCU isolation capable
    > by the ETZPC are connected to the bus.
    >
    > Changes in V2:
    > - Corrected YAMLS errors highlighted by Rob's robot
    > - Re-ordered Signed-off-by tags in two patches
    >
    > Changes in V3:
    > - Document feature-domains property in YAML documentation for
    > concerned periperals under the System Bus
    > - Fix STM32 System Bus YAML documentation
    > - Remove STM32 System bus bindings that were currently used
    > as helpers for device tree
    > - Correct few errors in driver
    > - Add missing peripherals under the System Bus that were in
    > SoC variation device tree files
    > - Fix node names
    >
    > Gatien Chevallier (5):
    > dt-bindings: treewide: add feature-domains description in binding
    > files
    > dt-bindings: bus: add STM32 System Bus
    > bus: stm32_sys_bus: add support for STM32MP15 and STM32MP13 system bus
    > ARM: dts: stm32: add ETZPC as a system bus for STM32MP15x boards
    > ARM: dts: stm32: add ETZPC as a system bus for STM32MP13x boards
    >
    > Oleksii Moisieiev (1):
    > dt-bindings: Document common device controller bindings
    >
    > .../devicetree/bindings/bus/st,sys-bus.yaml | 127 +
    > .../bindings/crypto/st,stm32-hash.yaml | 5 +
    > .../devicetree/bindings/dma/st,stm32-dma.yaml | 5 +
    > .../bindings/dma/st,stm32-dmamux.yaml | 5 +
    > .../feature-domain-controller.yaml | 84 +
    > .../devicetree/bindings/i2c/st,stm32-i2c.yaml | 5 +
    > .../bindings/iio/adc/st,stm32-adc.yaml | 5 +
    > .../bindings/iio/adc/st,stm32-dfsdm-adc.yaml | 5 +
    > .../bindings/iio/dac/st,stm32-dac.yaml | 5 +
    > .../bindings/media/st,stm32-cec.yaml | 5 +
    > .../bindings/media/st,stm32-dcmi.yaml | 5 +
    > .../memory-controllers/st,stm32-fmc2-ebi.yaml | 5 +
    > .../bindings/mfd/st,stm32-lptimer.yaml | 5 +
    > .../bindings/mfd/st,stm32-timers.yaml | 6 +
    > .../devicetree/bindings/mmc/arm,pl18x.yaml | 5 +
    > .../devicetree/bindings/net/stm32-dwmac.yaml | 5 +
    > .../bindings/phy/phy-stm32-usbphyc.yaml | 5 +
    > .../bindings/regulator/st,stm32-vrefbuf.yaml | 5 +
    > .../devicetree/bindings/rng/st,stm32-rng.yaml | 5 +
    > .../bindings/serial/st,stm32-uart.yaml | 5 +
    > .../bindings/sound/st,stm32-i2s.yaml | 5 +
    > .../bindings/sound/st,stm32-sai.yaml | 5 +
    > .../bindings/sound/st,stm32-spdifrx.yaml | 5 +
    > .../bindings/spi/st,stm32-qspi.yaml | 5 +
    > .../devicetree/bindings/spi/st,stm32-spi.yaml | 5 +
    > .../devicetree/bindings/usb/dwc2.yaml | 5 +
    > MAINTAINERS | 6 +
    > 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 +-
    > arch/arm/boot/dts/stm32mp151.dtsi | 2722 +++++++++--------
    > arch/arm/boot/dts/stm32mp153.dtsi | 52 +-
    > arch/arm/boot/dts/stm32mp15xc.dtsi | 19 +-
    > drivers/bus/Kconfig | 9 +
    > drivers/bus/Makefile | 1 +
    > drivers/bus/stm32_sys_bus.c | 168 +
    > 37 files changed, 2208 insertions(+), 1596 deletions(-)
    > create mode 100644 Documentation/devicetree/bindings/bus/st,sys-bus.yaml
    > create mode 100644 Documentation/devicetree/bindings/feature-controllers/feature-domain-controller.yaml
    > create mode 100644 drivers/bus/stm32_sys_bus.c
    >

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