On 05/09/2022 17:22, Sergiu.Moga@xxxxxxxxxxxxx wrote: > On 05.09.2022 17:37, Lee Jones wrote: >> >> On Fri, 19 Aug 2022, Sergiu.Moga@xxxxxxxxxxxxx wrote: >> >>> On 18.08.2022 11:39, Krzysztof Kozlowski wrote: >>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe >>>> >>>> On 17/08/2022 10:55, Sergiu Moga wrote: >>>>> Convert at91 USART DT Binding for Atmel/Microchip SoCs to >>>>> json-schema format. >>>>> >>>>> Signed-off-by: Sergiu Moga <sergiu.moga@xxxxxxxxxxxxx> >>>>> --- >>>>> .../bindings/mfd/atmel,at91-usart.yaml | 190 ++++++++++++++++++ >>>>> .../devicetree/bindings/mfd/atmel-usart.txt | 98 --------- >>>>> 2 files changed, 190 insertions(+), 98 deletions(-) >>>>> create mode 100644 Documentation/devicetree/bindings/mfd/atmel,at91-usart.yaml >>>>> delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-usart.txt >>>>> >>>>> diff --git a/Documentation/devicetree/bindings/mfd/atmel,at91-usart.yaml b/Documentation/devicetree/bindings/mfd/atmel,at91-usart.yaml >>>>> new file mode 100644 >>>>> index 000000000000..cf15d73fa1e8 >>>>> --- /dev/null >>>>> +++ b/Documentation/devicetree/bindings/mfd/atmel,at91-usart.yaml >>>> One more thing - I think this should be in serial directory, not mfd, >>>> even though it includes SPI. MFD is just a Linux naming/wrapper device. >>>> >>>> Best regards, >>>> Krzysztof >>> >>> I would rather keep it in this directory, since its corresponding driver >>> is also in the mfd directory. >> >> Looks like a UART driver to me. >> >> Which MFD driver does this pertain to? >> >> -- >> Lee Jones [李琼斯] > > Hi, > > It's this one: drivers/mfd/at91-usart.c[1] > > > [1] > https://elixir.bootlin.com/linux/v6.0-rc4/source/drivers/mfd/at91-usart.c Which is not a "real MFD driver" because it probes exactly one child (depending on the chosen serial protocol). Aren't MFD supposed to have more then one child? Best regards, Krzysztof