On 23/10/2024 10:56, Antonio Borneo wrote: > On Wed, 2024-10-23 at 10:47 +0200, Krzysztof Kozlowski wrote: >> On Tue, Oct 22, 2024 at 05:56:48PM +0200, Antonio Borneo wrote: >>> From: Fabien Dessenne <fabien.dessenne@xxxxxxxxxxx> >>> >>> Document the RSVD (Reserved) mux function, used to reserve pins >>> for a coprocessor not running Linux. >>> >>> Signed-off-by: Fabien Dessenne <fabien.dessenne@xxxxxxxxxxx> >>> Signed-off-by: Antonio Borneo <antonio.borneo@xxxxxxxxxxx> >>> --- >>> .../devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml | 8 ++++++++ >>> include/dt-bindings/pinctrl/stm32-pinfunc.h | 1 + >>> 2 files changed, 9 insertions(+) >>> >> >> BTW, which *existing* SoCs use it? Aren't you adding it for the new >> platform? >> > > This is already used in ST downstream kernel for STM32MP15x > In this example > https://github.com/STMicroelectronics/linux/blob/v6.1-stm32mp/arch/arm/boot/dts/stm32mp157f-dk2-m4-examples.dts#L112 > > the GPIOs for LED and for PWM are assigned to the Cortex-M4 and Linux (on Cortex-A7) is not supposed to touch them. I wasn't clear. Which upstream uses it? We really could not care less about downstream vendor code. Best regards, Krzysztof
