On Fri, Nov 10, 2023 at 8:57 PM Aubin Constans <aubin.constans@xxxxxxxxxxxxx> wrote: > > On 23/09/2023 16:23, Mathieu Moneyron wrote: > > In the device tree, has PIN_PA13__SDMMC0_CD been removed from the > pinctrl for sdmmc0? Yes the pin is not present in the pinctrl. Only PA0 to PA10 configured as SDMMC0 function. > > In case the above behaviour was due to hardware, it would likely point > out a flaw in the Parallel Input/Output Controller (PIO) rather than in > the SDMMC Controller. > > Would you read back the relevant PIO_CFGRx register, with only "PA13" > set in PIO_MSKRx, and provide me with the value read? > Assuming PA13 is Non-Secure; if PA13 is configured as Secure, > S_PIO_CFGRx and S_PIO_MSKRx should be accessed instead. I'm not sure if that's the best way to achieve this but I enabled debug messages in pinctrl-at91-pio4 driver. The messages I got regarding the PA13 pin is the following: 'enable pin 13 as GPIO' With PIO_CFGR0 register for PA13 only is 0x0400. Also from PA0 to PA10 the pins used for the in the mmc pinctrl: 'enable function A group PA0' For all these pins funcion A is SDMMC0. Also as a side note, I will no longer have access to the hardware from the beginning of december as I have resigned from my current job. Best regards, Mathieu
