On Mon, Nov 16, 2020 at 11:43 PM chuck kamas via lists.yoctoproject.org <[email protected]> wrote: > > Hi all, > > > I have been spinning my wheels for two days trying to discover how to > enable MMC1 on a CM3. This is the one on GPIO22-27. I can boot Rasbian > on the CM3 and it inits the MMC1 and its pins just fine. I can > read/write to my SD card from it etc. However, when I build yocto it > leaves the GPIOS22-27 in gpio mode and does not set them to MMC1 mode. > I have tried changing the device tree as described here: > > https://stackoverflow.com/questions/44702426/how-to-setup-an-own-device-tree-for-a-raspberrypi-in-yocto > > That compiles and add the .dtbo to my build, but still the GPIOS are not > set to MMC1 mode. > > > cat /sys/kernel/debug/pinctrl/*gpio*/pinmux-pins > > Pinmux settings per pin > > Format: pin (name): mux_owner gpio_owner hog? > > .... > > > > pin 22 (gpio22): (MUX UNCLAIMED) (GPIO UNCLAIMED) > > pin 23 (gpio23): (MUX UNCLAIMED) (GPIO UNCLAIMED) > > pin 24 (gpio24): (MUX UNCLAIMED) (GPIO UNCLAIMED) > > pin 25 (gpio25): (MUX UNCLAIMED) (GPIO UNCLAIMED) > > pin 26 (gpio26): (MUX UNCLAIMED) (GPIO UNCLAIMED) > > pin 27 (gpio27): (MUX UNCLAIMED) (GPIO UNCLAIMED) > > > > ..... > > > I have looked at: > > https://ralimtek.com/raspberry%20pi/electronics/software/raspberry_pi_secondary_sd_card/ > > > Any ideas of where to look next to turn on the sdio would be appreciated! > >
what does /boot/config.txt look like on raspbian and yocto built images > Chuck > > > > >
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#51405): https://lists.yoctoproject.org/g/yocto/message/51405 Mute This Topic: https://lists.yoctoproject.org/mt/78311893/21656 Group Owner: [email protected] Unsubscribe: https://lists.yoctoproject.org/g/yocto/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
