Closed jamwu closed 4 years ago
finally, i fix this problem by myself,and got it work on cm3+ and pi3 (only 1-bit mode).hope this comment will help others who has the same problem.
because what i used is nodemcu-8266,it pulldown gpio15 to gnd.after i connect gpio15 direct to 3.3v,it can work on 1-bit sdio mode.
but when i try the 4-bit mode by this setting:
dtoverlay=sdio,poll_once=off
after reboot,it still show me on 1-bit mode:
pi@raspberrypi:~ $ sudo cat /sys/kernel/debug/mmc1/ios
clock: 50000000 Hz
actual clock: 41666667 Hz
vdd: 21 (3.3 ~ 3.4 V)
bus mode: 2 (push-pull)
chip select: 0 (don't care)
power mode: 2 (on)
bus width: 0 (1 bits)
timing spec: 2 (sd high-speed)
signal voltage: 0 (3.30 V)
driver type: 0 (driver type B)
has anyone encountered the same problem?
I have pi3 and pi b+, but when I used the last release with rraspbian(kernel 4.19.66+) ,
sudo modprobe esp8089
give this error:any idea about this?