GitHub - D-TACQ/AD485X: D-TACQ Hack/Port of ADI spi driver .. we want the SPI, we need to cut the AXI, we have our own..

D-TACQ / AD485X Public

Notifications You must be signed in to change notification settings
Fork 0
Star 0

D-TACQ Hack/Port of ADI spi driver .. we want the SPI, we need to cut the AXI, we have our own..

Notifications

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
local		local
Makefile		Makefile
README		README
ad485x.c		ad485x.c
cf_axi_adc.h		cf_axi_adc.h

Repository files navigation

[  119.610322] acq420 40000000.acq2006sc: acq400_set_peripheral_SPI_CS() 00000007
[  119.617881] acq420 40000000.acq2006sc: acq400_set_peripheral_SPI_CS() 00000001
[  119.626185] (NULL device *): ad485x_probe adc: ec6212c0
[  138.725877] (NULL device *): ad485x_spi_reg_read adc   (null)
[  138.731278] Unable to handle kernel NULL pointer dereference at virtual address 0000000c
[  138.745296] pgd = ec15c000
[  138.748037] [0000000c] *pgd=00000000
[  138.751705] Internal error: Oops - BUG: 5 [#1] PREEMPT SMP ARM

cq1001_074> ./debugs 
acq1001_074> /usr/local/CARE/load.overlay acq400_ad4858_overlay_cs1
loading overlay acq400_ad4858_overlay_cs1.dtb acq400_ad4858_overlay_cs1 ...
acq1001_074> /sbin/insmod ad485xx.ko dyndbg=+p
acq1001_074> echo 0xA > /sys/kernel/debug/iio/iio\:device1/direct_reg_access
acq1001_074> cat /sys/kernel/debug/iio/iio\:device1/direct_reg_access
Segmentation fault



Zero. Zero WTF?


OK, conv it is, it's a winner


acq1001_074> ./goforit 
loading overlay acq400_ad4858_overlay_cs1.dtb acq400_ad4858_overlay_cs1 ...
0xB6 0x1
0xB7 0x2
0xB8 0x4
0xB9 0x8
0x3 0x7
0x4 0x60
0x5 0x0
0x6 0x0
0xA 0x0
0xB 0x83
0xC 0x56
0xD 0x4
0xac 0x0
0xB6 0x1
0xB7 0x2
0xB8 0x4
0xB9 0x8