Dear I2C folks,
I am trying to read the CPDL firmware version of the switch Edgecore
AS5114-48X with dentOS (Debian based).
In U-Boot it supposedly work like below:
Marvell>> i2c dev 2
Marvell>> i2c md 0x40 01 1
0001: 01
Marvell>> i2c md 0x40 ff 1
00ff: 03
But I like to do it with GNU/Linux, but my attempts failed:
```
# i2cdetect -y 2
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: UU UU -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- 6a -- -- -- -- --
70: -- UU UU UU UU UU UU --
```
Nothing seems to be at address 0x40:
```
# i2cdump -f -y 2 0x40
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
10: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
20: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
30: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
40: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
50: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
60: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
70: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
80: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
90: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
a0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
b0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
c0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
d0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
e0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
f0: XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XXXXXXXXXXXXXXXX
```
Could the bus be different?
```
# i2cdetect -l
i2c-3 i2c i2c-2-mux (chan_id 0) I2C adapter
i2c-30 i2c i2c-2-mux (chan_id 3) I2C adapter
i2c-20 i2c i2c-2-mux (chan_id 1) I2C adapter
i2c-49 i2c i2c-2-mux (chan_id 6) I2C adapter
i2c-10 i2c i2c-2-mux (chan_id 7) I2C adapter
i2c-39 i2c i2c-2-mux (chan_id 4) I2C adapter
i2c-1 i2c mv64xxx_i2c adapter I2C adapter
i2c-29 i2c i2c-2-mux (chan_id 2) I2C adapter
i2c-19 i2c i2c-2-mux (chan_id 0) I2C adapter
i2c-47 i2c i2c-2-mux (chan_id 4) I2C adapter
i2c-37 i2c i2c-2-mux (chan_id 2) I2C adapter
i2c-27 i2c i2c-2-mux (chan_id 0) I2C adapter
i2c-17 i2c i2c-2-mux (chan_id 6) I2C adapter
i2c-45 i2c i2c-2-mux (chan_id 2) I2C adapter
i2c-8 i2c i2c-2-mux (chan_id 5) I2C adapter
i2c-35 i2c i2c-2-mux (chan_id 0) I2C adapter
i2c-25 i2c i2c-2-mux (chan_id 6) I2C adapter
i2c-15 i2c i2c-2-mux (chan_id 4) I2C adapter
i2c-43 i2c i2c-2-mux (chan_id 0) I2C adapter
i2c-6 i2c i2c-2-mux (chan_id 3) I2C adapter
i2c-33 i2c i2c-2-mux (chan_id 6) I2C adapter
i2c-23 i2c i2c-2-mux (chan_id 4) I2C adapter
i2c-13 i2c i2c-2-mux (chan_id 2) I2C adapter
i2c-41 i2c i2c-2-mux (chan_id 6) I2C adapter
i2c-4 i2c i2c-2-mux (chan_id 1) I2C adapter
i2c-31 i2c i2c-2-mux (chan_id 4) I2C adapter
i2c-21 i2c i2c-2-mux (chan_id 2) I2C adapter
i2c-11 i2c i2c-2-mux (chan_id 0) I2C adapter
i2c-2 i2c mv64xxx_i2c adapter I2C adapter
i2c-48 i2c i2c-2-mux (chan_id 5) I2C adapter
i2c-38 i2c i2c-2-mux (chan_id 3) I2C adapter
i2c-0 i2c mv64xxx_i2c adapter I2C adapter
i2c-28 i2c i2c-2-mux (chan_id 1) I2C adapter
i2c-18 i2c i2c-2-mux (chan_id 7) I2C adapter
i2c-46 i2c i2c-2-mux (chan_id 3) I2C adapter
i2c-9 i2c i2c-2-mux (chan_id 6) I2C adapter
i2c-36 i2c i2c-2-mux (chan_id 1) I2C adapter
i2c-26 i2c i2c-2-mux (chan_id 7) I2C adapter
i2c-16 i2c i2c-2-mux (chan_id 5) I2C adapter
i2c-44 i2c i2c-2-mux (chan_id 1) I2C adapter
i2c-7 i2c i2c-2-mux (chan_id 4) I2C adapter
i2c-34 i2c i2c-2-mux (chan_id 7) I2C adapter
i2c-24 i2c i2c-2-mux (chan_id 5) I2C adapter
i2c-14 i2c i2c-2-mux (chan_id 3) I2C adapter
i2c-42 i2c i2c-2-mux (chan_id 7) I2C adapter
i2c-5 i2c i2c-2-mux (chan_id 2) I2C adapter
i2c-32 i2c i2c-2-mux (chan_id 5) I2C adapter
i2c-22 i2c i2c-2-mux (chan_id 3) I2C adapter
i2c-50 i2c i2c-2-mux (chan_id 7) I2C adapter
i2c-12 i2c i2c-2-mux (chan_id 1) I2C adapter
i2c-40 i2c i2c-2-mux (chan_id 5) I2C adapter
# find / -iname *cpld*
/sys/bus/i2c/drivers/as4224_cpld
/sys/module/arm64_accton_as4224_cpld
/sys/module/arm64_accton_as4224_cpld/drivers/i2c:as4224_cpld
/lib/modules/5.6.16/onl/wnc/arm64-wnc-qsa72-aom-a-48p/qsa72-aom-a-48p-sys_cpld.ko
/lib/modules/5.6.16/onl/wnc/arm64-wnc-qsd61-aom-a-48/qsd61-aom-a-48-sfp_plus_cpld.ko
/lib/modules/5.6.16/onl/wnc/arm64-wnc-qsd61-aom-a-48/qsd61-aom-a-48-sys_cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn48m2/arm64-delta-tn48m-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn48m-poe/arm64-delta-tn48m-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn4810m-dn/arm64-delta-tn48m-dn-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn48m-poe-dn/arm64-delta-tn48m-dn-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn4810m/arm64-delta-tn48m-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn48m-dn/arm64-delta-tn48m-dn-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tn48m/arm64-delta-tn48m-cpld.ko
/lib/modules/5.10.4/onl/delta/arm64-delta-tx4810/arm64-delta-tx4810-cpld.ko
/lib/modules/5.10.4/onl/accton/arm64-accton-as4224-52p/arm64-accton-as4224-cpld.ko
/lib/modules/5.10.4/onl/accton/arm64-accton-as4224-52t/arm64-accton-as4224-cpld.ko
/lib/modules/5.10.4/onl/accton/arm64-accton-as5114-48x/arm64-accton-as4224-cpld.ko
# ls -l /sys/bus/i2c/drivers/as4224_cpld/
total 0
lrwxrwxrwx 1 root root 0 Jun 20 16:53 0-0040 ->
../../../../devices/platform/ap806/ap806:config-space@f0000000/f0511000.i2c/i2c-0/0-0040
--w------- 1 root root 4096 Jun 20 16:53 bind
lrwxrwxrwx 1 root root 0 Jun 20 16:53 module ->
../../../../module/arm64_accton_as4224_cpld
--w------- 1 root root 4096 May 16 10:21 uevent
--w------- 1 root root 4096 Jun 20 16:53 unbind
```
Is it bus 0?
```
# i2cdump -f -y 0 0x40
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 80 01 ff 07 0f cc cc cc cc cc cc cc cc cc cc cc ??.?????????????
10: ff 03 3f cc 01 cc cc cc cc cc cc cc cc cc cc cc .???????????????
20: ff cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc .???????????????
30: ff ff ff ff cc cc cc cc cc cc cc cc cc cc cc cc ....????????????
40: cc cc cc 0e cc cc cc cc cc cc cc cc cc cc cc cc ????????????????
50: 0d 4a 03 00 7f cc cc cc cc cc cc cc cc cc cc cc ?J?.????????????
60: 01 71 1e cc cc cc cc cc cc cc cc cc cc cc cc cc ?q??????????????
70: 7f 7f 7f 7f 7f cc cc cc cc cc cc cc cc cc cc cc ????????????????
80: 6c 69 69 69 68 cc cc cc cc cc cc cc cc cc cc cc liiih???????????
90: 02 00 71 71 cc cc cc cc cc cc cc cc cc cc cc cc ?.qq????????????
a0: ff ff ff ff ff ff ff ff ff ff ff 7f cc cc cc cc ...........?????
b0: ff ff ff ff ff ff 00 00 00 00 00 00 cc cc cc cc ............????
c0: 0f fe ff ff ff 3f 00 00 00 00 00 00 cc cc cc cc ??...?......????
d0: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc ????????????????
e0: 00 71 cc cc cc cc cc cc cc cc cc cc cc cc cc cc .q??????????????
f0: 41 53 35 31 31 34 00 00 00 00 00 00 41 57 53 05 AS5114......AWS?
```
What would be the values of `0x40 01 1` and ` 0x40 ff 1`?
Kind regards,
Paul
