Add Delta Q54SN120A1 and Q54SW120A7 support

[antonio-nexthop]

Add Delta Q54SN120A1 and Q54SW120A7 1/4-brick DC/DC power module support to the q54sj108a2 pmbus driver, from upstream: https://lore.kernel.org/all/20260316-add-q54sn120a1-q54q54sw120a7-v2-0-60e6182cc4a7@gmail.com/

Verification:

On NH-4220 platform running image with these kernel patches:

admin@abcd162:~$ cd /sys/bus/i2c/devices/83-0060/
admin@abcd162:/sys/bus/i2c/devices/83-0060$ ls
driver  hwmon  modalias  name  pec  power  subsystem  uevent
admin@abcd162:/sys/bus/i2c/devices/83-0060$ ls -l driver
lrwxrwxrwx 1 root root 0 Aug 22 00:09 driver -> ../../../../../../../../bus/i2c/drivers/q54sj108a2
admin@abcd162:/sys/bus/i2c/devices/83-0060$ show plat temp | grep IBV
                IBV_DCDC0         29          110.0       N/A           130.0            N/A      False  20260822 00:09:40
                IBV_DCDC1         29          110.0       N/A           130.0            N/A      False  20260822 00:09:40
                IBV_DCDC2         31          110.0       N/A           130.0            N/A      False  20260822 00:09:40
admin@abcd162:/sys/bus/i2c/devices/83-0060$ show plat volt | grep IBV
IBV_DCDC0_OUTPUT  12330.0 mV    13500.0       N/A           14500            N/A      False  20260822 00:09:30
IBV_DCDC1_OUTPUT  12332.0 mV    13500.0       N/A           14500            N/A      False  20260822 00:09:30
IBV_DCDC2_OUTPUT  12329.0 mV    13500.0       N/A           14500            N/A      False  20260822 00:09:30
admin@abcd162:/sys/bus/i2c/devices/83-0060$ show plat curr | grep IBV
IBV_DCDC0_OUTPUT   13500.0 mA  190000              N/A  240000                    N/A      False  20260822 00:09:30
IBV_DCDC1_OUTPUT   13000.0 mA  190000              N/A  240000                    N/A      False  20260822 00:09:30
IBV_DCDC2_OUTPUT   11000.0 mA  190000              N/A  240000                    N/A      False  20260822 00:09:30
admin@abcd162:/sys/bus/i2c/devices/83-0060$
root@abcd162:/sys/kernel/debug/pmbus/hwmon90# ls
mfr_date  mfr_location  mfr_revision  q54sj108a2  status0_cml    status0_iout  status0_temp
mfr_id    mfr_model     mfr_serial    status0     status0_input  status0_mfr   status0_vout
root@abcd162:/sys/kernel/debug/pmbus/hwmon90/q54sj108a2# ls -al
total 0
drwxr-xr-x 2 root root 0 Aug 22 00:08 .
drwxr-xr-x 3 root root 0 Aug 22 00:08 ..
--w------- 1 root root 0 Aug 22 00:08 blackbox_erase
-r--r--r-- 1 root root 0 Aug 22 00:08 blackbox_read
-r--r--r-- 1 root root 0 Aug 22 00:08 blackbox_read_offset
--w------- 1 root root 0 Aug 22 00:08 blackbox_set_offset
--w------- 1 root root 0 Aug 22 00:08 clear_fault
-r--r--r-- 1 root root 0 Aug 22 00:08 flash_key
-rw-r--r-- 1 root root 0 Aug 22 00:08 io_oc_response
-r--r--r-- 1 root root 0 Aug 22 00:08 mfr_id
-r--r--r-- 1 root root 0 Aug 22 00:08 mfr_location
-r--r--r-- 1 root root 0 Aug 22 00:08 mfr_model
-r--r--r-- 1 root root 0 Aug 22 00:08 mfr_revision
-rw-r--r-- 1 root root 0 Aug 22 00:08 operation
-r--r--r-- 1 root root 0 Aug 22 00:08 pmbus_revision
--w------- 1 root root 0 Aug 22 00:08 store_default
-rw-r--r-- 1 root root 0 Aug 22 00:08 vo_ov_response
-r--r--r-- 1 root root 0 Aug 22 00:08 write_protect
root@abcd162:/sys/kernel/debug/pmbus/hwmon90/q54sj108a2#

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[mssonicbld]

/azp run

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[antonio-nexthop]

Hi @saiarcot895, can I please get a review on this PR? Thank you for your help!

[paulmenzel]

It’d be great if you could copy the merge/pull request description to the commit message, as, I believe, the merge request description does not end up in the git archive. Otherwise, it looks good. Thank you for backporting. You might want to ask upstream to backport the support.

[mssonicbld]

/azp run

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