GRX350/500 in-kernel support

[i3roly]

hi,

i saw this repository in my perusal of sources that support the GRX350/550 processors.

does this kernel work for the dual core intel interaptiv mips devices?

if so, i'm very intrigued and want to determine if i can merge the changes from the GPL into 4.14 for my own build.

[paldier]

Intel’s sdk supports two kernels, 3.10 and 4.9, and does not support 4.14.
If you want to get more information about the 4.9 kernel, you can see https://gitlab.com/prpl-foundation/intel/linux/-/tree/ugw_8.4.2

[i3roly]

What's up paldier. This is exciting stuff. I'll get back to you on a few things. I want to mention that when I put the drivers/net dir in my own buldroot, it whined about LOGGER issues. admittedly, when I cloned your git and tried to build, I got errors that seemed to reflect differences between 4.14 and 4.9. someone as schooled as you could comment as to whether the existing code can be ported to 4.14? I'm trying to consolidate mips targets. From: paldier Sent: Friday, 2 April 2021 6:15 PM To: MerlinRdev/bluecave-merlin Reply To: MerlinRdev/bluecave-merlin Cc: gagan sidhu; Author Subject: Re: [MerlinRdev/bluecave-merlin] GRX350/500 in-kernel support (#21) Intel’s sdk supports two kernels, 3.10 and 4.9, and does not support 4.14. If you want to get more information about the 4.9 kernel, you can see https://gitlab.com/prpl-foundation/intel/linux/-/tree/intel-4.9.218 — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#21 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AITLEG7SXOJ3GK4PJTSICQLTGZMZ7ANCNFSM42JIODIA>.

[i3roly]

greetings you beautiful man @paldier.

i can confirm i have succesfully loaded mtlkroot using your built root built against my DD-WRT 4.14 :

Apr  2 19:41:37 DD-WRT user.info kernel: Loading modules backported from Linux version v5.1-e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd
Apr  2 19:41:37 DD-WRT user.info kernel: Backport generated by backports.git v3.10.104
Apr  2 19:41:37 DD-WRT user.warn kernel: [MTLKD] Allocated netdev rtlog0 addr 8395c000
Apr  2 19:41:42 DD-WRT user.warn kernel: [MTLKD] Netlink module cleanup done
Apr  2 19:41:42 DD-WRT user.warn kernel: [MTLKD] Unloading rtlog_netdev

what i found interesting is that it would not load against my v5.10.16-1 backports

[92073.497172] Loading modules backported from Linux version wireless-drivers-next-2021-02-12-0-g9d083348e938
[92073.497186] Backport generated by backports.git v5.10.16-1-0-g21d2a1d2
[92073.505179] [MTLKD] Allocated netdev rtlog0 addr 85a5f800
[92073.505253] [MTLKD] Failed to register Netlink family: res=-22
[92073.505282] [MTLKD] Unloading rtlog_netdev

the only concern i have with the porting is the warning:

warning: ignoring attribute ‘packed’ because it conflicts with attribute ‘aligned’

Uwe spoke about it here and i'm not sure if i should be too worried.

does this look promising enough for me to grab this clearance RAX40? my only other reservation is about the actual arch/mips/lantiq code for the GRX500 (which is what i presumably enable for the RAX40) not compiling cleanly.

given this driver compiled relatively cleanly, should i be concerned?

[paldier]

RAX40? prplwrt is the best.

[i3roly]

RAX40 is the netgear AX4 (see here https://wikidevi.wi-cat.ru/Netgear_RAX40_(Nighthawk_AX4))

i've never used PRPLWRT but from what i can see that is a different group of users.

i'm trying to bring this platform to the mainstream.

[paldier]

I don't think openwrt will accept patches related to grx500.

[i3roly]

i'm not a part of openwrt or dd-wrt. both of their leaders do not like me because i criticise their choices and call them stupid.

i am curious to see if i can patch 4.14 using the prplfoundation 4.9 patches.

i don't know why openwrt abandoned any lantiq support. i was surprised to see they even had patches for 4.9.

their mt76 driver for the mt7615 driver is extremely poor, but they continue to plug their ears whilst making loud noises to drown out any criticisms. it seems this is how things operate with certain groups.

[paldier]

There are some lantiq developers in the prplwrt, so joining the prplwrt is the best choice.

[i3roly]

I will be perusing the sources in the next few days. I'm happy I got this driver to build. Now I have to see if the changes to mips CPS/etc between 4.9 and 4.14‎ are tolerated by the existing grx500 arch/mips/lantiq code From: paldier Sent: Friday, 2 April 2021 8:39 PM To: MerlinRdev/bluecave-merlin Reply To: MerlinRdev/bluecave-merlin Cc: gagan sidhu; Author Subject: Re: [MerlinRdev/bluecave-merlin] GRX350/500 in-kernel support (#21) There are some lantiq developers in the prplwrt, so joining the prplwrt is the best choice. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#21 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AITLEGYRO4V6SFUBAXHU5VTTGZ5XXANCNFSM42JIODIA>.

[i3roly]

what's up @paldier
so now that i have full support for popular D-LINK devices, i'm looking at this stuff again.

i have a question for you man, which 4.9 patches are important?

i saw this list of patches: https://github.com/paldier/prplwrt/tree/master/target/linux/lantiq/patches-4.14

but i also remember seeing one directory called "patches-4.9" that had over 100 patches. some of them were hotfixes to the drivers:
(edit found it!!):
https://github.com/prplfoundation/feed-intel/tree/intel-19.07/intel_mips/patches-4.9

i want to be sure i'm using the latest and up-to-date patches.

[i3roly]

hello brother @paldier. i applied all the patches, lol.

my question for you is what a good configuration file would be.

https://github.com/paldier/feed_target_mips/blob/ugw-8.4.2-cleanup/xrx500_4kec/config-default

seems very minimal. i wanna know what ehternet driver, spi , etc i should be configuring.

let's say i want to try this with TP-LINK AX50

[paldier]

4kec is only for bootcore, useless

[i3roly]

should i use this as a template? :

https://github.com/paldier/feed_target_mips/blob/ugw-8.4.2-cleanup/xrx500/config-default

also, in terms of kernel configuration, can we consider PXB4385/PXB4395/GRX350 as equivalent?

[paldier]

There are 6 versions of grx350, only one is not discontinued, npu is automatically configured by firmware, so it's no different to you.

[i3roly]

so CONFIG_SOC_GRX500 covers all of the existing SoCs (which are "GRX350" i assume)?