[OS-BUILD PATCH] redhat: Enable support for SN2201 system

[Ivan Vecera (via Email Bridge)]

From: Ivan Vecera <ivecera(a)redhat.com&gt;

redhat: Enable support for SN2201 system

Enable support for platform devices used on Nvidia SN2201
switch system.

Signed-off-by: Ivan Vecera <ivecera(a)redhat.com&gt;

diff --git a/redhat/configs/common/generic/CONFIG_NVSW_SN2201
b/redhat/configs/common/generic/CONFIG_NVSW_SN2201
index blahblah..blahblah 100644
--- a/redhat/configs/common/generic/CONFIG_NVSW_SN2201
+++ b/redhat/configs/common/generic/CONFIG_NVSW_SN2201
@@ -1 +1 @@
-# CONFIG_NVSW_SN2201 is not set
+CONFIG_NVSW_SN2201=m

--
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2136

[pbrobinson (via Email Bridge)]

From: pbrobinson on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2136#note_1163...

Why is this driver being enabled everywhere? From the Kconfig:
"The processor used on SN2201 is Intel Atom®Processor C Series, C3338R which
is one of the Denverton product families."

So it should just be enabled on x86.

Interestingly also it has deps on various REGMAP which while seemingly already
enabled in ark/RHEL they're not enabled via the RHEL config so probably needs
further explicit enablement so it's documented as such.

[Mark Langsdorf (via Email Bridge)]

From: Mark Langsdorf on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2136#note_1164...

The SN2201 enabling code is in drivers/platform, and it looks like it's an
architecture independent management device for server racks. See 662f24826f9.
Mellanox BlueField cards are specifically called out as "depends on ARM64",
and the fact that this driver doesn't have a similar dependency makes me
suspect it supports X86 and ARM64. But I could be wrong.

[pbrobinson (via Email Bridge)]

From: pbrobinson on gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2136#note_1164...

The SN2201 is a mutli port ethernet switch, while in theory it could be an
"architecture independent management device" in practice it's a 1U switch
and
it's Kconfig help text indicates it's a x86 device.
https://www.nvidia.com/en-us/networking/ethernet-switching/spectrum-sn2000/