There is a group of PHY chips supporting BroadR-Reach link modes in
a manner allowing for more or less identical register usage as standard
Clause 22 PHY.
These chips support standard Ethernet link modes as well, however, the
circuitry is mutually exclusive and cannot be auto-detected.
The link modes in question are 100Base-T1 as defined in IEEE802.3bw,
based on Broadcom's 1BR-100 link mode, and newly defined 10Base-T1BRR
(1BR-10 in Broadcom documents).
Add optional brr-mode flag to switch the PHY to BroadR-Reach mode.
Signed-off-by: Kamil Horák - 2N <[email protected]>
---
Documentation/devicetree/bindings/net/ethernet-phy.yaml | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
index 8fb2a6ee7e5b..0353ef98f2e1 100644
--- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
@@ -93,6 +93,13 @@ properties:
the turn around line low at end of the control phase of the
MDIO transaction.
+ brr-mode:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description:
+ Request the PHY to operate in BroadR-Reach mode. This means the
+ PHY will use the BroadR-Reach protocol to communicate with the other
+ end of the link, including LDS auto-negotiation if applicable.
+
clocks:
maxItems: 1
description:
--
2.39.2
On 13/06/2024 15:20, Kamil Horák - 2N wrote:
> There is a group of PHY chips supporting BroadR-Reach link modes in
> a manner allowing for more or less identical register usage as standard
> Clause 22 PHY.
> These chips support standard Ethernet link modes as well, however, the
> circuitry is mutually exclusive and cannot be auto-detected.
> The link modes in question are 100Base-T1 as defined in IEEE802.3bw,
> based on Broadcom's 1BR-100 link mode, and newly defined 10Base-T1BRR
> (1BR-10 in Broadcom documents).
>
> Add optional brr-mode flag to switch the PHY to BroadR-Reach mode.
<form letter>
Please use scripts/get_maintainers.pl to get a list of necessary people
and lists to CC. It might happen, that command when run on an older
kernel, gives you outdated entries. Therefore please be sure you base
your patches on recent Linux kernel.
Tools like b4 or scripts/get_maintainer.pl provide you proper list of
people, so fix your workflow. Tools might also fail if you work on some
ancient tree (don't, instead use mainline), work on fork of kernel
(don't, instead use mainline) or you ignore some maintainers (really
don't). Just use b4 and everything should be fine, although remember
about `b4 prep --auto-to-cc` if you added new patches to the patchset.
You missed at least devicetree list (maybe more), so this won't be
tested by automated tooling. Performing review on untested code might be
a waste of time, thus I will skip this patch entirely till you follow
the process allowing the patch to be tested.
Please kindly resend and include all necessary To/Cc entries.
</form letter>
Best regards,
Krzysztof