diff mbox series

[v12,3/4] dt-bindings: ethernet-phy: add optional brr-mode flag

Message ID 20240712150709.3134474-4-kamilh@axis.com (mailing list archive)
State Accepted
Commit 775631d7845b34996ceb0d975725c16d9a414430
Delegated to: Netdev Maintainers
Headers show
Series net: phy: bcm5481x: add support for BroadR-Reach mode | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 8 this patch: 8
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 12 of 12 maintainers
netdev/build_clang success Errors and warnings before: 8 this patch: 8
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 8 this patch: 8
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 14 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-07-13--03-00 (tests: 696)

Commit Message

Kamil Horák (2N) July 12, 2024, 3:07 p.m. UTC 
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) <kamilh@axis.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
 Documentation/devicetree/bindings/net/ethernet-phy.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Florian Fainelli July 14, 2024, 8:12 p.m. UTC | #1 
On 7/12/2024 8:07 AM, 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.
> 
> Signed-off-by: Kamil Horák (2N) <kamilh@axis.com>
> Reviewed-by: Rob Herring (Arm) <robh@kernel.org>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
index 8fb2a6ee7e5b..d9b62741a225 100644
--- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml
@@ -93,6 +93,14 @@  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:
+      If set, indicates the network cable interface is an alternative one as
+      defined in the BroadR-Reach link mode specification under 1BR-100 and
+      1BR-10 names. The PHY must be configured to operate in BroadR-Reach mode
+      by software.
+
   clocks:
     maxItems: 1
     description: