From b735154aeb3366b249ab52bbfa0aa8a4c61c9a44 Mon Sep 17 00:00:00 2001
From: Pawel Dembicki <paweldembicki@gmail.com>
Date: Mon, 29 Jul 2024 23:02:01 +0200
Subject: [PATCH] dt-bindings: net: dsa: vsc73xx: add {rx,tx}-internal-delay-ps
Add a schema validator to vitesse,vsc73xx.yaml for MAC-level RGMII delays
in the CPU port. Additionally, valid values for VSC73XX were defined,
and a common definition for the RX and TX valid range was created.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
.../bindings/net/dsa/vitesse,vsc73xx.yaml | 32 +++++++++++++++++++
1 file changed, 32 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.yaml b/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.yaml
index b99d7a694b70..51cf574249be 100644
--- a/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.yaml
+++ b/Documentation/devicetree/bindings/net/dsa/vitesse,vsc73xx.yaml
@@ -52,6 +52,25 @@ properties:
allOf:
- $ref: dsa.yaml#/$defs/ethernet-ports
+patternProperties:
+ "^(ethernet-)?ports$":
+ additionalProperties: true
+ patternProperties:
+ "^(ethernet-)?port@6$":
+ allOf:
+ - if:
+ properties:
+ phy-mode:
+ contains:
+ enum:
+ - rgmii
+ then:
+ properties:
+ rx-internal-delay-ps:
+ $ref: "#/$defs/internal-delay-ps"
+ tx-internal-delay-ps:
+ $ref: "#/$defs/internal-delay-ps"
+
# This checks if reg is a chipselect so the device is on an SPI
# bus, the if-clause will fail if reg is a tuple such as for a
# platform device.
@@ -67,6 +86,15 @@ required:
- compatible
- reg
+$defs:
+ internal-delay-ps:
+ description:
+ Disable tunable delay lines using 0 ps, or enable them and select
+ the phase between 1400 ps and 2000 ps in increments of 300 ps.
+ default: 2000
+ enum:
+ [0, 1400, 1700, 2000]
+
unevaluatedProperties: false
examples:
@@ -108,6 +136,8 @@ examples:
reg = <6>;
ethernet = <&gmac1>;
phy-mode = "rgmii";
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
fixed-link {
speed = <1000>;
full-duplex;
@@ -150,6 +180,8 @@ examples:
ethernet-port@6 {
reg = <6>;
ethernet = <&enet0>;
+ rx-internal-delay-ps = <0>;
+ tx-internal-delay-ps = <0>;
phy-mode = "rgmii";
fixed-link {
speed = <1000>;
--
2.30.9