linux-kernel - [PATCH net-next v2 8/8] dt-bindings: net: sparx5: document RGMII MAC delays

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Message-ID: <20241113-sparx5-lan969x-switch-driver-4-v2-8-0db98ac096d1@microchip.com>
Date: Wed, 13 Nov 2024 22:11:16 +0100
From: Daniel Machon <daniel.machon@...rochip.com>
To: <UNGLinuxDriver@...rochip.com>, Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, "Lars
 Povlsen" <lars.povlsen@...rochip.com>, Steen Hegelund
	<Steen.Hegelund@...rochip.com>, Horatiu Vultur
	<horatiu.vultur@...rochip.com>, Russell King <linux@...linux.org.uk>,
	<jacob.e.keller@...el.com>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>
CC: <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH net-next v2 8/8] dt-bindings: net: sparx5: document RGMII
 MAC delays

The lan969x switch device supports two RGMII port interfaces that can be
configured for MAC level rx and tx delays.

Document two new properties {rx,tx}-internal-delay-ps. Make them
required properties, if the phy-mode is one of: rgmii, rgmii_id,
rgmii-rxid or rgmii-txid. Also specify accepted values.

Signed-off-by: Daniel Machon <daniel.machon@...rochip.com>
---
 .../bindings/net/microchip,sparx5-switch.yaml        | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml b/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml
index dedfad526666..a3f2b70c5c77 100644
--- a/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml
+++ b/Documentation/devicetree/bindings/net/microchip,sparx5-switch.yaml
@@ -129,6 +129,26 @@ properties:
             minimum: 0
             maximum: 383
 
+        allOf:
+          - if:
+              properties:
+                phy-mode:
+                  contains:
+                    enum:
+                      - rgmii
+                      - rgmii-rxid
+                      - rgmii-txid
+                      - rgmii-id
+            then:
+              properties:
+                rx-internal-delay-ps:
+                  enum: [0, 1000, 1700, 2000, 2500, 3000, 3300]
+                tx-internal-delay-ps:
+                  enum: [0, 1000, 1700, 2000, 2500, 3000, 3300]
+              required:
+                - rx-internal-delay-ps
+                - tx-internal-delay-ps
+
         required:
           - reg
           - phys

-- 
2.34.1