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[net-next,v2,2/3] dt-bindings: mscc: Add RGMII RX and TX delay tuning

Message ID 20230426104313.28950-3-harini.katakam@amd.com
State New
Headers show
Series Add support for VSC8531_02 PHY and DT RGMII tuning | expand

Commit Message

Harini Katakam April 26, 2023, 10:43 a.m. UTC 
From: Harini Katakam <harini.katakam@xilinx.com>

Add optional properties to tune RGMII RX and TX delay. The current
default value in the Linux driver, when the phy-mode is rgmii-id,
is 2ns for both. These properties take priority if specified.

Signed-off-by: Harini Katakam <harini.katakam@amd.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
v2:
- Updated DT binding description and commit for optional delay tuning
to be clearer on the precedence
- Updated dt property name to include vendor instead of phy device name

 Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt b/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
index 0a3647fe331b..2b779bc3096b 100644
--- a/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
+++ b/Documentation/devicetree/bindings/net/mscc-phy-vsc8531.txt
@@ -33,6 +33,8 @@  Optional properties:
 			  VSC8531_DUPLEX_COLLISION (8).
 - load-save-gpios	: GPIO used for the load/save operation of the PTP
 			  hardware clock (PHC).
+- mscc,rx-delay		: RGMII RX delay. Allowed values are 0.2 - 3.4 ns.
+- mscc,tx-delay		: RGMII TX delay. Allowed values are 0.2 - 3.4 ns.
 
 
 Table: 1 - Edge rate change