summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorBruno Thomsen <bruno.thomsen@gmail.com>2020-07-30 21:57:46 +0200
committerDavid S. Miller <davem@davemloft.net>2020-08-03 15:01:02 -0700
commitc44a1b91753e54a9e9381ac6411ec36389d21453 (patch)
tree36a455de9b9b59df923a87c8518ff21cb25e46e9 /Documentation
parentbd0b33b24897ba9ddad221e8ac5b6f0e38a2e004 (diff)
dt-bindings: net: mdio: add reset-post-delay-us property
Add "reset-post-delay-us" parameter to MDIO bus properties, so it's possible to add a delay after reset deassert. This is optional in case external hardware slows down release of the reset signal. Signed-off-by: Bruno Thomsen <bruno.thomsen@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/net/mdio.yaml7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/mdio.yaml b/Documentation/devicetree/bindings/net/mdio.yaml
index d6a3bf8550eb..26afb556dfae 100644
--- a/Documentation/devicetree/bindings/net/mdio.yaml
+++ b/Documentation/devicetree/bindings/net/mdio.yaml
@@ -39,6 +39,13 @@ properties:
and must therefore be appropriately determined based on all devices
requirements (maximum value of all per-device RESET pulse widths).
+ reset-post-delay-us:
+ description:
+ Delay after reset deassert in microseconds. It applies to all MDIO
+ devices and it's determined by how fast all devices are ready for
+ communication. This delay happens just before e.g. Ethernet PHY
+ type ID auto detection.
+
clock-frequency:
description:
Desired MDIO bus clock frequency in Hz. Values greater than IEEE 802.3