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| author | Bruno Thomsen <bruno.thomsen@gmail.com> | 2020-07-30 21:57:46 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-08-04 00:01:02 +0200 |
| commit | c44a1b91753e54a9e9381ac6411ec36389d21453 (patch) | |
| tree | 36a455de9b9b59df923a87c8518ff21cb25e46e9 /Documentation | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net (diff) | |
| download | linux-c44a1b91753e54a9e9381ac6411ec36389d21453.tar.xz linux-c44a1b91753e54a9e9381ac6411ec36389d21453.zip | |
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.yaml | 7 |
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 |