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| author | Caesar Wang <wxt@rock-chips.com> | 2016-03-14 16:01:53 +0800 |
|---|---|---|
| committer | Caesar Wang <wxt@rock-chips.com> | 2016-03-17 16:00:21 +0800 |
| commit | 5771d2fe5d099fc8c6b9db6a71af26a99724f6f2 (patch) | |
| tree | a8a40976f634ef43092385c8f4acfa457ad0984c | |
| parent | a42d665a3c05e23df0f2700abdc801e7b136a67a (diff) | |
| download | v4.1-5771d2fe5d099fc8c6b9db6a71af26a99724f6f2.tar.gz | |
UPSTREAM: net: arc_emac: add phy reset is optional for device tree
This patch adds the following property for arc_emac.
1) phy-reset-gpios:
The phy-reset-gpio is an optional property for arc emac device tree boot.
Change the binding document to match the driver code.
2) phy-reset-duration:
Different boards may require different phy reset duration. Add property
phy-reset-duration for device tree probe, so that the boards that need
a longer reset duration can specify it in their device tree.
Anyway, we can add the above property for arc emac.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc; Alexander Kochetkov <al.kochet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bug: 27311701
Patchset: Add the emac phy reset for document
(cherry picked from git.kernel.org davem/net-next.git master
commit 8700eee6271c932b2747a6b157655f546c27e7ad)
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Change-Id: Ie7f06ec9aa6171a551f8d0d9e8d1bc3f8c680e2f
| -rw-r--r-- | Documentation/devicetree/bindings/net/arc_emac.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/arc_emac.txt b/Documentation/devicetree/bindings/net/arc_emac.txt index a1d71eb43b2..c73a0e9c625 100644 --- a/Documentation/devicetree/bindings/net/arc_emac.txt +++ b/Documentation/devicetree/bindings/net/arc_emac.txt @@ -7,6 +7,13 @@ Required properties: - max-speed: see ethernet.txt file in the same directory. - phy: see ethernet.txt file in the same directory. +Optional properties: +- phy-reset-gpios : Should specify the gpio for phy reset +- phy-reset-duration : Reset duration in milliseconds. Should present + only if property "phy-reset-gpios" is available. Missing the property + will have the duration be 1 millisecond. Numbers greater than 1000 are + invalid and 1 millisecond will be used instead. + Clock handling: The clock frequency is needed to calculate and set polling period of EMAC. It must be provided by one of: |