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| author | Caesar Wang <wxt@rock-chips.com> | 2016-03-14 16:01:53 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-03-16 19:28:01 -0400 |
| commit | 8700eee6271c932b2747a6b157655f546c27e7ad (patch) | |
| tree | 2b0b383d3dd06eb692992bd865f6691ce0465c0d /Documentation | |
| parent | 434242cd6080dde0103d3b4f28daec5c742c465e (diff) | |
| download | linux-8700eee6271c932b2747a6b157655f546c27e7ad.tar.bz2 | |
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>
Diffstat (limited to 'Documentation')
| -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 a1d71eb43b20..c73a0e9c625e 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: |