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Message-Id: <1457942520-12859-3-git-send-email-wxt@rock-chips.com> Date: Mon, 14 Mar 2016 16:01:53 +0800 From: Caesar Wang <wxt@...k-chips.com> To: Heiko Stuebner <heiko@...ech.de>, "David S. Miller" <davem@...emloft.net>, Rob Herring <robh+dt@...nel.org> Cc: linux-rockchip@...ts.infradead.org, keescook@...gle.com, leozwang@...gle.com, sergei.shtylyov@...entembedded.com, netdev@...r.kernel.org, Caesar Wang <wxt@...k-chips.com>, devicetree@...r.kernel.org, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, linux-kernel@...r.kernel.org Subject: [PATCH v3 2/9] 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@...k-chips.com> Cc: Rob Herring <robh+dt@...nel.org> Cc: devicetree@...r.kernel.org Cc: netdev@...r.kernel.org Cc: "David S. Miller" <davem@...emloft.net> Cc: Sergei Shtylyov <sergei.shtylyov@...entembedded.com> Cc; Alexander Kochetkov <al.kochet@...il.com> --- Changes in v3: - As Sergei comments, the original name is better, so %s/reset-gpios/phy-reset-gpios - Add the Cc people. Changes in v2: - %s/phy-reset-gpios/reset-gpios Documentation/devicetree/bindings/net/arc_emac.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/net/arc_emac.txt b/Documentation/devicetree/bindings/net/arc_emac.txt index a1d71eb..c73a0e9 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: -- 1.9.1
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