From mboxrd@z Thu Jan 1 00:00:00 1970 From: Caesar Wang Subject: [PATCH v2 2/9] net: arc_emac: add phy reset is optional for device tree Date: Sun, 13 Mar 2016 17:07:35 +0800 Message-ID: <1457860062-5514-3-git-send-email-wxt@rock-chips.com> References: <1457860062-5514-1-git-send-email-wxt@rock-chips.com> Return-path: In-Reply-To: <1457860062-5514-1-git-send-email-wxt@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org To: Heiko Stuebner , "David S. Miller" , Rob Herring Cc: linux-rockchip@lists.infradead.org, keescook@google.com, leozwang@google.com, sergei.shtylyov@cogentembedded.com, netdev@vger.kernel.org, Caesar Wang , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org This patch adds the following property for arc_emac. 1) 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 --- Changes in v2: None 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..8e84b52 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: +- reset-gpios : Should specify the gpio for phy reset +- phy-reset-duration : Reset duration in milliseconds. Should present + only if property "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