linux-kernel - [PATCH 1/2] devicetree:bindings: add devicetree bindings for ceva ahci

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Message-ID: <1432180625-25159-2-git-send-email-suneel.garapati@xilinx.com>
Date:	Thu, 21 May 2015 09:27:04 +0530
From:	Suneel Garapati <suneel.garapati@...inx.com>
To:	<linux-ide@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:	<tj@...nel.org>, <michals@...inx.com>, <sorenb@...inx.com>,
	<devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"Suneel Garapati" <suneel.garapati@...inx.com>
Subject: [PATCH 1/2] devicetree:bindings: add devicetree bindings for ceva ahci

adds bindings for CEVA AHCI SATA controller. optional property
broken-gen2 is useful incase of hardware speed limitation.

Signed-off-by: Suneel Garapati <suneel.garapati@...inx.com>
---
 Documentation/devicetree/bindings/ata/ahci-ceva.txt | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/ata/ahci-ceva.txt

diff --git a/Documentation/devicetree/bindings/ata/ahci-ceva.txt b/Documentation/devicetree/bindings/ata/ahci-ceva.txt
new file mode 100644
index 0000000..7ca8b97
--- /dev/null
+++ b/Documentation/devicetree/bindings/ata/ahci-ceva.txt
@@ -0,0 +1,20 @@
+Binding for CEVA AHCI SATA Controller
+
+Required properties:
+  - reg: Physical base address and size of the controller's register area.
+  - compatible: Compatibility string. Must be 'ceva,ahci-1v84'.
+  - clocks: Input clock specifier. Refer to common clock bindings.
+  - interrupts: Interrupt specifier. Refer to interrupt binding.
+
+Optional properties:
+  - ceva,broken-gen2: limit to gen1 speed instead of gen2.
+
+Examples:
+	ahci@...c0000 {
+		compatible = "ceva,ahci-1v84";
+		reg = <0xfd0c0000 0x200>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 133 4>;
+		clocks = <&clkc SATA_CLK_ID>;
+		ceva,broken-gen2;
+	};
--
2.1.2
--
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