linux-kernel - [PATCH 17/18] Documentation: dt: add Vybrid DDR memory controller bindings

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Date:	Wed,  9 Mar 2016 18:16:58 -0800
From:	Stefan Agner <stefan@...er.ch>
To:	shawnguo@...nel.org, mturquette@...libre.com, sboyd@...eaurora.org
Cc:	kernel@...gutronix.de, sergeimir@...raft.com, tglx@...utronix.de,
	jason@...edaemon.net, marc.zyngier@....com, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
	Stefan Agner <stefan@...er.ch>
Subject: [PATCH 17/18] Documentation: dt: add Vybrid DDR memory controller bindings

Add device-tree bindings of Vybrids LPDDR2/DDR3 SDRAM Memory
Controller. Access to the device is required to put the memory
into self-refresh mode.

Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 .../bindings/arm/freescale/fsl,vf610-ddrmc.txt     | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/freescale/fsl,vf610-ddrmc.txt

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,vf610-ddrmc.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,vf610-ddrmc.txt
new file mode 100644
index 0000000..56a71d6
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,vf610-ddrmc.txt
@@ -0,0 +1,23 @@
+Freescale Vybrid LPDDR2/DDR3 SDRAM Memory Controller
+
+The memory controller supports high performance applications for 16-bit or
+8-bit DDR2, or LPDDR SDRAM memories.
+
+Required properties:
+- compatible:	"fsl,vf610-ddrmc"
+- reg:		the register range of the DDRMC registers
+- clocks:	DDRMC main clock to clock memory and access registers.
+- clock-names:	Must contain "ddrc", matching entry in the clocks property.
+- fsl,has-cke-reset-pulls:
+		States whether pull-down/up are populated on DDR CKE/RESET
+		signals to allow using DDR self-refresh modes (see Vybrid
+		Hardware Development Guide for details).
+
+Example:
+	ddrmc: ddrmc@...ae000 {
+		compatible = "fsl,vf610-ddrmc";
+		reg = <0x400ae000 0x1000>;
+		clocks = <&clks VF610_CLK_DDRMC>;
+		clock-names = "ddrc";
+		fsl,has-cke-reset-pulls;
+	}
-- 
2.7.2