From mboxrd@z Thu Jan 1 00:00:00 1970 From: thomas.petazzoni@free-electrons.com (Thomas Petazzoni) Date: Fri, 14 Nov 2014 16:21:21 +0100 Subject: [PATCHv2 01/16] Documentation: dt-bindings: minimal documentation for MVEBU SDRAM controller In-Reply-To: <1415978496-9334-1-git-send-email-thomas.petazzoni@free-electrons.com> References: <1415978496-9334-1-git-send-email-thomas.petazzoni@free-electrons.com> Message-ID: <1415978496-9334-2-git-send-email-thomas.petazzoni@free-electrons.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The suspend/resume code for Armada XP has to modify certain registers of the SDRAM controller. Therefore, we need to define a Device Tree binding for this hardware block. Signed-off-by: Thomas Petazzoni Cc: devicetree at vger.kernel.org Cc: Kumar Gala Cc: Ian Campbell Cc: Mark Rutland Cc: Rob Herring Reviewed-by: Gregory CLEMENT --- .../memory-controllers/mvebu-sdram-controller.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt diff --git a/Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt b/Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt new file mode 100644 index 0000000..89657d1 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt @@ -0,0 +1,21 @@ +Device Tree bindings for MVEBU SDRAM controllers + +The Marvell EBU SoCs all have a SDRAM controller. The SDRAM controller +differs from one SoC variant to another, but they also share a number +of commonalities. + +For now, this Device Tree binding documentation only documents the +Armada XP SDRAM controller. + +Required properties: + + - compatible: for Armada XP, "marvell,armada-xp-sdram-controller" + - reg: a resource specifier for the register space, which should + include all SDRAM controller registers as per the datasheet. + +Example: + +sdramc at 1400 { + compatible = "marvell,armada-xp-sdram-controller"; + reg = <0x1400 0x500>; +}; -- 2.1.0