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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/devicetree/bindings/memory-controllers/ath79-ddr-controller.txt
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
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+Binding for Qualcomm Atheros AR7xxx/AR9xxx DDR controller
+
+The DDR controller of the ARxxx and AR9xxx families provides an interface
+to flush the FIFO between various devices and the DDR. This is mainly used
+by the IRQ controller to flush the FIFO before running the interrupt handler
+of such devices.
+
+Required properties:
+
+- compatible: has to be "qca,<soc-type>-ddr-controller",
+ "qca,[ar7100|ar7240]-ddr-controller" as fallback.
+ On SoC with PCI support "qca,ar7100-ddr-controller" should be used as
+ fallback, otherwise "qca,ar7240-ddr-controller" should be used.
+- reg: Base address and size of the controllers memory area
+- #qca,ddr-wb-channel-cells: has to be 1, the index of the write buffer
+ channel
+
+Example:
+
+ ddr_ctrl: memory-controller@18000000 {
+ compatible = "qca,ar9132-ddr-controller",
+ "qca,ar7240-ddr-controller";
+ reg = <0x18000000 0x100>;
+
+ #qca,ddr-wb-channel-cells = <1>;
+ };
+
+ ...
+
+ interrupt-controller {
+ ...
+ qca,ddr-wb-channel-interrupts = <2>, <3>, <4>, <5>;
+ qca,ddr-wb-channels = <&ddr_ctrl 3>, <&ddr_ctrl 2>,
+ <&ddr_ctrl 0>, <&ddr_ctrl 1>;
+ };