diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/bus/mvebu-mbus.txt | 17 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/memory-controllers/mvebu-sdram-controller.txt | 21 |
2 files changed, 31 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/bus/mvebu-mbus.txt b/Documentation/devicetree/bindings/bus/mvebu-mbus.txt index 5fa44f52a0b8..5e16c3ccb061 100644 --- a/Documentation/devicetree/bindings/bus/mvebu-mbus.txt +++ b/Documentation/devicetree/bindings/bus/mvebu-mbus.txt @@ -48,9 +48,12 @@ Required properties: - compatible: Should be set to "marvell,mbus-controller". - reg: Device's register space. - Two entries are expected (see the examples below): - the first one controls the devices decoding window and - the second one controls the SDRAM decoding window. + Two or three entries are expected (see the examples below): + the first one controls the devices decoding window, + the second one controls the SDRAM decoding window and + the third controls the MBus bridge (only with the + marvell,armada370-mbus and marvell,armadaxp-mbus + compatible strings) Example: @@ -67,7 +70,7 @@ Example: mbusc: mbus-controller@20000 { compatible = "marvell,mbus-controller"; - reg = <0x20000 0x100>, <0x20180 0x20>; + reg = <0x20000 0x100>, <0x20180 0x20>, <0x20250 0x8>; }; /* more children ...*/ @@ -126,7 +129,7 @@ are skipped. mbusc: mbus-controller@20000 { compatible = "marvell,mbus-controller"; - reg = <0x20000 0x100>, <0x20180 0x20>; + reg = <0x20000 0x100>, <0x20180 0x20>, <0x20250 0x8>; }; /* more children ...*/ @@ -170,7 +173,7 @@ Using this macro, the above example would be: mbusc: mbus-controller@20000 { compatible = "marvell,mbus-controller"; - reg = <0x20000 0x100>, <0x20180 0x20>; + reg = <0x20000 0x100>, <0x20180 0x20>, <0x20250 0x8>; }; /* other children */ @@ -266,7 +269,7 @@ See the example below, where a more complete device tree is shown: ranges = <0 MBUS_ID(0xf0, 0x01) 0 0x100000>; mbusc: mbus-controller@20000 { - reg = <0x20000 0x100>, <0x20180 0x20>; + reg = <0x20000 0x100>, <0x20180 0x20>, <0x20250 0x8>; }; interrupt-controller@20000 { 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 000000000000..89657d1d4cd4 --- /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@1400 { + compatible = "marvell,armada-xp-sdram-controller"; + reg = <0x1400 0x500>; +}; |