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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-26 16:05:55 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-26 16:05:55 -0400
commit30b842889eea1bea02dff55b13d2ddf07a46ce78 (patch)
tree827d96b61384d5fe22ed7aeba02b34026648046e /Documentation/devicetree/bindings/arm
parent84a442b9a16ee69243ce7fce5d6f6f9c3fbdee68 (diff)
parent820f3dd7964f1889baaaaa0c2ba45d05bb619f66 (diff)
Merge tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc: soc specific changes (part 2) from Olof Johansson: "This adds support for the spear13xx platform, which has first been under review a long time ago and finally been completed after generic spear work has gone into the clock, dt and pinctrl branches. Also a number of updates for the samsung socs are part of this branch." Fix up trivial conflicts in drivers/gpio/gpio-samsung.c that look much worse than they are: the exonys5 init code was refactored in commit fd454997d687 ("gpio: samsung: refactor gpiolib init for exynos4/5"), and then commit f10590c9836c ("ARM: EXYNOS: add GPC4 bank instance") added a new gpio chip define and did tiny updates to the init code. So the conflict diff looks like hell, but it's actually a fairly simple change. * tag 'soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (34 commits) ARM: exynos: fix building with CONFIG_OF disabled ARM: EXYNOS: Add AUXDATA for i2c controllers ARM: dts: Update device tree source files for EXYNOS5250 ARM: EXYNOS: Add device tree support for interrupt combiner ARM: EXYNOS: Add irq_domain support for interrupt combiner ARM: EXYNOS: Remove a new bus_type instance for EXYNOS5 ARM: EXYNOS: update irqs for EXYNOS5250 SoC ARM: EXYNOS: Add pre-divider and fout mux clocks for bpll and mpll ARM: EXYNOS: add GPC4 bank instance ARM: EXYNOS: Redefine IRQ_MCT_L0,1 definition ARM: EXYNOS: Modify the GIC physical address for static io-mapping ARM: EXYNOS: Add watchdog timer clock instance pinctrl: SPEAr1310: Fix pin numbers for clcd_high_res SPEAr: Update MAINTAINERS and Documentation SPEAr13xx: Add defconfig SPEAr13xx: Add compilation support SPEAr13xx: Add dts and dtsi files pinctrl: Add SPEAr13xx pinctrl drivers pinctrl: SPEAr: Create macro for declaring GPIO PINS SPEAr13xx: Add common clock framework support ...
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
-rw-r--r--Documentation/devicetree/bindings/arm/samsung/interrupt-combiner.txt52
-rw-r--r--Documentation/devicetree/bindings/arm/spear.txt14
2 files changed, 59 insertions, 7 deletions
diff --git a/Documentation/devicetree/bindings/arm/samsung/interrupt-combiner.txt b/Documentation/devicetree/bindings/arm/samsung/interrupt-combiner.txt
new file mode 100644
index 000000000000..f2f2171e530e
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/samsung/interrupt-combiner.txt
@@ -0,0 +1,52 @@
1* Samsung Exynos Interrupt Combiner Controller
2
3Samsung's Exynos4 architecture includes a interrupt combiner controller which
4can combine interrupt sources as a group and provide a single interrupt request
5for the group. The interrupt request from each group are connected to a parent
6interrupt controller, such as GIC in case of Exynos4210.
7
8The interrupt combiner controller consists of multiple combiners. Upto eight
9interrupt sources can be connected to a combiner. The combiner outputs one
10combined interrupt for its eight interrupt sources. The combined interrupt
11is usually connected to a parent interrupt controller.
12
13A single node in the device tree is used to describe the interrupt combiner
14controller module (which includes multiple combiners). A combiner in the
15interrupt controller module shares config/control registers with other
16combiners. For example, a 32-bit interrupt enable/disable config register
17can accommodate upto 4 interrupt combiners (with each combiner supporting
18upto 8 interrupt sources).
19
20Required properties:
21- compatible: should be "samsung,exynos4210-combiner".
22- interrupt-controller: Identifies the node as an interrupt controller.
23- #interrupt-cells: should be <2>. The meaning of the cells are
24 * First Cell: Combiner Group Number.
25 * Second Cell: Interrupt number within the group.
26- reg: Base address and size of interrupt combiner registers.
27- interrupts: The list of interrupts generated by the combiners which are then
28 connected to a parent interrupt controller. The format of the interrupt
29 specifier depends in the interrupt parent controller.
30
31Optional properties:
32- samsung,combiner-nr: The number of interrupt combiners supported. If this
33 property is not specified, the default number of combiners is assumed
34 to be 16.
35- interrupt-parent: pHandle of the parent interrupt controller, if not
36 inherited from the parent node.
37
38
39Example:
40
41 The following is a an example from the Exynos4210 SoC dtsi file.
42
43 combiner:interrupt-controller@10440000 {
44 compatible = "samsung,exynos4210-combiner";
45 interrupt-controller;
46 #interrupt-cells = <2>;
47 reg = <0x10440000 0x1000>;
48 interrupts = <0 0 0>, <0 1 0>, <0 2 0>, <0 3 0>,
49 <0 4 0>, <0 5 0>, <0 6 0>, <0 7 0>,
50 <0 8 0>, <0 9 0>, <0 10 0>, <0 11 0>,
51 <0 12 0>, <0 13 0>, <0 14 0>, <0 15 0>;
52 };
diff --git a/Documentation/devicetree/bindings/arm/spear.txt b/Documentation/devicetree/bindings/arm/spear.txt
index aa5f355cc947..0d42949df6c2 100644
--- a/Documentation/devicetree/bindings/arm/spear.txt
+++ b/Documentation/devicetree/bindings/arm/spear.txt
@@ -2,25 +2,25 @@ ST SPEAr Platforms Device Tree Bindings
2--------------------------------------- 2---------------------------------------
3 3
4Boards with the ST SPEAr600 SoC shall have the following properties: 4Boards with the ST SPEAr600 SoC shall have the following properties:
5
6Required root node property: 5Required root node property:
7
8compatible = "st,spear600"; 6compatible = "st,spear600";
9 7
10Boards with the ST SPEAr300 SoC shall have the following properties: 8Boards with the ST SPEAr300 SoC shall have the following properties:
11
12Required root node property: 9Required root node property:
13
14compatible = "st,spear300"; 10compatible = "st,spear300";
15 11
16Boards with the ST SPEAr310 SoC shall have the following properties: 12Boards with the ST SPEAr310 SoC shall have the following properties:
17
18Required root node property: 13Required root node property:
19
20compatible = "st,spear310"; 14compatible = "st,spear310";
21 15
22Boards with the ST SPEAr320 SoC shall have the following properties: 16Boards with the ST SPEAr320 SoC shall have the following properties:
17Required root node property:
18compatible = "st,spear320";
23 19
20Boards with the ST SPEAr1310 SoC shall have the following properties:
24Required root node property: 21Required root node property:
22compatible = "st,spear1310";
25 23
26compatible = "st,spear320"; 24Boards with the ST SPEAr1340 SoC shall have the following properties:
25Required root node property:
26compatible = "st,spear1340";