Re: [PATCH v2 01/10] Document: DT: mediatek: multiple base address support for sysirq
From: Rob Herring <robh@kernel.org>
Date: 2017-02-08 23:20:44
Also in:
linux-clk, linux-mediatek, lkml
On Mon, Feb 06, 2017 at 08:15:27PM +0800, Mars Cheng wrote:
quoted hunk ↗ jump to hunk
This describes how to specify multiple base addresses for sysirq in mediatek platforms. Signed-off-by: Mars Cheng <redacted> --- .../interrupt-controller/mediatek,sysirq.txt | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)diff --git a/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt b/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt index 9d1d72c..1718454 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt@@ -18,16 +18,21 @@ Required properties: "mediatek,mt2701-sysirq" - interrupt-controller : Identifies the node as an interrupt controller - #interrupt-cells : Use the same format as specified by GIC in arm,gic.txt. +- #intpol-bases: Indicate how many base addresses to be used, default is 1.
There is no point in this. It can either be implied by the compatible string or you just try to get the resource for the 2nd region. (Or in DT terms, get the size of reg.)
- interrupt-parent: phandle of irq parent for sysirq. The parent must
use the same interrupt-cells format as GIC.
- reg: Physical base address of the intpol registers and length of memory
- mapped region.
+ mapped region. Could be multiple bases here. Ex: mt6797 needs 2 reg, others
+ need 1. If not set, the default is 1.
Example:
- sysirq: interrupt-controller@10200100 {
- compatible = "mediatek,mt6589-sysirq", "mediatek,mt6577-sysirq";
+ sysirq: intpol-controller@10200620 {
+ compatible = "mediatek,mt6797-sysirq",
+ "mediatek,mt6577-sysirq";
interrupt-controller;
#interrupt-cells = <3>;
+ #intpol-bases = <2>;
interrupt-parent = <&gic>;
- reg = <0 0x10200100 0 0x1c>;
+ reg = <0 0x10220620 0 0x20>,
+ <0 0x10220690 0 0x10>;
};
--
1.7.9.5
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