Re: [PATCH 1/4] Document: DT: Add bindings for mediatek MT6797 SoC Platform
From: Mars Cheng <hidden>
Date: 2016-09-08 14:09:04
Also in:
linux-clk, linux-mediatek, lkml
Hi Marc Thanks for your review. the response inlined. On Thu, 2016-09-08 at 13:37 +0100, Marc Zyngier wrote:
On 08/09/16 11:49, Mars Cheng wrote:quoted
This adds DT binding documentation for Mediatek MT6797. Signed-off-by: Mars Cheng <redacted> ---
[...]
quoted
diff --git a/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt b/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt index 9d1d72c..3d97eb4 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt@@ -8,6 +8,7 @@ Required properties: "mediatek,mt8173-sysirq" "mediatek,mt8135-sysirq" "mediatek,mt8127-sysirq" + "mediatek,mt6797-sysirq" "mediatek,mt6795-sysirq" "mediatek,mt6755-sysirq" "mediatek,mt6592-sysirq"@@ -21,7 +22,8 @@ Required properties: - 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 up to 2 registers here at max. Ex: 6797 needs 2 reg, + others need 1.Two things: - Please make this a separate patch that can be reviewed independently of the rest of the changes, which are just adding new compatible identifiers.
Will fix this in the next patch set.
- Why can't you simply expose it as a separate controller? Looking at the way you're changing the corresponding driver, it looks like you're simply adding an extra base/size. If you simply had a base for the corresponding GIC interrupts, you could handle as many region as you want, and have a more generic driver.
May I know the meaning of "simply expose it as a separate controller"? Or you might like to suggest me any similar driver as a reference? I will examine it. Current design is based on the fact: We expect irq-mtk-sysirq needs the optional second base but the third one will not happen. If we really need more than 2 bases, we can figure out a more generic driver at the time, right? Thanks.
Thanks, M.