linux-kernel - RE: [patch v2 1/2] ls1043ardb: add qe node to ls1043ardb

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Date:   Mon, 18 May 2020 03:40:27 +0000
From:   Qiang Zhao <qiang.zhao@....com>
To:     Shawn Guo <shawnguo@...nel.org>
CC:     Leo Li <leoyang.li@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [patch v2 1/2] ls1043ardb: add qe node to ls1043ardb

On Wed, Apr 29, 2020 at 04:20:51PM +0800, Shawn Guo <shawnguo@...nel.org> wrote:

> -----Original Message-----
> From: Shawn Guo <shawnguo@...nel.org>
> Sent: 2020年5月17日 22:10
> To: Qiang Zhao <qiang.zhao@....com>
> Cc: Leo Li <leoyang.li@....com>; devicetree@...r.kernel.org;
> linux-kernel@...r.kernel.org
> Subject: Re: [patch v2 1/2] ls1043ardb: add qe node to ls1043ardb
> 
> On Wed, Apr 29, 2020 at 04:20:51PM +0800, Qiang Zhao wrote:
> > From: Zhao Qiang <qiang.zhao@....com>
> >
> > Add qe node to fsl-ls1043a.dtsi and fsl-ls1043a-rdb.dts
> >
> > Signed-off-by: Zhao Qiang <qiang.zhao@....com>
> 
> Subject prefix should be like 'arm64: dts: ...'
> 
> 
> > ---
> > v2:
> > - add commit msg and drop a new blank line
> >
> >  arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts | 16 ++++++
> >  arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi    | 65
> +++++++++++++++++++++++
> >  2 files changed, 81 insertions(+)
> >
> > +			compatible = "fsl,qe", "simple-bus";
> > +			ranges = <0x0 0x0 0x2400000 0x40000>;
> > +			reg = <0x0 0x2400000 0x0 0x480>;
> > +			brg-frequency = <100000000>;
> > +			bus-frequency = <200000000>;
> > +			fsl,qe-num-riscs = <1>;
> > +			fsl,qe-num-snums = <28>;
> > +
> > +			qeic: qeic@80 {
> > +				compatible = "fsl,qe-ic";
> > +				reg = <0x80 0x80>;
> > +				#address-cells = <0>;
> > +				interrupt-controller;
> > +				#interrupt-cells = <1>;
> > +				interrupts = <0 77 0x04 0 77 0x04>;
> 
> Two identical interrupts?

Thank you for comments.

On some boards for QE, There are two different interrupts.
And On others, there is only one interrupt.
In order to make it compatible, QE interrupts used to be wrote like this.
The driver also handle the situation like this.  

Best Regards
Qiang Zhao