linux-kernel - RE: [PATCH 4/5] arm: dts: ls1021a: fix flextimer failed to wake system

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Date:   Mon, 21 Sep 2020 23:01:25 +0000
From:   Leo Li <leoyang.li@....com>
To:     Ran Wang <ran.wang_1@....com>, Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>
CC:     "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Ran Wang <ran.wang_1@....com>
Subject: RE: [PATCH 4/5] arm: dts: ls1021a: fix flextimer failed to wake
 system



> -----Original Message-----
> From: Ran Wang <ran.wang_1@....com>
> Sent: Wednesday, September 16, 2020 3:19 AM
> To: Leo Li <leoyang.li@....com>; Rob Herring <robh+dt@...nel.org>;
> Shawn Guo <shawnguo@...nel.org>
> Cc: linuxppc-dev@...ts.ozlabs.org; linux-arm-kernel@...ts.infradead.org;
> devicetree@...r.kernel.org; linux-kernel@...r.kernel.org; Ran Wang
> <ran.wang_1@....com>
> Subject: [PATCH 4/5] arm: dts: ls1021a: fix flextimer failed to wake system
> 
> The data of property 'fsl,rcpm-wakeup' is not corrcet, which causing RCPM
> driver incorrectly program register IPPDEXPCR1, then flextimer is wrongly
> clock gated during system suspend, can't send interrupt to wake.
> 
> Signed-off-by: Ran Wang <ran.wang_1@....com>

Acked-by: Li Yang <leoyang.li@....com>

> ---
>  arch/arm/boot/dts/ls1021a.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/ls1021a.dtsi b/arch/arm/boot/dts/ls1021a.dtsi
> index 089fe86..e372630f 100644
> --- a/arch/arm/boot/dts/ls1021a.dtsi
> +++ b/arch/arm/boot/dts/ls1021a.dtsi
> @@ -1014,7 +1014,7 @@
>  			compatible = "fsl,ls1021a-ftm-alarm";
>  			reg = <0x0 0x29d0000 0x0 0x10000>;
>  			reg-names = "ftm";
> -			fsl,rcpm-wakeup = <&rcpm 0x20000 0x0>;
> +			fsl,rcpm-wakeup = <&rcpm 0x0 0x20000000>;
>  			interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
>  			big-endian;
>  		};
> --
> 2.7.4