From: Michael Walle <michael@walle.cc>
To: Shawn Guo <shawnguo@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, Li Yang <leoyang.li@nxp.com>,
Rob Herring <robh+dt@kernel.org>,
Vladimir Oltean <vladimir.oltean@nxp.com>
Subject: Re: [PATCH] arm64: dts: ls1028a: add interrupt to Root Complex Event Collector
Date: Thu, 04 Mar 2021 12:59:09 +0100 [thread overview]
Message-ID: <4d45ac1495eea68aca7d2b85063c2559@walle.cc> (raw)
In-Reply-To: <20210304113659.GQ15865@dragon>
Am 2021-03-04 12:37, schrieb Shawn Guo:
> On Tue, Feb 09, 2021 at 01:52:59AM +0100, Michael Walle wrote:
>> The legacy interrupt INT_A is hardwired to the event collector. RCEC
>> is
>> bascially supported starting with v5.11. Having a correct interrupt,
>> will
>> make RCEC at least probe correctly.
>>
>> There are still issues with how RCEC is implemented in the RCiEP on
>> the
>> LS1028A. RCEC will report an error, but it cannot find the correct
>> subdevice.
>>
>> Signed-off-by: Michael Walle <michael@walle.cc>
>> ---
>> arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>> b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>> index 262fbad8f0ec..c1f2f402ad53 100644
>> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
>> @@ -1114,6 +1114,12 @@
>> full-duplex;
>> };
>> };
>> +
>> + rcec@1f,0 {
>
> Just curious how unit-address comes to '1f,0'?
You mean that it's pci dev 1f func 0?
0x00f800 >> 11 == 0x1f
See also:
https://elixir.bootlin.com/linux/v5.12-rc1/source/scripts/dtc/checks.c#L916
-michael
>
> Shawn
>
>> + reg = <0x00f800 0 0 0 0>;
>> + /* IEP INT_A */
>> + interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
>> + };
>> };
>>
>> rcpm: power-controller@1e34040 {
>> --
>> 2.20.1
>>
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next prev parent reply other threads:[~2021-03-04 12:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-09 0:52 [PATCH] arm64: dts: ls1028a: add interrupt to Root Complex Event Collector Michael Walle
2021-02-10 15:40 ` Vladimir Oltean
2021-03-03 20:47 ` Michael Walle
2021-03-04 11:37 ` Shawn Guo
2021-03-04 11:59 ` Michael Walle [this message]
2021-03-05 0:35 ` Shawn Guo
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