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Subject: Re: [PATCH 1/1] arm64: dts: marvell: mcbin: enlarge PCI memory window
To:     Gregory CLEMENT <gregory.clement@bootlin.com>,
        Jason Cooper <jason@lakedaemon.net>,
        Andrew Lunn <andrew@lunn.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Russell King <linux@armlinux.org.uk>
Cc:     Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>
References: <20190517161123.9293-1-xypron.glpk@gmx.de>
 <87k1eozvxb.fsf@FE-laptop>
From:   Heinrich Schuchardt <xypron.glpk@gmx.de>
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Message-ID: <f633e7d1-264b-8a17-7bc0-452ab38883af@gmx.de>
Date:   Fri, 17 May 2019 22:55:50 +0200
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On 5/17/19 10:08 PM, Gregory CLEMENT wrote:
> Hi Heinrich Schuchardt,
>
>> Running a graphics adapter on the MACCHIATObin fails due to an
>> insufficently sized memory window.
> I think "insufficient" is enough or I miss something.

Thanks for reviewing. Do I have to resend with corrected wording?

>
>>
>> Enlarge the memory window for the PCIe slot to 512 MiB.
>>
>> With the patch I am able to use a GT710 graphics adapter with 1 GB onbo=
ard
>> memory.
>>
>> These are the mapped memory areas that the graphics adapter is actually
>> using:
>>
>> Region 0: Memory at cc000000 (32-bit, non-prefetchable) [size=3D16M]
>> Region 1: Memory at c0000000 (64-bit, prefetchable) [size=3D128M]
>> Region 3: Memory at c8000000 (64-bit, prefetchable) [size=3D32M]
>> Region 5: I/O ports at 1000 [size=3D128]
>> Expansion ROM at ca000000 [disabled] [size=3D512K]
>
>>From my point of view this patch is correct, I don't think it is a
> problem to map more memory. So I applied on it mvebu/dt64.
>

To which repository are your referring?

Best regards

Heinrich

> But I add also Thomas in CC who know better the PCIe support on mvebu/
>
> Thanks,
>
> Gregory
>
>
>>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>> ---
>>  arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi b/arch/=
arm64/boot/dts/marvell/armada-8040-mcbin.dtsi
>> index 329f8ceeebea..205071b45a32 100644
>> --- a/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi
>> +++ b/arch/arm64/boot/dts/marvell/armada-8040-mcbin.dtsi
>> @@ -184,6 +184,8 @@
>>  	num-lanes =3D <4>;
>>  	num-viewport =3D <8>;
>>  	reset-gpios =3D <&cp0_gpio2 20 GPIO_ACTIVE_LOW>;
>> +	ranges =3D <0x81000000 0x0 0xf9010000 0x0 0xf9010000 0x0 0x10000
>> +		  0x82000000 0x0 0xc0000000 0x0 0xc0000000 0x0 0x20000000>;
>>  	status =3D "okay";
>>  };
>>
>> --
>> 2.20.1
>>
>