linux-kernel - [PATCH AUTOSEL 5.2 09/85] arm64: dts: marvell: mcbin: enlarge PCI memory window

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Message-Id: <20190726133936.11177-9-sashal@kernel.org>
Date:   Fri, 26 Jul 2019 09:38:19 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Heinrich Schuchardt <xypron.glpk@....de>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        Sasha Levin <sashal@...nel.org>, devicetree@...r.kernel.org
Subject: [PATCH AUTOSEL 5.2 09/85] arm64: dts: marvell: mcbin: enlarge PCI memory window

From: Heinrich Schuchardt <xypron.glpk@....de>

[ Upstream commit d3446b266a8c72a7bbc94b65f5fc6d206be77d24 ]

Running a graphics adapter on the MACCHIATObin fails due to an
insufficiently sized memory window.

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 onboard
memory.

These are the mapped memory areas that the graphics adapter is actually
using:

Region 0: Memory at cc000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at c0000000 (64-bit, prefetchable) [size=128M]
Region 3: Memory at c8000000 (64-bit, prefetchable) [size=32M]
Region 5: I/O ports at 1000 [size=128]
Expansion ROM at ca000000 [disabled] [size=512K]

Signed-off-by: Heinrich Schuchardt <xypron.glpk@....de>
Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 = <4>;
 	num-viewport = <8>;
 	reset-gpios = <&cp0_gpio2 20 GPIO_ACTIVE_LOW>;
+	ranges = <0x81000000 0x0 0xf9010000 0x0 0xf9010000 0x0 0x10000
+		  0x82000000 0x0 0xc0000000 0x0 0xc0000000 0x0 0x20000000>;
 	status = "okay";
 };
 
-- 
2.20.1