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* [PATCH 1/1] arm64: dts: marvell: mcbin: enlarge PCI memory window
@ 2019-05-17 16:11 Heinrich Schuchardt
  2019-05-17 20:08 ` Gregory CLEMENT
  2019-05-20 15:54 ` Thomas Petazzoni
  0 siblings, 2 replies; 5+ messages in thread
From: Heinrich Schuchardt @ 2019-05-17 16:11 UTC (permalink / raw)
  To: Jason Cooper, Andrew Lunn, Gregory Clement,
	Sebastian Hesselbarth, Russell King
  Cc: Mark Rutland, devicetree, Heinrich Schuchardt, linux-kernel,
	Rob Herring, linux-arm-kernel

Running a graphics adapter on the MACCHIATObin fails due to an
insufficently 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@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 = <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


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2019-05-17 16:11 [PATCH 1/1] arm64: dts: marvell: mcbin: enlarge PCI memory window Heinrich Schuchardt
2019-05-17 20:08 ` Gregory CLEMENT
2019-05-17 20:55   ` Heinrich Schuchardt
2019-05-17 21:26     ` Gregory CLEMENT
2019-05-20 15:54 ` Thomas Petazzoni

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