2021-08-21 08:54:34 +00:00
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From f78a15dcaf63a5ad478670fd1d52d85261e88f37 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 26 Oct 2020 10:35:43 +0000
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Subject: [PATCH] ARM: dts: Expand PCIe space on BCM2711
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Attempts to connect external GPUs to Compute Module 4's PCIe bus have
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highlighted that the existing "outbound window" - the fraction of the
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PCI address base that is appears in the host's memory map - is
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restrictively small. Expand the window to a full 1GB.
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See: https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=288902
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/bcm2711.dtsi | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/arch/arm/boot/dts/bcm2711.dtsi
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+++ b/arch/arm/boot/dts/bcm2711.dtsi
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2021-12-01 11:28:02 +00:00
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@@ -509,8 +509,8 @@
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2021-08-21 08:54:34 +00:00
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msi-controller;
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msi-parent = <&pcie0>;
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- ranges = <0x02000000 0x0 0xf8000000 0x6 0x00000000
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- 0x0 0x04000000>;
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+ ranges = <0x02000000 0x0 0xc0000000 0x6 0x00000000
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+ 0x0 0x40000000>;
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/*
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* The wrapper around the PCIe block has a bug
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* preventing it from accessing beyond the first 3GB of
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