linux-kernel - [PATCH] ARM: dts: bcm2711: Add pcie0 alias

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 26 Feb 2020 17:46:00 +0100
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     Rob Herring <robh+dt@...nel.org>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     phil@...pberrypi.org, devicetree@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: dts: bcm2711: Add pcie0 alias

Some bcm2711 revisions have different DMA constraints on the their PCIE
bus. The lower common denominator, being able to access the lower 3GB of
memory, is the default setting for now. Newer SoC revisions are able to
access the whole memory space.

Raspberry Pi 4's firmware is aware of this limitation and will correct
the PCIE's dma-ranges property if a pcie0 alias is available. So add
it.

Fixes: d5c8dc0d4c88 ("ARM: dts: bcm2711: Enable PCIe controller")
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
index cb3385262705..479f6828d73f 100644
--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -21,6 +21,7 @@ memory@0 {
 
 	aliases {
 		ethernet0 = &genet;
+		pcie0 = &pcie0;
 	};
 
 	leds {
-- 
2.25.1