Re: RPi4 can't deal with 64 bit PCI accesses
From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
Date: 2021-02-22 17:57:12
Also in:
linux-arm-kernel, linux-pci
On Mon, Feb 22, 2021 at 04:47:22PM +0100, Nicolas Saenz Julienne wrote:
[2] Things might get even weirder as the order in which the 32bit operations
are performed might matter (low/high vs high/low).Note that arm32 does not provide writeq() very purposely because it is device specific whether writing high-then-low or low-then-high is the correct approach. See linux/io-64-nonatomic-*.h -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!