tree c0bacadae9b24950f18968d7cc646524e6e7c9e3
parent 92e963f50fc74041b5e9e744c330dca48e04f08d
author Jisheng Zhang <jszhang@marvell.com> 1452147158 +0800
committer Bjorn Helgaas <bhelgaas@google.com> 1455043131 -0600

PCI: designware: Explain why we don't program ATU for some platforms

Some platforms don't support ATU, e.g., pci-keystone.c.  These platforms
use their own address translation component rather than ATU, and they
provide the rd_other_conf and wr_other_conf methods to program the
translation component and perform the access.

Add a comment to explain why we don't program the ATU for these platforms.

[bhelgaas: changelog]
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>