Commit c9310920 authored by Piotr Ziecik's avatar Piotr Ziecik Committed by Grant Likely
Browse files

powerpc/5200: Enable CPU_FTR_NEED_COHERENT for MPC52xx

BestComm, a DMA engine in MPC52xx SoC, requires snooping when
CPU caches are enabled to work properly.

Adding CPU_FTR_NEED_COHERENT fixes NFS problems on MPC52xx machines
introduced by 'powerpc/mm: Fix handling of _PAGE_COHERENT in BAT setup
code' (sha1: 4c456a67


Signed-off-by: default avatarPiotr Ziecik <>
Signed-off-by: default avatarGrant Likely <>
parent 5bee17f1
......@@ -241,9 +241,11 @@ extern const char *powerpc_base_platform;
/* We need to mark all pages as being coherent if we're SMP or we have a
* 74[45]x and an MPC107 host bridge. Also 83xx and PowerQUICC II
* require it for PCI "streaming/prefetch" to work properly.
* This is also required by 52xx family.
#if defined(CONFIG_SMP) || defined(CONFIG_MPC10X_BRIDGE) \
|| defined(CONFIG_PPC_83xx) || defined(CONFIG_8260)
|| defined(CONFIG_PPC_83xx) || defined(CONFIG_8260) \
|| defined(CONFIG_PPC_MPC52xx)
#define CPU_FTR_COMMON 0
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