diff options
Diffstat (limited to 'arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h')
| -rw-r--r-- | arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h b/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h index 19d80379a3e3..822f63f2f4a2 100644 --- a/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h +++ b/arch/arm/mach-ixp2000/include/mach/ixp2000-regs.h | |||
| @@ -41,13 +41,7 @@ | |||
| 41 | * Most of the registers are clumped in 4K regions spread throughout | 41 | * Most of the registers are clumped in 4K regions spread throughout |
| 42 | * the 0xc0000000 -> 0xc0100000 address range, but we just map in | 42 | * the 0xc0000000 -> 0xc0100000 address range, but we just map in |
| 43 | * the whole range using a single 1 MB section instead of small | 43 | * the whole range using a single 1 MB section instead of small |
| 44 | * 4K pages. This has two advantages for us: | 44 | * 4K pages. |
| 45 | * | ||
| 46 | * 1) We use only one TLB entry for large number of on-chip I/O devices. | ||
| 47 | * | ||
| 48 | * 2) We can easily set the Section attributes to XCB=101 on the IXP2400 | ||
| 49 | * as required per erratum #66. We accomplish this by using a | ||
| 50 | * new MT_IXP2000_DEVICE memory type with the bits set as required. | ||
| 51 | * | 45 | * |
| 52 | * CAP stands for CSR Access Proxy. | 46 | * CAP stands for CSR Access Proxy. |
| 53 | * | 47 | * |