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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-03-19 18:53:54 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-05-30 03:49:57 +0400 |
| commit | 39b53458cc635f103365ef09e9db6980fa01e3fb (patch) | |
| tree | b1a95af72dd28f79e1b16c94fe624c0b2217c8e9 /arch/arm/mach-realview/realview_eb.c | |
| parent | 918197be3992801054ff02fc8183bf9429bab98b (diff) | |
| download | linux-39b53458cc635f103365ef09e9db6980fa01e3fb.tar.xz | |
ARM: l2c: realview: improve commentry about the L2 cache requirements
Add better commentry about the L2 cache requirements on these platforms.
Unfortunately, the auxiliary control register is not pre-set to indicate
the correct cache parameters, so we have to manually program these.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-realview/realview_eb.c')
| -rw-r--r-- | arch/arm/mach-realview/realview_eb.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c index c85ddb2a0ad0..b575895037b8 100644 --- a/arch/arm/mach-realview/realview_eb.c +++ b/arch/arm/mach-realview/realview_eb.c @@ -442,8 +442,13 @@ static void __init realview_eb_init(void) realview_eb11mp_fixup(); #ifdef CONFIG_CACHE_L2X0 - /* 1MB (128KB/way), 8-way associativity, evmon/parity/share enabled - * Bits: .... ...0 0111 1001 0000 .... .... .... */ + /* + * The PL220 needs to be manually configured as the hardware + * doesn't report the correct sizes. + * 1MB (128KB/way), 8-way associativity, event monitor and + * parity enabled, ignore share bit, no force write allocate + * Bits: .... ...0 0111 1001 0000 .... .... .... + */ l2x0_init(__io_address(REALVIEW_EB11MP_L220_BASE), 0x00790000, 0xfe000fff); #endif platform_device_register(&pmu_device); |