[PATCH] ARM: prima2: remove L2 cache size override
21cnbao at gmail.com
Tue Apr 15 03:13:27 PDT 2014
2014-04-15 18:00 GMT+08:00 Russell King - ARM Linux <linux at arm.linux.org.uk>:
> On Tue, Apr 15, 2014 at 05:49:02PM +0800, Barry Song wrote:
>> From: Barry Song <Baohua.Song at csr.com>
>> L2 cache size has been read by l2x0_init(), it is useless to set
>> WAY_SIZE and ASSOCIATIVITY in prima2.
>> Cc: Russell King <linux at arm.linux.org.uk>
>> Signed-off-by: Barry Song <Baohua.Song at csr.com>
>> -Derived from Russell's "ARM: l2c: prima2: remove cache size override"
> You're a SMP architecture... it would be much better to initialise the
> L2 cache before the secondary CPUs are brought online.
ok, it seems we still need to hook this into the callback of this
specific machine instead of using a global early_initcall(). since now
the dt compatible field has been generic enough, it will cause other
platforms to execute l2x0_of_init() too.
> In any case, across the board, it's preferable that the L2 cache is
> enabled before the delay loop calibration as it can have an effect on
> the calibrated value.
what if the real case is that l2x0 has been enabled in bootloader?
> FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
> improving, and getting towards what was expected from it.
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