On Friday 11 April 2014 04:55 PM, Russell King - ARM Linux wrote: > On Fri, Apr 11, 2014 at 11:03:57AM +0530, Sekhar Nori wrote: >> Here is a revised patch which is just an extension of your patch >> with L2C-220 case handled. I dont really have L2C-220 hardware so even >> if you want to handle that at a later time, it would be perfectly okay >> with me. > > This is what I came up with, which of course is very similar to yours. > I think the only difference is that I'm allowing the state of the NS > access bits to be preserved by the OMAP code, getting OMAP closer to > the target of a ~0 mask. The only bits which are clear in the mask > passed into the L2 code by OMAP now are: > > - L310_AUX_CTRL_INSTR_PREFETCH > - L310_AUX_CTRL_DATA_PREFETCH > - L310_AUX_CTRL_CACHE_REPLACE_RR > - L2C_AUX_CTRL_SHARED_OVERRIDE > - L2C_AUX_CTRL_PARITY_ENABLE > > It sounds like we can kill L310_AUX_CTRL_CACHE_REPLACE_RR as well since > that's already set for us (and fwir is the power-on-reset default too.) > > arch/arm/mach-omap2/omap4-common.c | 4 +--- > arch/arm/mm/cache-l2x0.c | 23 +++++++++++++++++++++-- > 2 files changed, 22 insertions(+), 5 deletions(-) > > diff --git a/arch/arm/mach-omap2/omap4-common.c > b/arch/arm/mach-omap2/omap4-common.c > index c0f9a81a2d32..3b01c5223b11 100644 > --- a/arch/arm/mach-omap2/omap4-common.c > +++ b/arch/arm/mach-omap2/omap4-common.c > @@ -213,8 +213,6 @@ static int __init omap_l2_cache_init(void) > > /* 16-way associativity, parity disabled, way size - 64KB (es2.0 +) */ > aux_ctrl = L310_AUX_CTRL_CACHE_REPLACE_RR | > - L310_AUX_CTRL_NS_LOCKDOWN | > - L310_AUX_CTRL_NS_INT_CTRL | > L2C_AUX_CTRL_SHARED_OVERRIDE | > L310_AUX_CTRL_DATA_PREFETCH | > L310_AUX_CTRL_INSTR_PREFETCH; > @@ -223,7 +221,7 @@ static int __init omap_l2_cache_init(void) > if (of_have_populated_dt()) > l2x0_of_init(aux_ctrl, 0xc19fffff);
Just noticed that the mask here too should have been changed to 0xcd9fffff. I will be making this change to the local version I am committing to base my AM43x support series on. > else > - l2x0_init(l2cache_base, aux_ctrl, 0xc19fffff); > + l2x0_init(l2cache_base, aux_ctrl, 0xcd9fffff); Thanks, Sekhar -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
