Re: [PATCH 4/5 v2] OMAP3630: PM: Disable L2 cache while invalidating L2 cache

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Varadarajan, Charulatha had written, on 11/30/2010 12:12 AM, the following:

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index bd426cc..e0ade5f 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -988,6 +988,9 @@ static void pm_errata_configure(void)
       if (cpu_is_omap34xx()) {
               if (cpu_is_omap3630())
                       pm34xx_errata |= RTA_ERRATUM_i608;
+               /* Enable the l2 cache toggling in sleep logic */
+               if (cpu_is_omap3630())
+                       enable_omap3630_toggle_l2_on_restore();


This can simply be like this:
...
...
-         if (cpu_is_omap3630())
+         if (cpu_is_omap3630()) {
                         pm34xx_errata |= RTA_ERRATUM_i608;
+                        /* Enable the l2 cache toggling in sleep logic */
+                       enable_omap3630_toggle_l2_on_restore();
+          }
There are two ways to arrange code there:
a) based on silicon revision enable all erratas
b) arrange it per errata case

In the original series there are additional erratas like the uart one which basically makes (a) a dirty implementation. I chose to go with (b). but personally, I am open to either and have no strong feeling abt it. mebbe others can also comment as to which way you'd like to see this organized.


--
Regards,
Nishanth Menon
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