Commit 233cbe5b authored by Rajendra Nayak's avatar Rajendra Nayak Committed by Paul Walmsley
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OMAP2+: hwmod: Update the sysc_cache in case module context is lost

Do not skip the sysc programming in the hmwod framework based
on the cached value alone, since at times the module might have lost
context (due to the Powerdomain in which the module belongs
transitions to either Open Switch RET or OFF).

Identifying if a module has lost context requires atleast one
register read, and since a register read has more latency than
a write, it makes sense to do a blind write always.
Signed-off-by: default avatarRajendra Nayak <>
Acked-by: default avatarKevin Hilman <>
Signed-off-by: default avatarPaul Walmsley <>
Cc: Benoit Cousson <>
Cc: Santosh Shilimkar <>
parent b56b7bc8
......@@ -210,10 +210,9 @@ static void _write_sysconfig(u32 v, struct omap_hwmod *oh)
/* XXX ensure module interface clock is up */
if (oh->_sysc_cache != v) {
oh->_sysc_cache = v;
omap_hwmod_write(v, oh, oh->class->sysc->sysc_offs);
/* Module might have lost context, always update cache and register */
oh->_sysc_cache = v;
omap_hwmod_write(v, oh, oh->class->sysc->sysc_offs);
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