summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/omap_hwmod.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod.c')
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 6ef9e6341d96..cc8a987149e2 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -300,7 +300,20 @@ static void _write_sysconfig(u32 v, struct omap_hwmod *oh)
/* Module might have lost context, always update cache and register */
oh->_sysc_cache = v;
+
+ /*
+ * Some IP blocks (such as RTC) require unlocking of IP before
+ * accessing its registers. If a function pointer is present
+ * to unlock, then call it before accessing sysconfig and
+ * call lock after writing sysconfig.
+ */
+ if (oh->class->unlock)
+ oh->class->unlock(oh);
+
omap_hwmod_write(v, oh, oh->class->sysc->sysc_offs);
+
+ if (oh->class->lock)
+ oh->class->lock(oh);
}
/**
@@ -3887,7 +3900,8 @@ void __init omap_hwmod_init(void)
soc_ops.init_clkdm = _init_clkdm;
soc_ops.update_context_lost = _omap4_update_context_lost;
soc_ops.get_context_lost = _omap4_get_context_lost;
- } else if (cpu_is_ti816x() || soc_is_am33xx() || soc_is_am43xx()) {
+ } else if (cpu_is_ti814x() || cpu_is_ti816x() || soc_is_am33xx() ||
+ soc_is_am43xx()) {
soc_ops.enable_module = _omap4_enable_module;
soc_ops.disable_module = _omap4_disable_module;
soc_ops.wait_target_ready = _omap4_wait_target_ready;