ARM: OMAP2+: Initialize SoC PM later

There's no need to probe devices until at module_init time and we
currently have at least PM trying to use I2C for PMICs early on.

As only a part of the SoC init_early is SoC specific, we only need to call
the SoC specific PM init function. And we can modify omap2_common_pm_late_init()
so it becomes a late_initcall().

Note that this changes am335x to call omap2_clk_enable_autoidle_all() that
seems to be missing currently.

Cc: Keerthy <j-keerthy@ti.com>
Cc: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index b98c46d7f112..ca03af8fe43f 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -230,8 +230,20 @@ static void __init omap4_init_voltages(void)
         omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
 }
 
+int __maybe_unused omap_pm_nop_init(void)
+{
+        return 0;
+}
+
+int (*omap_pm_soc_init)(void);
+
 int __init omap2_common_pm_late_init(void)
 {
+        int error;
+
+        if (!omap_pm_soc_init)
+                return 0;
+
         /* Init the voltage layer */
         omap3_twl_init();
         omap4_twl_init();
@@ -244,5 +256,12 @@ int __init omap2_common_pm_late_init(void)
         /* Smartreflex device init */
         omap_devinit_smartreflex();
 
+        error = omap_pm_soc_init();
+        if (error)
+                pr_warn("%s: pm soc init failed: %i\n", __func__, error);
+
+        omap2_clk_enable_autoidle_all();
+
         return 0;
 }
+omap_late_initcall(omap2_common_pm_late_init);