arm: omap2: timer: limit hwmod usage to non-DT boots

now that we have a working 32k clocksource driver,
we can limit HWMOD usage to non-DT boots and rely
on clocksource_of_init() every time we boot
with DT.

While at that, also make sure that we don't disable
the 32-counter device so it gets probed by its driver.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index d024b2b..05c17eb 100644 (file)
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -183,7 +183,8 @@ static struct device_node * __init omap_get_timer_dt(const struct of_device_id *
                                  of_get_property(np, "ti,timer-secure", NULL)))
                        continue;
 
-               of_add_property(np, &device_disabled);
+               if (!of_device_is_compatible(np, "ti,omap-counter32k"))
+                       of_add_property(np, &device_disabled);
                return np;
        }
 
@@ -394,7 +395,6 @@ static int __init __maybe_unused omap2_sync32k_clocksource_init(void)
        int ret;
        struct device_node *np = NULL;
        struct omap_hwmod *oh;
-       void __iomem *vbase;
        const char *oh_name = "counter_32k";
 
        /*
@@ -420,18 +420,6 @@ static int __init __maybe_unused omap2_sync32k_clocksource_init(void)
 
        omap_hwmod_setup_one(oh_name);
 
-       if (np) {
-               vbase = of_iomap(np, 0);
-               of_node_put(np);
-       } else {
-               vbase = omap_hwmod_get_mpu_rt_va(oh);
-       }
-
-       if (!vbase) {
-               pr_warn("%s: failed to get counter_32k resource\n", __func__);
-               return -ENXIO;
-       }
-
        ret = omap_hwmod_enable(oh);
        if (ret) {
                pr_warn("%s: failed to enable counter_32k module (%d)\n",
@@ -439,13 +427,18 @@ static int __init __maybe_unused omap2_sync32k_clocksource_init(void)
                return ret;
        }
 
-       ret = omap_init_clocksource_32k(vbase);
-       if (ret) {
-               pr_warn("%s: failed to initialize counter_32k as a clocksource (%d)\n",
-                                                       __func__, ret);
-               omap_hwmod_idle(oh);
-       }
+       if (!of_have_populated_dt()) {
+               void __iomem *vbase;
 
+               vbase = omap_hwmod_get_mpu_rt_va(oh);
+
+               ret = omap_init_clocksource_32k(vbase);
+               if (ret) {
+                       pr_warn("%s: failed to initialize counter_32k as a clocksource (%d)\n",
+                                       __func__, ret);
+                       omap_hwmod_idle(oh);
+               }
+       }
        return ret;
 }