ARM: OMAP2+: AM43x: early init

Minimal early init - PRCM initialization not yet taken care.

Control module is similar (base address, feature register etc.) as
that of AM335x, while PRCM base address is different. Instead of
adding a new header file for AM43x, PRCM base address is added in
AM335x header file as it is similar to it to a large extent.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
[tony@atomide.com: updated to drop am33xx_check_features()]
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 39d5599..f962150 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -586,6 +586,19 @@
 }
 #endif
 
+#ifdef CONFIG_SOC_AM43XX
+void __init am43xx_init_early(void)
+{
+	omap2_set_globals_tap(AM335X_CLASS,
+			      AM33XX_L4_WK_IO_ADDRESS(AM33XX_TAP_BASE));
+	omap2_set_globals_control(AM33XX_L4_WK_IO_ADDRESS(AM33XX_CTRL_BASE),
+				  NULL);
+	omap2_set_globals_prm(AM33XX_L4_WK_IO_ADDRESS(AM43XX_PRCM_BASE));
+	omap2_set_globals_cm(AM33XX_L4_WK_IO_ADDRESS(AM43XX_PRCM_BASE), NULL);
+	omap3xxx_check_revision();
+}
+#endif
+
 #ifdef CONFIG_ARCH_OMAP4
 void __init omap4430_init_early(void)
 {