From: Afzal Mohammed <afzal@ti.com>
Date: Mon, 27 May 2013 14:36:23 +0000 (+0530)
Subject: ARM: OMAP2+: AM43x: early init
X-Git-Tag: firefly_0821_release~176^2~5840^2~21^2~6
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c5107027b12181a1fc7a9b656f15300ea12d26aa;p=firefly-linux-kernel-4.4.55.git

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/am33xx.h b/arch/arm/mach-omap2/am33xx.h
index 43296c1af9ee..5eef093e6738 100644
--- a/arch/arm/mach-omap2/am33xx.h
+++ b/arch/arm/mach-omap2/am33xx.h
@@ -21,6 +21,7 @@
 #define AM33XX_SCM_BASE		0x44E10000
 #define AM33XX_CTRL_BASE	AM33XX_SCM_BASE
 #define AM33XX_PRCM_BASE	0x44E00000
+#define AM43XX_PRCM_BASE	0x44DF0000
 #define AM33XX_TAP_BASE		(AM33XX_CTRL_BASE + 0x3FC)
 
 #endif /* __ASM_ARCH_AM33XX_H */
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index d555cf2459e1..00f890e26fc9 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -96,6 +96,7 @@ void am33xx_init_early(void);
 void am35xx_init_early(void);
 void ti81xx_init_early(void);
 void am33xx_init_early(void);
+void am43xx_init_early(void);
 void omap4430_init_early(void);
 void omap5_init_early(void);
 void omap3_init_late(void);	/* Do not use this one */
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 39d559907545..f96215075b92 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -586,6 +586,19 @@ void __init am33xx_init_early(void)
 }
 #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)
 {