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diff --git a/tcl/chip/st/spear/spear3xx.tcl b/tcl/chip/st/spear/spear3xx.tcl
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+# Generic init scripts for all ST SPEAr3xx family
+# http://www.st.com/spear
+#
+# Date:      2010-09-23
+# Author:    Antonio Borneo <borneo.antonio@gmail.com>
+
+
+# Initialize internal clock
+# Default:
+# - Crystal =  24 MHz
+# - PLL1    = 332 MHz
+# - PLL2    = 332 MHz
+# - CPU_CLK = 332 MHz
+# - DDR_CLK = 332 MHz async
+# - HCLK    = 166 MHz
+# - PCLK    =  83 MHz
+proc sp3xx_clock_default {} {
+	mww 0xfca00000 0x00000002	# set sysclk slow
+	mww 0xfca00014 0x0ffffff8	# set pll timeout to minimum (100us ?!?)
+
+	# DDRCORE disable to change frequency
+	set val [expr ([mrw 0xfca8002c] & ~0x20000000) | 0x40000000]
+	mww 0xfca8002c $val
+	mww 0xfca8002c $val # Yes, write twice!
+
+	# programming PLL1
+	mww 0xfca8000c 0xa600010c	# M=166 P=1 N=12
+	mww 0xfca80008 0x00001c0a	# power down
+	mww 0xfca80008 0x00001c0e	# enable
+	mww 0xfca80008 0x00001c06	# strobe
+	mww 0xfca80008 0x00001c0e
+	while { [expr [mrw 0xfca80008] & 0x01] == 0x00 } { sleep 1 }
+
+	# programming PLL2
+	mww 0xfca80018 0xa600010c	# M=166, P=1, N=12
+	mww 0xfca80014 0x00001c0a	# power down
+	mww 0xfca80014 0x00001c0e	# enable
+	mww 0xfca80014 0x00001c06	# strobe
+	mww 0xfca80014 0x00001c0e
+	while { [expr [mrw 0xfca80014] & 0x01] == 0x00 } { sleep 1 }
+
+	mww 0xfca80028 0x00000082	# enable plltimeen
+	mww 0xfca80024 0x00000511	# set hclkdiv="/2" & pclkdiv="/2"
+
+	mww 0xfca00000 0x00000004	# setting SYSCTL to NORMAL mode
+	while { [expr [mrw 0xfca00000] & 0x20] != 0x20 } { sleep 1 }
+
+	# Select source of DDR clock
+	#mmw 0xfca80020 0x10000000 0x70000000 ;# PLL1
+	mmw 0xfca80020 0x30000000 0x70000000 ;# PLL2
+
+	# DDRCORE enable after change frequency
+	mmw 0xfca8002c 0x20000000 0x00000000
+}
+
+proc sp3xx_common_init {} {
+	mww 0xfca8002c 0xfffffff8	# enable clock of all peripherals
+	mww 0xfca80038 0x00000000	# remove reset of all peripherals
+
+	mww 0xfca800e4 0x78000008	# COMP1V8_REG
+	mww 0xfca800ec 0x78000008	# COMP3V3_REG
+
+	mww 0xfca80050 0x00000001	# Enable clk mem port 1
+
+	mww 0xfc000000 0x10000f5f	# init SMI and set HW mode
+	mww 0xfc000000 0x00000f5f
+
+	# Initialize Bus Interconnection Matrix
+	# All ports Round-Robin and lowest priority
+	mww 0xfca8007c 0x80000007
+	mww 0xfca80080 0x80000007
+	mww 0xfca80084 0x80000007
+	mww 0xfca80088 0x80000007
+	mww 0xfca8008c 0x80000007
+	mww 0xfca80090 0x80000007
+	mww 0xfca80094 0x80000007
+	mww 0xfca80098 0x80000007
+	mww 0xfca8009c 0x80000007
+}