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-rw-r--r--board/adsvix/pxavoltage.S230
1 files changed, 0 insertions, 230 deletions
diff --git a/board/adsvix/pxavoltage.S b/board/adsvix/pxavoltage.S
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index 2fe1cabd7c..0000000000
--- a/board/adsvix/pxavoltage.S
+++ /dev/null
@@ -1,230 +0,0 @@
-/*
- * (C) Copyright 2004
- * Robert Whaley, Applied Data Systems, Inc. rwhaley@applieddata.net
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <asm/arch/pxa-regs.h>
-
-#define LTC1663_ADDR 0x20
-
-#define LTC1663_SY 0x01 /* Sync ACK */
-#define LTC1663_SD 0x04 /* shutdown */
-#define LTC1663_BG 0x04 /* Internal Voltage Ref */
-
-#define VOLT_1_55 18 /* DAC value for 1.55V */
-
- .global initPXAvoltage
-
-@ Set the voltage to 1.55V early in the boot process so we can run
-@ at a high clock speed and boot quickly. Note that this is necessary
-@ because the reset button does not reset the CPU voltage, so if the
-@ voltage was low (say 0.85V) then the CPU would crash without this
-@ routine
-
-@ This routine clobbers r0-r4
-
-initializei2c:
-
- ldr r2, =CKEN
- ldr r3, [r2]
- orr r3, r3, #CKEN15_PWRI2C
- str r3, [r2]
-
- ldr r2, =PCFR
- ldr r3, [r2]
- orr r3, r3, #PCFR_PI2C_EN
- str r3, [r2]
-
- /* delay for about 250msec
- */
- ldr r3, =OSCR
- mov r2, #0
- str r2, [r3]
- ldr r1, =0xC0000
-
-1:
- ldr r2, [r3]
- cmp r1, r2
- bgt 1b
- ldr r0, =PWRICR
- ldr r1, [r0]
- bic r1, r1, #(ICR_MA | ICR_START | ICR_STOP)
- str r1, [r0]
-
- orr r1, r1, #ICR_UR
- str r1, [r0]
-
- ldr r2, =PWRISR
- ldr r3, =0x7ff
- str r3, [r2]
-
- bic r1, r1, #ICR_UR
- str r1, [r0]
-
- mov r1, #(ICR_GCD | ICR_SCLE)
- str r1, [r0]
-
- orr r1, r1, #ICR_IUE
- str r1, [r0]
-
- orr r1, r1, #ICR_FM
- str r1, [r0]
-
- /* delay for about 1msec
- */
- ldr r3, =OSCR
- mov r2, #0
- str r2, [r3]
- ldr r1, =0xC00
-
-1:
- ldr r2, [r3]
- cmp r1, r2
- bgt 1b
- mov pc, lr
-
-sendbytei2c:
- ldr r3, =PWRIDBR
- str r0, [r3]
- ldr r3, =PWRICR
- ldr r0, [r3]
- orr r0, r0, r1
- bic r0, r0, r2
- str r0, [r3]
- orr r0, r0, #ICR_TB
- str r0, [r3]
-
- mov r2, #0x100000
-
-waitfortxemptyi2c:
-
- ldr r0, =PWRISR
- ldr r1, [r0]
-
- /* take it from the top if we don't get empty after a while */
- subs r2, r2, #1
- moveq lr, r4
- beq initPXAvoltage
-
- tst r1, #ISR_ITE
-
- beq waitfortxemptyi2c
-
- orr r1, r1, #ISR_ITE
- str r1, [r0]
-
- mov pc, lr
-
-initPXAvoltage:
-
- mov r4, lr
-
- bl setleds
-
- bl initializei2c
-
- bl setleds
-
- /* now send the real message to set the correct voltage */
- ldr r0, =LTC1663_ADDR
- mov r0, r0, LSL #1
- mov r1, #ICR_START
- ldr r2, =(ICR_STOP | ICR_ALDIE | ICR_ACKNAK)
- bl sendbytei2c
-
- bl setleds
-
- mov r0, #LTC1663_BG
- mov r1, #0
- mov r2, #(ICR_STOP | ICR_START)
- bl sendbytei2c
-
- bl setleds
-
- ldr r0, =VOLT_1_55
- and r0, r0, #0xff
- mov r1, #0
- mov r2, #(ICR_STOP | ICR_START)
- bl sendbytei2c
-
- bl setleds
-
- ldr r0, =VOLT_1_55
- mov r0, r0, ASR #8
- and r0, r0, #0xff
- mov r1, #ICR_STOP
- mov r2, #ICR_START
- bl sendbytei2c
-
- bl setleds
-
- @ delay a little for the volatage to stablize
- ldr r3, =OSCR
- mov r2, #0
- str r2, [r3]
- ldr r1, =0xC0
-
-1:
- ldr r2, [r3]
- cmp r1, r2
- bgt 1b
- mov pc, r4
-
-setleds:
- mov pc, lr
-
- ldr r5, =0x40e00058
- ldr r3, [r5]
- bic r3, r3, #0x3
- str r3, [r5]
- ldr r5, =0x40e0000c
- ldr r3, [r5]
- orr r3, r3, #0x00010000
- str r3, [r5]
-
- @ inner loop
- mov r0, #0x2
-1:
-
- ldr r5, =0x40e00018
- mov r3, #0x00010000
- str r3, [r5]
-
- @ outer loop
- mov r3, #0x00F00000
-2:
- subs r3, r3, #1
- bne 2b
-
- ldr r5, =0x40e00024
- mov r3, #0x00010000
- str r3, [r5]
-
- @ outer loop
- mov r3, #0x00F00000
-3:
- subs r3, r3, #1
- bne 3b
-
- subs r0, r0, #1
- bne 1b
-
- mov pc, lr