2 files changed, 35 insertions, 2 deletions

diff --git a/arch/arm/mach-s3c2412/dma.c b/arch/arm/mach-s3c2412/dma.c
index d0f4695c09d9..668cccefe7b0 100644
--- a/arch/arm/mach-s3c2412/dma.c
+++ b/arch/arm/mach-s3c2412/dma.c
@@ -59,8 +59,8 @@ static struct s3c24xx_dma_map __initdata s3c2412_dma_mappings[] = {
         [DMACH_SPI1] = {
                 .name           = "spi1",
                 .channels       = MAP(S3C2412_DMAREQSEL_SPI1TX),
-                .hw_addr.to     = S3C2410_PA_SPI + 0x20 + S3C2410_SPTDAT,
-                .hw_addr.from   = S3C2410_PA_SPI + 0x20 + S3C2410_SPRDAT,
+                .hw_addr.to     = S3C2410_PA_SPI + S3C2412_SPI1 + S3C2410_SPTDAT,
+                .hw_addr.from   = S3C2410_PA_SPI + S3C2412_SPI1  + S3C2410_SPRDAT,
         },
         [DMACH_UART0] = {
                 .name           = "uart0",
diff --git a/arch/arm/mach-s3c2412/s3c2412.c b/arch/arm/mach-s3c2412/s3c2412.c
index aafe0bc593f1..782b5814ced2 100644
--- a/arch/arm/mach-s3c2412/s3c2412.c
+++ b/arch/arm/mach-s3c2412/s3c2412.c
@@ -16,6 +16,7 @@
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/init.h>
+#include <linux/delay.h>
 #include <linux/sysdev.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
@@ -29,6 +30,7 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 
+#include <asm/arch/reset.h>
 #include <asm/arch/idle.h>
 
 #include <asm/arch/regs-clock.h>
@@ -37,6 +39,8 @@
 #include <asm/arch/regs-gpio.h>
 #include <asm/arch/regs-gpioj.h>
 #include <asm/arch/regs-dsc.h>
+#include <asm/arch/regs-spi.h>
+#include <asm/arch/regs-s3c2412.h>
 
 #include <asm/plat-s3c24xx/s3c2412.h>
 #include <asm/plat-s3c24xx/cpu.h>
@@ -74,6 +78,14 @@ void __init s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no)
         s3c_device_sdi.name  = "s3c2412-sdi";
         s3c_device_lcd.name  = "s3c2412-lcd";
         s3c_device_nand.name = "s3c2412-nand";
+
+        /* spi channel related changes, s3c2412/13 specific */
+        s3c_device_spi0.name = "s3c2412-spi";
+        s3c_device_spi0.resource[0].end = S3C24XX_PA_SPI + 0x24;
+        s3c_device_spi1.name = "s3c2412-spi";
+        s3c_device_spi1.resource[0].start = S3C24XX_PA_SPI + S3C2412_SPI1;
+        s3c_device_spi1.resource[0].end = S3C24XX_PA_SPI + S3C2412_SPI1 + 0x24;
+
 }
 
 /* s3c2412_idle
@@ -97,6 +109,23 @@ static void s3c2412_idle(void)
         cpu_do_idle();
 }
 
+static void s3c2412_hard_reset(void)
+{
+        /* errata "Watch-dog/Software Reset Problem" specifies that
+         * this reset must be done with the SYSCLK sourced from
+         * EXTCLK instead of FOUT to avoid a glitch in the reset
+         * mechanism.
+         *
+         * See the watchdog section of the S3C2412 manual for more
+         * information on this fix.
+         */
+
+        __raw_writel(0x00, S3C2412_CLKSRC);
+        __raw_writel(S3C2412_SWRST_RESET, S3C2412_SWRST);
+
+        mdelay(1);
+}
+
 /* s3c2412_map_io
  *
  * register the standard cpu IO areas, and any passed in from the
@@ -113,6 +142,10 @@ void __init s3c2412_map_io(struct map_desc *mach_desc, int mach_size)
 
         s3c24xx_idle = s3c2412_idle;
 
+        /* set custom reset hook */
+
+        s3c24xx_reset_hook = s3c2412_hard_reset;
+
         /* register our io-tables */
 
         iotable_init(s3c2412_iodesc, ARRAY_SIZE(s3c2412_iodesc));