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authorHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-12-17 16:53:07 +0100
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-12-17 16:53:07 +0100
commitcb5473205206c7f14cbb1e747f28ec75b48826e2 (patch)
tree8f4808d60917100b18a10b05230f7638a0a9bbcc /cpu/arm920t/imx
parentbaf449fc5ff96f071bb0e3789fd3265f6d4fd9a0 (diff)
parent92c78a3bbcb2ce508b4bf1c4a1e0940406a024bb (diff)
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Merge branch 'fixes' into cleanups
Conflicts: board/atmel/atngw100/atngw100.c board/atmel/atstk1000/atstk1000.c cpu/at32ap/at32ap700x/gpio.c include/asm-avr32/arch-at32ap700x/clk.h include/configs/atngw100.h include/configs/atstk1002.h include/configs/atstk1003.h include/configs/atstk1004.h include/configs/atstk1006.h include/configs/favr-32-ezkit.h include/configs/hammerhead.h include/configs/mimc200.h
Diffstat (limited to 'cpu/arm920t/imx')
-rw-r--r--cpu/arm920t/imx/interrupts.c4
-rw-r--r--cpu/arm920t/imx/serial.c56
2 files changed, 43 insertions, 17 deletions
diff --git a/cpu/arm920t/imx/interrupts.c b/cpu/arm920t/imx/interrupts.c
index 03ce06d..ddcfb34 100644
--- a/cpu/arm920t/imx/interrupts.c
+++ b/cpu/arm920t/imx/interrupts.c
@@ -60,7 +60,7 @@ void reset_timer (void)
ulong get_timer (ulong base)
{
- return get_timer_masked ();
+ return get_timer_masked() - base;
}
void set_timer (ulong t)
@@ -112,7 +112,7 @@ ulong get_tbclk (void)
{
ulong tbclk;
- tbclk = CFG_HZ;
+ tbclk = CONFIG_SYS_HZ;
return tbclk;
}
diff --git a/cpu/arm920t/imx/serial.c b/cpu/arm920t/imx/serial.c
index 6c56acb..85f1167 100644
--- a/cpu/arm920t/imx/serial.c
+++ b/cpu/arm920t/imx/serial.c
@@ -52,6 +52,8 @@ struct imx_serial {
volatile uint32_t uts;
};
+DECLARE_GLOBAL_DATA_PTR;
+
void serial_setbrg (void)
{
serial_init();
@@ -67,6 +69,9 @@ extern void imx_gpio_mode(int gpio_mode);
int serial_init (void)
{
volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
+ unsigned int ufcr_rfdiv;
+ unsigned int refclk;
+
#ifdef CONFIG_IMX_SERIAL1
imx_gpio_mode(PC11_PF_UART1_TXD);
imx_gpio_mode(PC12_PF_UART1_RXD);
@@ -95,11 +100,33 @@ int serial_init (void)
/* Configure FIFOs */
base->ufcr = 0xa81;
+ /* set the baud rate.
+ *
+ * baud * 16 x
+ * --------- = -
+ * refclk y
+ *
+ * x - 1 = UBIR
+ * y - 1 = UBMR
+ *
+ * each register is 16 bits wide. refclk max is 96 MHz
+ *
+ */
+
+ ufcr_rfdiv = ((base->ufcr) & UFCR_RFDIV) >> 7;
+ if (ufcr_rfdiv == 6)
+ ufcr_rfdiv = 7;
+ else
+ ufcr_rfdiv = 6 - ufcr_rfdiv;
+
+ refclk = get_PERCLK1();
+ refclk /= ufcr_rfdiv;
+
/* Set the numerator value minus one of the BRM ratio */
- base->ubir = (CONFIG_BAUDRATE / 100) - 1;
+ base->ubir = (gd->baudrate / 100) - 1;
/* Set the denominator value minus one of the BRM ratio */
- base->ubmr = 10000 - 1;
+ base->ubmr = (refclk/(16 * 100)) - 1;
/* Set to 8N1 */
base->ucr2 &= ~UCR2_PREN;
@@ -117,22 +144,21 @@ int serial_init (void)
/* Clear status flags */
base->usr2 |= USR2_ADET |
- USR2_DTRF |
- USR2_IDLE |
- USR2_IRINT |
- USR2_WAKE |
- USR2_RTSF |
- USR2_BRCD |
- USR2_ORE |
- USR2_RDR;
+ USR2_DTRF |
+ USR2_IDLE |
+ USR2_IRINT |
+ USR2_WAKE |
+ USR2_RTSF |
+ USR2_BRCD |
+ USR2_ORE;
/* Clear status flags */
base->usr1 |= USR1_PARITYERR |
- USR1_RTSD |
- USR1_ESCF |
- USR1_FRAMERR |
- USR1_AIRINT |
- USR1_AWAKE;
+ USR1_RTSD |
+ USR1_ESCF |
+ USR1_FRAMERR |
+ USR1_AIRINT |
+ USR1_AWAKE;
return (0);
}