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Diffstat (limited to 'cpu/mpc8260/commproc.c')
-rw-r--r--cpu/mpc8260/commproc.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/cpu/mpc8260/commproc.c b/cpu/mpc8260/commproc.c
index c523ee4..72cceb3 100644
--- a/cpu/mpc8260/commproc.c
+++ b/cpu/mpc8260/commproc.c
@@ -111,9 +111,9 @@ m8260_cpm_hostalloc(uint size, uint align)
* to port numbers). Documentation uses 1-based numbering.
*/
#define BRG_INT_CLK gd->brg_clk
-#define BRG_UART_CLK ((BRG_INT_CLK + 15) / 16)
+#define BRG_UART_CLK (BRG_INT_CLK / 16)
-/* This function is used by UARTS, or anything else that uses a 16x
+/* This function is used by UARTs, or anything else that uses a 16x
* oversampled clock.
*/
void
@@ -123,9 +123,10 @@ m8260_cpm_setbrg(uint brg, uint rate)
volatile immap_t *immr = (immap_t *)CFG_IMMR;
volatile uint *bp;
+ uint cd = BRG_UART_CLK / rate;
- /* This is good enough to get SMCs running.....
- */
+ if ((BRG_UART_CLK % rate) < (rate / 2))
+ cd--;
if (brg < 4) {
bp = (uint *)&immr->im_brgc1;
}
@@ -134,7 +135,7 @@ m8260_cpm_setbrg(uint brg, uint rate)
brg -= 4;
}
bp += brg;
- *bp = (((((BRG_UART_CLK+rate-1)/rate)-1)&0xfff)<<1)|CPM_BRG_EN;
+ *bp = (cd << 1) | CPM_BRG_EN;
}
/* This function is used to set high speed synchronous baud rate