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authorwdenk <wdenk>2003-07-14 22:13:32 +0000
committerwdenk <wdenk>2003-07-14 22:13:32 +0000
commit8564acf936726c5568d71e4fa93a0ae9814e0d07 (patch)
tree05fa981555adf1d333970f3d52d0683008fe3cfb /cpu/mpc8260/commproc.c
parent5702923e23238df6c6f62d53f73863462ae62f4e (diff)
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* Patches by Yuli Barcohen, 13 Jul 2003:
- Correct flash and JFFS2 support for MPC8260ADS - fix PVR values and clock generation for PowerQUICC II family (8270/8275/8280) * Patch by Bernhard Kuhn, 08 Jul 2003: - add support for M68K targets * Patch by Ken Chou, 3 Jul: - Fix PCI config table for A3000 - Fix iobase for natsemi.c (PCI_BASE_ADDRESS_0 is the IO base register for DP83815) * Allow to enable "slow" POST routines by key press on power-on * Fix temperature dependend switching of LCD backlight on LWMON * Tweak output format for LWMON
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