Author: ian
Date: Sat Apr 26 20:27:58 2014
New Revision: 264985
URL: http://svnweb.freebsd.org/changeset/base/264985
Log:
Reword a comment block a bit; no functional changes.
Modified:
head/sys/dev/uart/uart_dev_imx.c
Modified: head/sys/dev/uart/uart_dev_imx.c
==============================================================================
--- head/sys/dev/uart/uart_dev_imx.c Sat Apr 26 20:27:54 2014
(r264984)
+++ head/sys/dev/uart/uart_dev_imx.c Sat Apr 26 20:27:58 2014
(r264985)
@@ -131,13 +131,14 @@ imx_uart_init(struct uart_bas *bas, int
/*
* The hardware has an extremely flexible baud clock: it allows setting
* both the numerator and denominator of the divider, as well as a
- * separate pre-divider. We simplify that problem by assuming a
- * pre-divider and numerator of one because our base clock is so fast we
- * can reach virtually any reasonable speed with a simple divisor. The
- * numerator value actually includes the 16x over-sampling; the register
- * value is the numerator-1, so we have a hard-coded 15. Note that a
- * quirk of the hardware requires that both UBIR and UBMR be set back to
- * back in order for the change to take effect.
+ * separate pre-divider. We simplify the problem of coming up with a
+ * workable pair of numbers by assuming a pre-divider and numerator of
+ * one because our base clock is so fast we can reach virtually any
+ * reasonable speed with a simple divisor. The numerator value actually
+ * includes the 16x over-sampling (so a value of 16 means divide by 1);
+ * the register value is the numerator-1, so we have a hard-coded 15.
+ * Note that a quirk of the hardware requires that both UBIR and UBMR be
+ * set back to back in order for the change to take effect.
*/
if (baudrate > 0) {
baseclk = imx_ccm_uart_hz();
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