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SAME70: The nomimal frequency of the slow RC oscillator is 32KHz, not 32.768 KHz which has too much false implied accuracy

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This commit is contained in:
Gregory Nutt 2016-02-26 12:32:13 -06:00
parent c71ed665c2
commit a665f17fc8
1 changed files with 3 additions and 2 deletions
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5
configs/same70-xplained/include/board.h
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@ -58,11 +58,12 @@
* CPU clock: 120MHz
*
* There can be two on-board crystals. However, the the 32.768 crystal is not
* populated on the stock SAME70.
* populated on the stock SAME70. The fallback is to use th on-chip, slow RC
* oscillator which has a frequency of 22-42 KHz, nominally 32 KHz.
*/
#undef BOARD_HAVE_SLOWXTAL /* Slow crystal not populated */
#define BOARD_SLOWCLK_FREQUENCY (32768) /* 32.768 KHz slow crystal oscillator */
#define BOARD_SLOWCLK_FREQUENCY (32000) /* 32 KHz RC oscillator (nominal) */
#define BOARD_MAINOSC_FREQUENCY (12000000) /* 12 MHz main oscillator */
/* Main oscillator register settings.