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SAMA5 ADC/Touchscreen: A little more logic

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This commit is contained in:
Gregory Nutt 2013-10-01 14:40:34 -06:00
parent 750ba3238b
commit fca0fdb7b2
2 changed files with 30 additions and 0 deletions
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14
configs/sama5d3x-ek/include/board_384mhz.h
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@ -143,12 +143,26 @@
# endif
#endif
/* ADC Configuration
*
* ADCClock = MCK / ((PRESCAL+1) * 2)
*
* Given:
* MCK = 128MHz
* ADCClock = 8MHz
* Then:
* PRESCAL = 7
*/
#define BOARD_ADC_PRESCAL (7)
/* Resulting frequencies */
#define BOARD_MAINOSC_FREQUENCY (12000000) /* MAINOSC: 12MHz crystal on-board */
#define BOARD_PLLA_FREQUENCY (768000000) /* PLLACK: 64 * 12Mhz / 1 */
#define BOARD_PCK_FREQUENCY (384000000) /* CPU: PLLACK / 2 / 1 */
#define BOARD_MCK_FREQUENCY (128000000) /* MCK: PLLACK / 2 / 1 / 3 */
#define BOARD_ADCCLK_FREQUENCY (8000000) /* ADCCLK: MCK / ((7+1)*2) */
/* HSMCI clocking
*

16
configs/sama5d3x-ek/include/board_396mhz.h
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@ -99,12 +99,28 @@
#define BOARD_PMC_MCKR_PLLADIV PMC_MCKR_PLLADIV2
#define BOARD_PMC_MCKR_MDIV PMC_MCKR_MDIV_PCKDIV3
/* ADC Configuration
*
* ADCClock = MCK / ((PRESCAL+1) * 2)
*
* Given:
* MCK = 132MHz
* ADCClock = 8MHz
* Then:
* PRESCAL = 7.25
*
* PRESCAL=7 and MCK=132MHz yields ADC clock of 8.25MHz
*/
#define BOARD_ADC_PRESCAL (7)
/* Resulting frequencies */
#define BOARD_MAINOSC_FREQUENCY (12000000) /* MAINOSC: 12MHz crystal on-board */
#define BOARD_PLLA_FREQUENCY (792000000) /* PLLACK: 66 * 12Mhz / 1 */
#define BOARD_PCK_FREQUENCY (396000000) /* CPU: PLLACK / 2 / 1 */
#define BOARD_MCK_FREQUENCY (132000000) /* MCK: PLLACK / 2 / 1 / 3 */
#define BOARD_ADCCLK_FREQUENCY (8250000) /* ADCCLK: MCK / ((7+1)*2) */
#if defined(CONFIG_SAMA5_EHCI) || defined(CONFIG_SAMA5_OHCI) || \
defined(CONFIG_SAMA5_UDPHS)