Support AT91CAP9 revC CPUs
The AT91CAP9 revC CPU has a few differences over the previous,
revB CPU which was distributed in small quantities only (revA was
an internal Atmel product only).
The revC silicon needs a special initialisation sequence to
switch from the internal (imprecise) RC oscillator to the
external 32k clock.
Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/include/asm-arm/arch-at91sam9/at91_pmc.h b/include/asm-arm/arch-at91sam9/at91_pmc.h
index 103be86..b57875d 100644
--- a/include/asm-arm/arch-at91sam9/at91_pmc.h
+++ b/include/asm-arm/arch-at91sam9/at91_pmc.h
@@ -96,4 +96,9 @@
#define AT91_PMC_PCK3RDY (1 << 11) /* Programmable Clock 3 */
#define AT91_PMC_IMR (AT91_PMC + 0x6c) /* Interrupt Mask Register */
+#define AT91_PMC_PROT (AT91_PMC + 0xe4) /* Protect Register [AT91CAP9 revC only] */
+#define AT91_PMC_PROTKEY 0x504d4301 /* Activation Code */
+
+#define AT91_PMC_VER (AT91_PMC + 0xfc) /* PMC Module Version [AT91CAP9 only] */
+
#endif
diff --git a/include/asm-arm/arch-at91sam9/at91cap9.h b/include/asm-arm/arch-at91sam9/at91cap9.h
index d1b33a0..0b52228 100644
--- a/include/asm-arm/arch-at91sam9/at91cap9.h
+++ b/include/asm-arm/arch-at91sam9/at91cap9.h
@@ -101,13 +101,25 @@
#define AT91_RTT (0xfffffd20 - AT91_BASE_SYS)
#define AT91_PIT (0xfffffd30 - AT91_BASE_SYS)
#define AT91_WDT (0xfffffd40 - AT91_BASE_SYS)
-#define AT91_GPBR (0xfffffd50 - AT91_BASE_SYS)
+#define AT91_SCKCR (0xfffffd50 - AT91_BASE_SYS)
+#define AT91_GPBR_REVB (0xfffffd50 - AT91_BASE_SYS)
+#define AT91_GPBR_REVC (0xfffffd60 - AT91_BASE_SYS)
#define AT91_USART0 AT91CAP9_BASE_US0
#define AT91_USART1 AT91CAP9_BASE_US1
#define AT91_USART2 AT91CAP9_BASE_US2
/*
+ * SCKCR flags
+ */
+#define AT91CAP9_SCKCR_RCEN (1 << 0) /* RC Oscillator Enable */
+#define AT91CAP9_SCKCR_OSC32EN (1 << 1) /* 32kHz Oscillator Enable */
+#define AT91CAP9_SCKCR_OSC32BYP (1 << 2) /* 32kHz Oscillator Bypass */
+#define AT91CAP9_SCKCR_OSCSEL (1 << 3) /* Slow Clock Selector */
+#define AT91CAP9_SCKCR_OSCSEL_RC (0 << 3)
+#define AT91CAP9_SCKCR_OSCSEL_32 (1 << 3)
+
+/*
* Internal Memory.
*/
#define AT91CAP9_SRAM_BASE 0x00100000 /* Internal SRAM base address */