From 19883aede2ac0a522493bfb2b35a7dbb200071b1 Mon Sep 17 00:00:00 2001 From: Stelian Pop Date: Thu, 8 May 2008 14:52:34 +0200 Subject: 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 Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- include/asm-arm/arch-at91sam9/at91_pmc.h | 5 +++++ include/asm-arm/arch-at91sam9/at91cap9.h | 14 +++++++++++++- 2 files changed, 18 insertions(+), 1 deletion(-) (limited to 'include/asm-arm') diff --git a/include/asm-arm/arch-at91sam9/at91_pmc.h b/include/asm-arm/arch-at91sam9/at91_pmc.h index 103be86999..b57875d798 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 d1b33a069a..0b52228138 100644 --- a/include/asm-arm/arch-at91sam9/at91cap9.h +++ b/include/asm-arm/arch-at91sam9/at91cap9.h @@ -101,12 +101,24 @@ #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. */ -- cgit v1.2.1