7 files changed, 49 insertions, 8 deletions

diff --git a/arch/arm/mach-at91/at91cap9.c b/arch/arm/mach-at91/at91cap9.c
index 0fc0adaebd58..0a38c69fdbc4 100644
--- a/arch/arm/mach-at91/at91cap9.c
+++ b/arch/arm/mach-at91/at91cap9.c
@@ -17,6 +17,8 @@
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
+
+#include <mach/cpu.h>
 #include <mach/at91cap9.h>
 #include <mach/at91_pmc.h>
 #include <mach/at91_rstc.h>
@@ -317,6 +319,12 @@ void __init at91cap9_initialize(unsigned long main_clock)
 
         /* Register GPIO subsystem */
         at91_gpio_init(at91cap9_gpio, 4);
+
+        /* Remember the silicon revision */
+        if (cpu_is_at91cap9_revB())
+                system_rev = 0xB;
+        else if (cpu_is_at91cap9_revC())
+                system_rev = 0xC;
 }
 
 /* --------------------------------------------------------------------
diff --git a/arch/arm/mach-at91/at91cap9_devices.c b/arch/arm/mach-at91/at91cap9_devices.c
index 3a36182c50cc..9eca2209cde6 100644
--- a/arch/arm/mach-at91/at91cap9_devices.c
+++ b/arch/arm/mach-at91/at91cap9_devices.c
@@ -13,6 +13,7 @@
  */
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
+#include <asm/mach/irq.h>
 
 #include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
@@ -21,6 +22,7 @@
 #include <video/atmel_lcdc.h>
 
 #include <mach/board.h>
+#include <mach/cpu.h>
 #include <mach/gpio.h>
 #include <mach/at91cap9.h>
 #include <mach/at91cap9_matrix.h>
@@ -69,6 +71,9 @@ void __init at91_add_device_usbh(struct at91_usbh_data *data)
         if (!data)
                 return;
 
+        if (cpu_is_at91cap9_revB())
+                set_irq_type(AT91CAP9_ID_UHP, IRQ_TYPE_LEVEL_HIGH);
+
         /* Enable VBus control for UHP ports */
         for (i = 0; i < data->ports; i++) {
                 if (data->vbus_pin[i])
@@ -151,8 +156,13 @@ static struct platform_device at91_usba_udc_device = {
 
 void __init at91_add_device_usba(struct usba_platform_data *data)
 {
-        at91_sys_write(AT91_MATRIX_UDPHS, AT91_MATRIX_SELECT_UDPHS |
-                                          AT91_MATRIX_UDPHS_BYPASS_LOCK);
+        if (cpu_is_at91cap9_revB()) {
+                set_irq_type(AT91CAP9_ID_UDPHS, IRQ_TYPE_LEVEL_HIGH);
+                at91_sys_write(AT91_MATRIX_UDPHS, AT91_MATRIX_SELECT_UDPHS |
+                                                  AT91_MATRIX_UDPHS_BYPASS_LOCK);
+        }
+        else
+                at91_sys_write(AT91_MATRIX_UDPHS, AT91_MATRIX_SELECT_UDPHS);
 
         /*
          * Invalid pins are 0 on AT91, but the usba driver is shared
@@ -850,6 +860,9 @@ void __init at91_add_device_lcdc(struct atmel_lcdfb_info *data)
         if (!data)
                 return;
 
+        if (cpu_is_at91cap9_revB())
+                set_irq_type(AT91CAP9_ID_LCDC, IRQ_TYPE_LEVEL_HIGH);
+
         at91_set_A_periph(AT91_PIN_PC1, 0);     /* LCDHSYNC */
         at91_set_A_periph(AT91_PIN_PC2, 0);     /* LCDDOTCK */
         at91_set_A_periph(AT91_PIN_PC3, 0);     /* LCDDEN */
diff --git a/arch/arm/mach-at91/board-cap9adk.c b/arch/arm/mach-at91/board-cap9adk.c
index 43b37bc91e5f..83a1a0fef47b 100644
--- a/arch/arm/mach-at91/board-cap9adk.c
+++ b/arch/arm/mach-at91/board-cap9adk.c
@@ -36,11 +36,9 @@
 #include <mach/hardware.h>
 #include <asm/setup.h>
 #include <asm/mach-types.h>
-#include <asm/irq.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
-#include <asm/mach/irq.h>
 
 #include <mach/board.h>
 #include <mach/gpio.h>
@@ -376,10 +374,8 @@ static void __init cap9adk_board_init(void)
         /* Serial */
         at91_add_device_serial();
         /* USB Host */
-        set_irq_type(AT91CAP9_ID_UHP, IRQ_TYPE_LEVEL_HIGH);
         at91_add_device_usbh(&cap9adk_usbh_data);
         /* USB HS */
-        set_irq_type(AT91CAP9_ID_UDPHS, IRQ_TYPE_LEVEL_HIGH);
         at91_add_device_usba(&cap9adk_usba_udc_data);
         /* SPI */
         at91_add_device_spi(cap9adk_spi_devices, ARRAY_SIZE(cap9adk_spi_devices));
@@ -396,7 +392,6 @@ static void __init cap9adk_board_init(void)
         /* I2C */
         at91_add_device_i2c(NULL, 0);
         /* LCD Controller */
-        set_irq_type(AT91CAP9_ID_LCDC, IRQ_TYPE_LEVEL_HIGH);
         at91_add_device_lcdc(&cap9adk_lcdc_data);
         /* AC97 */
         at91_add_device_ac97(&cap9adk_ac97_data);
diff --git a/arch/arm/mach-at91/include/mach/at91_pmc.h b/arch/arm/mach-at91/include/mach/at91_pmc.h
index 2e3f2894b704..9561e33b8a9a 100644
--- a/arch/arm/mach-at91/include/mach/at91_pmc.h
+++ b/arch/arm/mach-at91/include/mach/at91_pmc.h
@@ -23,6 +23,7 @@
 #define         AT91_PMC_PCK            (1 <<  0)               /* Processor Clock */
 #define         AT91RM9200_PMC_UDP      (1 <<  1)               /* USB Devcice Port Clock [AT91RM9200 only] */
 #define         AT91RM9200_PMC_MCKUDP   (1 <<  2)               /* USB Device Port Master Clock Automatic Disable on Suspend [AT91RM9200 only] */
+#define         AT91CAP9_PMC_DDR        (1 <<  2)               /* DDR Clock [AT91CAP9 revC only] */
 #define         AT91RM9200_PMC_UHP      (1 <<  4)               /* USB Host Port Clock [AT91RM9200 only] */
 #define         AT91SAM926x_PMC_UHP     (1 <<  6)               /* USB Host Port Clock [AT91SAM926x only] */
 #define         AT91CAP9_PMC_UHP        (1 <<  6)               /* USB Host Port Clock [AT91CAP9 only] */
@@ -102,10 +103,16 @@
 #define         AT91_PMC_LOCKB          (1 <<  2)               /* PLLB Lock */
 #define         AT91_PMC_MCKRDY         (1 <<  3)               /* Master Clock */
 #define         AT91_PMC_LOCKU          (1 <<  6)               /* UPLL Lock [AT91CAP9 only] */
+#define         AT91_PMC_OSCSEL         (1 <<  7)               /* Slow Clock Oscillator [AT91CAP9 revC only] */
 #define         AT91_PMC_PCK0RDY        (1 <<  8)               /* Programmable Clock 0 */
 #define         AT91_PMC_PCK1RDY        (1 <<  9)               /* Programmable Clock 1 */
 #define         AT91_PMC_PCK2RDY        (1 << 10)               /* Programmable Clock 2 */
 #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/arch/arm/mach-at91/include/mach/at91cap9.h b/arch/arm/mach-at91/include/mach/at91cap9.h
index 4a4b64135a92..d8c1ededaa75 100644
--- a/arch/arm/mach-at91/include/mach/at91cap9.h
+++ b/arch/arm/mach-at91/include/mach/at91cap9.h
@@ -101,7 +101,9 @@
 #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_GPBR       (cpu_is_at91cap9_revB() ?       \
+                        (0xfffffd50 - AT91_BASE_SYS) :  \
+                        (0xfffffd60 - AT91_BASE_SYS))
 
 #define AT91_USART0     AT91CAP9_BASE_US0
 #define AT91_USART1     AT91CAP9_BASE_US1
diff --git a/arch/arm/mach-at91/include/mach/cpu.h b/arch/arm/mach-at91/include/mach/cpu.h
index dbfd9f73f80b..c554c3e4d553 100644
--- a/arch/arm/mach-at91/include/mach/cpu.h
+++ b/arch/arm/mach-at91/include/mach/cpu.h
@@ -49,6 +49,17 @@ static inline unsigned long at91_arch_identify(void)
         return (at91_sys_read(AT91_DBGU_CIDR) & AT91_CIDR_ARCH);
 }
 
+#ifdef CONFIG_ARCH_AT91CAP9
+#include <mach/at91_pmc.h>
+
+#define ARCH_REVISION_CAP9_B    0x399
+#define ARCH_REVISION_CAP9_C    0x601
+
+static inline unsigned long at91cap9_rev_identify(void)
+{
+        return (at91_sys_read(AT91_PMC_VER));
+}
+#endif
 
 #ifdef CONFIG_ARCH_AT91RM9200
 #define cpu_is_at91rm9200()     (at91_cpu_identify() == ARCH_ID_AT91RM9200)
@@ -90,8 +101,12 @@ static inline unsigned long at91_arch_identify(void)
 
 #ifdef CONFIG_ARCH_AT91CAP9
 #define cpu_is_at91cap9()       (at91_cpu_identify() == ARCH_ID_AT91CAP9)
+#define cpu_is_at91cap9_revB()  (at91cap9_rev_identify() == ARCH_REVISION_CAP9_B)
+#define cpu_is_at91cap9_revC()  (at91cap9_rev_identify() == ARCH_REVISION_CAP9_C)
 #else
 #define cpu_is_at91cap9()       (0)
+#define cpu_is_at91cap9_revB()  (0)
+#define cpu_is_at91cap9_revC()  (0)
 #endif
 
 /*
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 2133f37906f2..d5e4e637ddec 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -21,6 +21,7 @@
 
 #include <mach/board.h>
 #include <mach/at91_rtt.h>
+#include <mach/cpu.h>
 
 
 /*