ARM: at91: introduce SAMA5 support

This patch introduces the SAMA5 support and a generic board file for SAMA5
devices. It also updates the PMC driver to manage clock division which is a
requirement since some peripherals can't work at the bus frequency on SAMA5.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

3 files changed, 107 insertions, 4 deletions

diff --git a/arch/arm/mach-at91/include/mach/at91_pmc.h b/arch/arm/mach-at91/include/mach/at91_pmc.h
index ea2c57a86ca6..31df12029c4e 100644
--- a/arch/arm/mach-at91/include/mach/at91_pmc.h
+++ b/arch/arm/mach-at91/include/mach/at91_pmc.h
@@ -75,6 +75,9 @@ extern void __iomem *at91_pmc_base;
 #define		AT91_PMC_PLLCOUNT	(0x3f  <<  8)		/* PLL Counter */
 #define		AT91_PMC_OUT		(3     << 14)		/* PLL Clock Frequency Range */
 #define		AT91_PMC_MUL		(0x7ff << 16)		/* PLL Multiplier */
+#define		AT91_PMC_MUL_GET(n)	((n) >> 16 & 0x7ff)
+#define		AT91_PMC3_MUL		(0x7f  << 18)		/* PLL Multiplier [SAMA5 only] */
+#define		AT91_PMC3_MUL_GET(n)	((n) >> 18 & 0x7f)
 #define		AT91_PMC_USBDIV		(3     << 28)		/* USB Divisor (PLLB only) */
 #define			AT91_PMC_USBDIV_1		(0 << 28)
 #define			AT91_PMC_USBDIV_2		(1 << 28)
@@ -167,11 +170,18 @@ extern void __iomem *at91_pmc_base;
 #define		AT91_PMC_WPVS		(0x1  <<  0)		/* Write Protect Violation Status */
 #define		AT91_PMC_WPVSRC		(0xffff  <<  8)		/* Write Protect Violation Source */
 
-#define AT91_PMC_PCR		0x10c			/* Peripheral Control Register [some SAM9] */
+#define AT91_PMC_PCER1		0x100			/* Peripheral Clock Enable Register 1 [SAMA5 only]*/
+#define AT91_PMC_PCDR1		0x104			/* Peripheral Clock Enable Register 1 */
+#define AT91_PMC_PCSR1		0x108			/* Peripheral Clock Enable Register 1 */
+
+#define AT91_PMC_PCR		0x10c			/* Peripheral Control Register [some SAM9 and SAMA5] */
 #define		AT91_PMC_PCR_PID	(0x3f  <<  0)		/* Peripheral ID */
-#define		AT91_PMC_PCR_CMD	(0x1  <<  12)		/* Command */
-#define		AT91_PMC_PCR_DIV	(0x3  <<  16)		/* Divisor Value */
-#define		AT91_PMC_PCRDIV(n)	(((n) <<  16) & AT91_PMC_PCR_DIV)
+#define		AT91_PMC_PCR_CMD	(0x1  <<  12)		/* Command (read=0, write=1) */
+#define		AT91_PMC_PCR_DIV(n)	((n)  <<  16)		/* Divisor Value */
+#define			AT91_PMC_PCR_DIV0	0x0			/* Peripheral clock is MCK */
+#define			AT91_PMC_PCR_DIV2	0x2			/* Peripheral clock is MCK/2 */
+#define			AT91_PMC_PCR_DIV4	0x4			/* Peripheral clock is MCK/4 */
+#define			AT91_PMC_PCR_DIV8	0x8			/* Peripheral clock is MCK/8 */
 #define		AT91_PMC_PCR_EN		(0x1  <<  28)		/* Enable */
 
 #endif
diff --git a/arch/arm/mach-at91/include/mach/cpu.h b/arch/arm/mach-at91/include/mach/cpu.h
index b6504c19d55c..0f3379fe645f 100644
--- a/arch/arm/mach-at91/include/mach/cpu.h
+++ b/arch/arm/mach-at91/include/mach/cpu.h
@@ -36,6 +36,8 @@
 #define ARCH_ID_AT91M40807	0x14080745
 #define ARCH_ID_AT91R40008	0x44000840
 
+#define ARCH_ID_SAMA5D3		0x8A5C07C0
+
 #define ARCH_EXID_AT91SAM9M11	0x00000001
 #define ARCH_EXID_AT91SAM9M10	0x00000002
 #define ARCH_EXID_AT91SAM9G46	0x00000003
@@ -47,6 +49,11 @@
 #define ARCH_EXID_AT91SAM9G25	0x00000003
 #define ARCH_EXID_AT91SAM9X25	0x00000004
 
+#define ARCH_EXID_SAMA5D31	0x00444300
+#define ARCH_EXID_SAMA5D33	0x00414300
+#define ARCH_EXID_SAMA5D34	0x00414301
+#define ARCH_EXID_SAMA5D35	0x00584300
+
 #define ARCH_FAMILY_AT91X92	0x09200000
 #define ARCH_FAMILY_AT91SAM9	0x01900000
 #define ARCH_FAMILY_AT91SAM9XE	0x02900000
@@ -75,6 +82,9 @@ enum at91_soc_type {
 	/* SAM9N12 */
 	AT91_SOC_SAM9N12,
 
+	/* SAMA5D3 */
+	AT91_SOC_SAMA5D3,
+
 	/* Unknown type */
 	AT91_SOC_NONE
 };
@@ -93,6 +103,10 @@ enum at91_soc_subtype {
 	AT91_SOC_SAM9G15, AT91_SOC_SAM9G35, AT91_SOC_SAM9X35,
 	AT91_SOC_SAM9G25, AT91_SOC_SAM9X25,
 
+	/* SAMA5D3 */
+	AT91_SOC_SAMA5D31, AT91_SOC_SAMA5D33, AT91_SOC_SAMA5D34,
+	AT91_SOC_SAMA5D35,
+
 	/* Unknown subtype */
 	AT91_SOC_SUBTYPE_NONE
 };
@@ -187,6 +201,12 @@ static inline int at91_soc_is_detected(void)
 #define cpu_is_at91sam9n12()	(0)
 #endif
 
+#ifdef CONFIG_SOC_SAMA5D3
+#define cpu_is_sama5d3()	(at91_soc_initdata.type == AT91_SOC_SAMA5D3)
+#else
+#define cpu_is_sama5d3()	(0)
+#endif
+
 /*
  * Since this is ARM, we will never run on any AVR32 CPU. But these
  * definitions may reduce clutter in common drivers.
diff --git a/arch/arm/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
new file mode 100644
index 000000000000..6dc81ee38048
--- /dev/null
+++ b/arch/arm/mach-at91/include/mach/sama5d3.h
@@ -0,0 +1,73 @@
+/*
+ * Chip-specific header file for the SAMA5D3 family
+ *
+ *  Copyright (C) 2013 Atmel,
+ *                2013 Ludovic Desroches <ludovic.desroches@atmel.com>
+ *
+ * Common definitions.
+ * Based on SAMA5D3 datasheet.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#ifndef SAMA5D3_H
+#define SAMA5D3_H
+
+/*
+ * Peripheral identifiers/interrupts.
+ */
+#define AT91_ID_FIQ		 0	/* Advanced Interrupt Controller (FIQ) */
+#define AT91_ID_SYS		 1	/* System Peripherals */
+#define SAMA5D3_ID_DBGU		 2	/* debug Unit (usually no special interrupt line) */
+#define AT91_ID_PIT		 3	/* PIT */
+#define SAMA5D3_ID_WDT		 4	/* Watchdog Timer Interrupt */
+#define SAMA5D3_ID_HSMC		 5	/* Static Memory Controller */
+#define SAMA5D3_ID_PIOA		 6	/* PIOA */
+#define SAMA5D3_ID_PIOB		 7	/* PIOB */
+#define SAMA5D3_ID_PIOC		 8	/* PIOC */
+#define SAMA5D3_ID_PIOD		 9	/* PIOD */
+#define SAMA5D3_ID_PIOE		10	/* PIOE */
+#define SAMA5D3_ID_SMD		11	/* SMD Soft Modem */
+#define SAMA5D3_ID_USART0	12	/* USART0 */
+#define SAMA5D3_ID_USART1	13	/* USART1 */
+#define SAMA5D3_ID_USART2	14	/* USART2 */
+#define SAMA5D3_ID_USART3	15	/* USART3 */
+#define SAMA5D3_ID_UART0	16	/* UART 0 */
+#define SAMA5D3_ID_UART1	17	/* UART 1 */
+#define SAMA5D3_ID_TWI0		18	/* Two-Wire Interface 0 */
+#define SAMA5D3_ID_TWI1		19	/* Two-Wire Interface 1 */
+#define SAMA5D3_ID_TWI2		20	/* Two-Wire Interface 2 */
+#define SAMA5D3_ID_HSMCI0	21	/* MCI */
+#define SAMA5D3_ID_HSMCI1	22	/* MCI */
+#define SAMA5D3_ID_HSMCI2	23	/* MCI */
+#define SAMA5D3_ID_SPI0		24	/* Serial Peripheral Interface 0 */
+#define SAMA5D3_ID_SPI1		25	/* Serial Peripheral Interface 1 */
+#define SAMA5D3_ID_TC0		26	/* Timer Counter 0 */
+#define SAMA5D3_ID_TC1		27	/* Timer Counter 2 */
+#define SAMA5D3_ID_PWM		28	/* Pulse Width Modulation Controller */
+#define SAMA5D3_ID_ADC		29	/* Touch Screen ADC Controller */
+#define SAMA5D3_ID_DMA0		30	/* DMA Controller 0 */
+#define SAMA5D3_ID_DMA1		31	/* DMA Controller 1 */
+#define SAMA5D3_ID_UHPHS	32	/* USB Host High Speed */
+#define SAMA5D3_ID_UDPHS	33	/* USB Device High Speed */
+#define SAMA5D3_ID_GMAC		34	/* Gigabit Ethernet MAC */
+#define SAMA5D3_ID_EMAC		35	/* Ethernet MAC */
+#define SAMA5D3_ID_LCDC		36	/* LCD Controller */
+#define SAMA5D3_ID_ISI		37	/* Image Sensor Interface */
+#define SAMA5D3_ID_SSC0		38	/* Synchronous Serial Controller 0 */
+#define SAMA5D3_ID_SSC1		39	/* Synchronous Serial Controller 1 */
+#define SAMA5D3_ID_CAN0		40	/* CAN Controller 0 */
+#define SAMA5D3_ID_CAN1		41	/* CAN Controller 1 */
+#define SAMA5D3_ID_SHA		42	/* Secure Hash Algorithm */
+#define SAMA5D3_ID_AES		43	/* Advanced Encryption Standard */
+#define SAMA5D3_ID_TDES		44	/* Triple Data Encryption Standard */
+#define SAMA5D3_ID_TRNG		45	/* True Random Generator Number */
+#define SAMA5D3_ID_IRQ0		47	/* Advanced Interrupt Controller (IRQ0) */
+
+/*
+ * Internal Memory
+ */
+#define SAMA5D3_SRAM_BASE	0x00300000	/* Internal SRAM base address */
+#define SAMA5D3_SRAM_SIZE	(128 * SZ_1K)	/* Internal SRAM size (128Kb) */
+
+#endif