[ARM] 4902/1: [AT91] SAM9/CAP9 memory controller header

The AT91CAP9 processor includes the same Static Memory Controller
(SMC) peripheral as the SAM9 processors, but replaces the SDRAM
Controller with a DDR/SDR Controller (DDRSDRC).

This patch splits the existing
include/asm-arm/arch-at91/at91sam926x_mc.h into at91sam9_sdramc.h and
at91sam9_smc.h.
It also adds an at91cap9_ddrsdr.h for the DDRSDRC controller.

Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 178 insertions, 63 deletions

diff --git a/include/asm-arm/arch-at91/at91cap9_ddrsdr.h b/include/asm-arm/arch-at91/at91cap9_ddrsdr.h
new file mode 100644
index 0000000..efdb23a
--- /dev/null
+++ b/include/asm-arm/arch-at91/at91cap9_ddrsdr.h
@@ -0,0 +1,100 @@
+/*
+ * include/asm-arm/arch-at91/at91cap9_ddrsdr.h
+ *
+ * DDR/SDR Controller (DDRSDRC) - System peripherals registers.
+ * Based on AT91CAP9 datasheet revision B.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef AT91CAP9_DDRSDR_H
+#define AT91CAP9_DDRSDR_H
+
+#define AT91_DDRSDRC_MR		(AT91_DDRSDRC + 0x00)	/* Mode Register */
+#define		AT91_DDRSDRC_MODE	(0xf << 0)		/* Command Mode */
+#define			AT91_DDRSDRC_MODE_NORMAL		0
+#define			AT91_DDRSDRC_MODE_NOP		1
+#define			AT91_DDRSDRC_MODE_PRECHARGE	2
+#define			AT91_DDRSDRC_MODE_LMR		3
+#define			AT91_DDRSDRC_MODE_REFRESH	4
+#define			AT91_DDRSDRC_MODE_EXT_LMR	5
+#define			AT91_DDRSDRC_MODE_DEEP		6
+
+#define AT91_DDRSDRC_RTR	(AT91_DDRSDRC + 0x04)	/* Refresh Timer Register */
+#define		AT91_DDRSDRC_COUNT	(0xfff << 0)		/* Refresh Timer Counter */
+
+#define AT91_DDRSDRC_CR		(AT91_DDRSDRC + 0x08)	/* Configuration Register */
+#define		AT91_DDRSDRC_NC		(3 << 0)		/* Number of Column Bits */
+#define			AT91_DDRSDRC_NC_SDR8	(0 << 0)
+#define			AT91_DDRSDRC_NC_SDR9	(1 << 0)
+#define			AT91_DDRSDRC_NC_SDR10	(2 << 0)
+#define			AT91_DDRSDRC_NC_SDR11	(3 << 0)
+#define			AT91_DDRSDRC_NC_DDR9	(0 << 0)
+#define			AT91_DDRSDRC_NC_DDR10	(1 << 0)
+#define			AT91_DDRSDRC_NC_DDR11	(2 << 0)
+#define			AT91_DDRSDRC_NC_DDR12	(3 << 0)
+#define		AT91_DDRSDRC_NR		(3 << 2)		/* Number of Row Bits */
+#define			AT91_DDRSDRC_NR_11	(0 << 2)
+#define			AT91_DDRSDRC_NR_12	(1 << 2)
+#define			AT91_DDRSDRC_NR_13	(2 << 2)
+#define		AT91_DDRSDRC_CAS	(7 << 4)		/* CAS Latency */
+#define			AT91_DDRSDRC_CAS_2	(2 << 4)
+#define			AT91_DDRSDRC_CAS_3	(3 << 4)
+#define			AT91_DDRSDRC_CAS_25	(6 << 4)
+#define		AT91_DDRSDRC_DLL	(1 << 7)		/* Reset DLL */
+#define		AT91_DDRSDRC_DICDS	(1 << 8)		/* Output impedance control */
+
+#define AT91_DDRSDRC_T0PR	(AT91_DDRSDRC + 0x0C)	/* Timing 0 Register */
+#define		AT91_DDRSDRC_TRAS	(0xf <<  0)		/* Active to Precharge delay */
+#define		AT91_DDRSDRC_TRCD	(0xf <<  4)		/* Row to Column delay */
+#define		AT91_DDRSDRC_TWR	(0xf <<  8)		/* Write recovery delay */
+#define		AT91_DDRSDRC_TRC	(0xf << 12)		/* Row cycle delay */
+#define		AT91_DDRSDRC_TRP	(0xf << 16)		/* Row precharge delay */
+#define		AT91_DDRSDRC_TRRD	(0xf << 20)		/* Active BankA to BankB */
+#define		AT91_DDRSDRC_TWTR	(1   << 24)		/* Internal Write to Read delay */
+#define		AT91_DDRSDRC_TMRD	(0xf << 28)		/* Load mode to active/refresh delay */
+
+#define AT91_DDRSDRC_T1PR	(AT91_DDRSDRC + 0x10)	/* Timing 1 Register */
+#define		AT91_DDRSDRC_TRFC	(0x1f << 0)		/* Row Cycle Delay */
+#define		AT91_DDRSDRC_TXSNR	(0xff << 8)		/* Exit self-refresh to non-read */
+#define		AT91_DDRSDRC_TXSRD	(0xff << 16)		/* Exit self-refresh to read */
+#define		AT91_DDRSDRC_TXP	(0xf  << 24)		/* Exit power-down delay */
+
+#define AT91_DDRSDRC_LPR	(AT91_DDRSDRC + 0x18)	/* Low Power Register */
+#define		AT91_DDRSDRC_LPCB		(3 << 0)	/* Low-power Configurations */
+#define			AT91_DDRSDRC_LPCB_DISABLE		0
+#define			AT91_DDRSDRC_LPCB_SELF_REFRESH		1
+#define			AT91_DDRSDRC_LPCB_POWER_DOWN		2
+#define			AT91_DDRSDRC_LPCB_DEEP_POWER_DOWN	3
+#define		AT91_DDRSDRC_CLKFR		(1 << 2)	/* Clock Frozen */
+#define		AT91_DDRSDRC_PASR		(7 << 4)	/* Partial Array Self Refresh */
+#define		AT91_DDRSDRC_TCSR		(3 << 8)	/* Temperature Compensated Self Refresh */
+#define		AT91_DDRSDRC_DS			(3 << 10)	/* Drive Strength */
+#define		AT91_DDRSDRC_TIMEOUT		(3 << 12)	/* Time to define when Low Power Mode is enabled */
+#define			AT91_DDRSDRC_TIMEOUT_0_CLK_CYCLES	(0 << 12)
+#define			AT91_DDRSDRC_TIMEOUT_64_CLK_CYCLES	(1 << 12)
+#define			AT91_DDRSDRC_TIMEOUT_128_CLK_CYCLES	(2 << 12)
+
+#define AT91_DDRSDRC_MDR	(AT91_DDRSDRC + 0x1C)	/* Memory Device Register */
+#define		AT91_DDRSDRC_MD		(3 << 0)		/* Memory Device Type */
+#define			AT91_DDRSDRC_MD_SDR		0
+#define			AT91_DDRSDRC_MD_LOW_POWER_SDR	1
+#define			AT91_DDRSDRC_MD_DDR		2
+#define			AT91_DDRSDRC_MD_LOW_POWER_DDR	3
+
+#define AT91_DDRSDRC_DLLR	(AT91_DDRSDRC + 0x20)	/* DLL Information Register */
+#define		AT91_DDRSDRC_MDINC	(1 << 0)		/* Master Delay increment */
+#define		AT91_DDRSDRC_MDDEC	(1 << 1)		/* Master Delay decrement */
+#define		AT91_DDRSDRC_MDOVF	(1 << 2)		/* Master Delay Overflow */
+#define		AT91_DDRSDRC_SDCOVF	(1 << 3)		/* Slave Delay Correction Overflow */
+#define		AT91_DDRSDRC_SDCUDF	(1 << 4)		/* Slave Delay Correction Underflow */
+#define		AT91_DDRSDRC_SDERF	(1 << 5)		/* Slave Delay Correction error */
+#define		AT91_DDRSDRC_MDVAL	(0xff <<  8)		/* Master Delay value */
+#define		AT91_DDRSDRC_SDVAL	(0xff << 16)		/* Slave Delay value */
+#define		AT91_DDRSDRC_SDCVAL	(0xff << 24)		/* Slave Delay Correction value */
+
+
+#endif
diff --git a/include/asm-arm/arch-at91/at91sam926x_mc.h b/include/asm-arm/arch-at91/at91sam9_sdramc.h
index d82631c..d3b8b3d 100644
--- a/include/asm-arm/arch-at91/at91sam926x_mc.h
+++ b/include/asm-arm/arch-at91/at91sam9_sdramc.h
@@ -1,7 +1,7 @@
 /*
- * include/asm-arm/arch-at91/at91sam926x_mc.h
+ * include/asm-arm/arch-at91/at91sam9_sdramc.h
  *
- * Memory Controllers (SMC, SDRAMC) - System peripherals registers.
+ * SDRAM Controllers (SDRAMC) - System peripherals registers.
  * Based on AT91SAM9261 datasheet revision D.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -10,8 +10,8 @@
  * (at your option) any later version.
  */
 
-#ifndef AT91SAM926x_MC_H
-#define AT91SAM926x_MC_H
+#ifndef AT91SAM9_SDRAMC_H
+#define AT91SAM9_SDRAMC_H
 
 /* SDRAM Controller (SDRAMC) registers */
 #define AT91_SDRAMC_MR		(AT91_SDRAMC + 0x00)	/* SDRAM Controller Mode Register */
@@ -62,7 +62,7 @@
 #define			AT91_SDRAMC_LPCB_DEEP_POWER_DOWN	3
 #define		AT91_SDRAMC_PASR		(7 << 4)	/* Partial Array Self Refresh */
 #define		AT91_SDRAMC_TCSR		(3 << 8)	/* Temperature Compensated Self Refresh */
-#define		AT91_SDRAMC_DS			(3 << 10)	/* Drive Strenght */
+#define		AT91_SDRAMC_DS			(3 << 10)	/* Drive Strength */
 #define		AT91_SDRAMC_TIMEOUT		(3 << 12)	/* Time to define when Low Power Mode is enabled */
 #define			AT91_SDRAMC_TIMEOUT_0_CLK_CYCLES	(0 << 12)
 #define			AT91_SDRAMC_TIMEOUT_64_CLK_CYCLES	(1 << 12)
@@ -80,62 +80,4 @@
 #define			AT91_SDRAMC_MD_LOW_POWER_SDRAM	1
 
 
-/* Static Memory Controller (SMC) registers */
-#define AT91_SMC_SETUP(n)	(AT91_SMC + 0x00 + ((n)*0x10))	/* Setup Register for CS n */
-#define		AT91_SMC_NWESETUP	(0x3f << 0)			/* NWE Setup Length */
-#define			AT91_SMC_NWESETUP_(x)	((x) << 0)
-#define		AT91_SMC_NCS_WRSETUP	(0x3f << 8)			/* NCS Setup Length in Write Access */
-#define			AT91_SMC_NCS_WRSETUP_(x)	((x) << 8)
-#define		AT91_SMC_NRDSETUP	(0x3f << 16)			/* NRD Setup Length */
-#define			AT91_SMC_NRDSETUP_(x)	((x) << 16)
-#define		AT91_SMC_NCS_RDSETUP	(0x3f << 24)			/* NCS Setup Length in Read Access */
-#define			AT91_SMC_NCS_RDSETUP_(x)	((x) << 24)
-
-#define AT91_SMC_PULSE(n)	(AT91_SMC + 0x04 + ((n)*0x10))	/* Pulse Register for CS n */
-#define		AT91_SMC_NWEPULSE	(0x7f <<  0)			/* NWE Pulse Length */
-#define			AT91_SMC_NWEPULSE_(x)	((x) << 0)
-#define		AT91_SMC_NCS_WRPULSE	(0x7f <<  8)			/* NCS Pulse Length in Write Access */
-#define			AT91_SMC_NCS_WRPULSE_(x)((x) << 8)
-#define		AT91_SMC_NRDPULSE	(0x7f << 16)			/* NRD Pulse Length */
-#define			AT91_SMC_NRDPULSE_(x)	((x) << 16)
-#define		AT91_SMC_NCS_RDPULSE	(0x7f << 24)			/* NCS Pulse Length in Read Access */
-#define			AT91_SMC_NCS_RDPULSE_(x)((x) << 24)
-
-#define AT91_SMC_CYCLE(n)	(AT91_SMC + 0x08 + ((n)*0x10))	/* Cycle Register for CS n */
-#define		AT91_SMC_NWECYCLE	(0x1ff << 0 )			/* Total Write Cycle Length */
-#define			AT91_SMC_NWECYCLE_(x)	((x) << 0)
-#define		AT91_SMC_NRDCYCLE	(0x1ff << 16)			/* Total Read Cycle Length */
-#define			AT91_SMC_NRDCYCLE_(x)	((x) << 16)
-
-#define AT91_SMC_MODE(n)	(AT91_SMC + 0x0c + ((n)*0x10))	/* Mode Register for CS n */
-#define		AT91_SMC_READMODE	(1 <<  0)			/* Read Mode */
-#define		AT91_SMC_WRITEMODE	(1 <<  1)			/* Write Mode */
-#define		AT91_SMC_EXNWMODE	(3 <<  4)			/* NWAIT Mode */
-#define			AT91_SMC_EXNWMODE_DISABLE	(0 << 4)
-#define			AT91_SMC_EXNWMODE_FROZEN	(2 << 4)
-#define			AT91_SMC_EXNWMODE_READY		(3 << 4)
-#define		AT91_SMC_BAT		(1 <<  8)			/* Byte Access Type */
-#define			AT91_SMC_BAT_SELECT		(0 << 8)
-#define			AT91_SMC_BAT_WRITE		(1 << 8)
-#define		AT91_SMC_DBW		(3 << 12)			/* Data Bus Width */
-#define			AT91_SMC_DBW_8			(0 << 12)
-#define			AT91_SMC_DBW_16			(1 << 12)
-#define			AT91_SMC_DBW_32			(2 << 12)
-#define		AT91_SMC_TDF		(0xf << 16)			/* Data Float Time. */
-#define			AT91_SMC_TDF_(x)		((x) << 16)
-#define		AT91_SMC_TDFMODE	(1 << 20)			/* TDF Optimization - Enabled */
-#define		AT91_SMC_PMEN		(1 << 24)			/* Page Mode Enabled */
-#define		AT91_SMC_PS		(3 << 28)			/* Page Size */
-#define			AT91_SMC_PS_4			(0 << 28)
-#define			AT91_SMC_PS_8			(1 << 28)
-#define			AT91_SMC_PS_16			(2 << 28)
-#define			AT91_SMC_PS_32			(3 << 28)
-
-#if defined(AT91_SMC1)		/* The AT91SAM9263 has 2 Static Memory contollers */
-#define AT91_SMC1_SETUP(n)	(AT91_SMC1 + 0x00 + ((n)*0x10))	/* Setup Register for CS n */
-#define AT91_SMC1_PULSE(n)	(AT91_SMC1 + 0x04 + ((n)*0x10))	/* Pulse Register for CS n */
-#define AT91_SMC1_CYCLE(n)	(AT91_SMC1 + 0x08 + ((n)*0x10))	/* Cycle Register for CS n */
-#define AT91_SMC1_MODE(n)	(AT91_SMC1 + 0x0c + ((n)*0x10))	/* Mode Register for CS n */
-#endif
-
 #endif
diff --git a/include/asm-arm/arch-at91/at91sam9_smc.h b/include/asm-arm/arch-at91/at91sam9_smc.h
new file mode 100644
index 0000000..9e49eed
--- /dev/null
+++ b/include/asm-arm/arch-at91/at91sam9_smc.h
@@ -0,0 +1,73 @@
+/*
+ * include/asm-arm/arch-at91/at91sam9_smc.h
+ *
+ * Static Memory Controllers (SMC) - System peripherals registers.
+ * Based on AT91SAM9261 datasheet revision D.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef AT91SAM9_SMC_H
+#define AT91SAM9_SMC_H
+
+#define AT91_SMC_SETUP(n)	(AT91_SMC + 0x00 + ((n)*0x10))	/* Setup Register for CS n */
+#define		AT91_SMC_NWESETUP	(0x3f << 0)			/* NWE Setup Length */
+#define			AT91_SMC_NWESETUP_(x)	((x) << 0)
+#define		AT91_SMC_NCS_WRSETUP	(0x3f << 8)			/* NCS Setup Length in Write Access */
+#define			AT91_SMC_NCS_WRSETUP_(x)	((x) << 8)
+#define		AT91_SMC_NRDSETUP	(0x3f << 16)			/* NRD Setup Length */
+#define			AT91_SMC_NRDSETUP_(x)	((x) << 16)
+#define		AT91_SMC_NCS_RDSETUP	(0x3f << 24)			/* NCS Setup Length in Read Access */
+#define			AT91_SMC_NCS_RDSETUP_(x)	((x) << 24)
+
+#define AT91_SMC_PULSE(n)	(AT91_SMC + 0x04 + ((n)*0x10))	/* Pulse Register for CS n */
+#define		AT91_SMC_NWEPULSE	(0x7f <<  0)			/* NWE Pulse Length */
+#define			AT91_SMC_NWEPULSE_(x)	((x) << 0)
+#define		AT91_SMC_NCS_WRPULSE	(0x7f <<  8)			/* NCS Pulse Length in Write Access */
+#define			AT91_SMC_NCS_WRPULSE_(x)((x) << 8)
+#define		AT91_SMC_NRDPULSE	(0x7f << 16)			/* NRD Pulse Length */
+#define			AT91_SMC_NRDPULSE_(x)	((x) << 16)
+#define		AT91_SMC_NCS_RDPULSE	(0x7f << 24)			/* NCS Pulse Length in Read Access */
+#define			AT91_SMC_NCS_RDPULSE_(x)((x) << 24)
+
+#define AT91_SMC_CYCLE(n)	(AT91_SMC + 0x08 + ((n)*0x10))	/* Cycle Register for CS n */
+#define		AT91_SMC_NWECYCLE	(0x1ff << 0 )			/* Total Write Cycle Length */
+#define			AT91_SMC_NWECYCLE_(x)	((x) << 0)
+#define		AT91_SMC_NRDCYCLE	(0x1ff << 16)			/* Total Read Cycle Length */
+#define			AT91_SMC_NRDCYCLE_(x)	((x) << 16)
+
+#define AT91_SMC_MODE(n)	(AT91_SMC + 0x0c + ((n)*0x10))	/* Mode Register for CS n */
+#define		AT91_SMC_READMODE	(1 <<  0)			/* Read Mode */
+#define		AT91_SMC_WRITEMODE	(1 <<  1)			/* Write Mode */
+#define		AT91_SMC_EXNWMODE	(3 <<  4)			/* NWAIT Mode */
+#define			AT91_SMC_EXNWMODE_DISABLE	(0 << 4)
+#define			AT91_SMC_EXNWMODE_FROZEN	(2 << 4)
+#define			AT91_SMC_EXNWMODE_READY		(3 << 4)
+#define		AT91_SMC_BAT		(1 <<  8)			/* Byte Access Type */
+#define			AT91_SMC_BAT_SELECT		(0 << 8)
+#define			AT91_SMC_BAT_WRITE		(1 << 8)
+#define		AT91_SMC_DBW		(3 << 12)			/* Data Bus Width */
+#define			AT91_SMC_DBW_8			(0 << 12)
+#define			AT91_SMC_DBW_16			(1 << 12)
+#define			AT91_SMC_DBW_32			(2 << 12)
+#define		AT91_SMC_TDF		(0xf << 16)			/* Data Float Time. */
+#define			AT91_SMC_TDF_(x)		((x) << 16)
+#define		AT91_SMC_TDFMODE	(1 << 20)			/* TDF Optimization - Enabled */
+#define		AT91_SMC_PMEN		(1 << 24)			/* Page Mode Enabled */
+#define		AT91_SMC_PS		(3 << 28)			/* Page Size */
+#define			AT91_SMC_PS_4			(0 << 28)
+#define			AT91_SMC_PS_8			(1 << 28)
+#define			AT91_SMC_PS_16			(2 << 28)
+#define			AT91_SMC_PS_32			(3 << 28)
+
+#if defined(AT91_SMC1)		/* The AT91SAM9263 has 2 Static Memory contollers */
+#define AT91_SMC1_SETUP(n)	(AT91_SMC1 + 0x00 + ((n)*0x10))	/* Setup Register for CS n */
+#define AT91_SMC1_PULSE(n)	(AT91_SMC1 + 0x04 + ((n)*0x10))	/* Pulse Register for CS n */
+#define AT91_SMC1_CYCLE(n)	(AT91_SMC1 + 0x08 + ((n)*0x10))	/* Cycle Register for CS n */
+#define AT91_SMC1_MODE(n)	(AT91_SMC1 + 0x0c + ((n)*0x10))	/* Mode Register for CS n */
+#endif
+
+#endif