[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>

1 files changed, 83 insertions, 0 deletions

diff --git a/include/asm-arm/arch-at91/at91sam9_sdramc.h b/include/asm-arm/arch-at91/at91sam9_sdramc.h
new file mode 100644
index 000000000000..d3b8b3da6b4d
--- /dev/null
+++ b/include/asm-arm/arch-at91/at91sam9_sdramc.h
@@ -0,0 +1,83 @@
+/*
+ * include/asm-arm/arch-at91/at91sam9_sdramc.h
+ *
+ * SDRAM Controllers (SDRAMC) - 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_SDRAMC_H
+#define AT91SAM9_SDRAMC_H
+
+/* SDRAM Controller (SDRAMC) registers */
+#define AT91_SDRAMC_MR          (AT91_SDRAMC + 0x00)    /* SDRAM Controller Mode Register */
+#define         AT91_SDRAMC_MODE        (0xf << 0)              /* Command Mode */
+#define                 AT91_SDRAMC_MODE_NORMAL         0
+#define                 AT91_SDRAMC_MODE_NOP            1
+#define                 AT91_SDRAMC_MODE_PRECHARGE      2
+#define                 AT91_SDRAMC_MODE_LMR            3
+#define                 AT91_SDRAMC_MODE_REFRESH        4
+#define                 AT91_SDRAMC_MODE_EXT_LMR        5
+#define                 AT91_SDRAMC_MODE_DEEP           6
+
+#define AT91_SDRAMC_TR          (AT91_SDRAMC + 0x04)    /* SDRAM Controller Refresh Timer Register */
+#define         AT91_SDRAMC_COUNT       (0xfff << 0)            /* Refresh Timer Counter */
+
+#define AT91_SDRAMC_CR          (AT91_SDRAMC + 0x08)    /* SDRAM Controller Configuration Register */
+#define         AT91_SDRAMC_NC          (3 << 0)                /* Number of Column Bits */
+#define                 AT91_SDRAMC_NC_8        (0 << 0)
+#define                 AT91_SDRAMC_NC_9        (1 << 0)
+#define                 AT91_SDRAMC_NC_10       (2 << 0)
+#define                 AT91_SDRAMC_NC_11       (3 << 0)
+#define         AT91_SDRAMC_NR          (3 << 2)                /* Number of Row Bits */
+#define                 AT91_SDRAMC_NR_11       (0 << 2)
+#define                 AT91_SDRAMC_NR_12       (1 << 2)
+#define                 AT91_SDRAMC_NR_13       (2 << 2)
+#define         AT91_SDRAMC_NB          (1 << 4)                /* Number of Banks */
+#define                 AT91_SDRAMC_NB_2        (0 << 4)
+#define                 AT91_SDRAMC_NB_4        (1 << 4)
+#define         AT91_SDRAMC_CAS         (3 << 5)                /* CAS Latency */
+#define                 AT91_SDRAMC_CAS_1       (1 << 5)
+#define                 AT91_SDRAMC_CAS_2       (2 << 5)
+#define                 AT91_SDRAMC_CAS_3       (3 << 5)
+#define         AT91_SDRAMC_DBW         (1 << 7)                /* Data Bus Width */
+#define                 AT91_SDRAMC_DBW_32      (0 << 7)
+#define                 AT91_SDRAMC_DBW_16      (1 << 7)
+#define         AT91_SDRAMC_TWR         (0xf <<  8)             /* Write Recovery Delay */
+#define         AT91_SDRAMC_TRC         (0xf << 12)             /* Row Cycle Delay */
+#define         AT91_SDRAMC_TRP         (0xf << 16)             /* Row Precharge Delay */
+#define         AT91_SDRAMC_TRCD        (0xf << 20)             /* Row to Column Delay */
+#define         AT91_SDRAMC_TRAS        (0xf << 24)             /* Active to Precharge Delay */
+#define         AT91_SDRAMC_TXSR        (0xf << 28)             /* Exit Self Refresh to Active Delay */
+
+#define AT91_SDRAMC_LPR         (AT91_SDRAMC + 0x10)    /* SDRAM Controller Low Power Register */
+#define         AT91_SDRAMC_LPCB                (3 << 0)        /* Low-power Configurations */
+#define                 AT91_SDRAMC_LPCB_DISABLE                0
+#define                 AT91_SDRAMC_LPCB_SELF_REFRESH           1
+#define                 AT91_SDRAMC_LPCB_POWER_DOWN             2
+#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 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)
+#define                 AT91_SDRAMC_TIMEOUT_128_CLK_CYCLES      (2 << 12)
+
+#define AT91_SDRAMC_IER         (AT91_SDRAMC + 0x14)    /* SDRAM Controller Interrupt Enable Register */
+#define AT91_SDRAMC_IDR         (AT91_SDRAMC + 0x18)    /* SDRAM Controller Interrupt Disable Register */
+#define AT91_SDRAMC_IMR         (AT91_SDRAMC + 0x1C)    /* SDRAM Controller Interrupt Mask Register */
+#define AT91_SDRAMC_ISR         (AT91_SDRAMC + 0x20)    /* SDRAM Controller Interrupt Status Register */
+#define         AT91_SDRAMC_RES         (1 << 0)                /* Refresh Error Status */
+
+#define AT91_SDRAMC_MDR         (AT91_SDRAMC + 0x24)    /* SDRAM Memory Device Register */
+#define         AT91_SDRAMC_MD          (3 << 0)                /* Memory Device Type */
+#define                 AT91_SDRAMC_MD_SDRAM            0
+#define                 AT91_SDRAMC_MD_LOW_POWER_SDRAM  1
+
+
+#endif