diff options
Diffstat (limited to 'arch/arm/boards/edb93xx/sdram_cfg.h')
| -rw-r--r-- | arch/arm/boards/edb93xx/sdram_cfg.h | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/arch/arm/boards/edb93xx/sdram_cfg.h b/arch/arm/boards/edb93xx/sdram_cfg.h deleted file mode 100644 index 0dc1df24b2..0000000000 --- a/arch/arm/boards/edb93xx/sdram_cfg.h +++ /dev/null @@ -1,141 +0,0 @@ -/* - * Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net> - * - * Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <config.h> -#include <mach/ep93xx-regs.h> - -#define SDRAM_BASE_ADDR CONFIG_EP93XX_SDRAM_BANK0_BASE - -#ifdef CONFIG_EP93XX_SDCE0_PHYS_OFFSET -#define SDRAM_DEVCFG_REG devcfg0 -#elif defined(CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET) -#define SDRAM_DEVCFG_REG devcfg3 -#else -#error "SDRAM bank configuration" -#endif - -#if defined(CONFIG_MACH_EDB9301) || defined(CONFIG_MACH_EDB9302) ||\ - defined(CONFIG_MACH_EDB9302A) -/* - * 1x Samsung K4S561632C-TC/L75 4M x 16bit x 4 banks SDRAM - * - * CLK cycle time min: - * @ CAS latency = 3: 7.5ns - * @ CAS latency = 2: 10ns - * We're running at 66MHz (EDB9301) / 100Mhz (EDB9302(a)) external - * bus speed (HCLK), with a cycle time of 15ns / 10ns, so it's safe - * to use CAS latency = 2 - * - * RAS-to-CAS delay min: - * 20ns - * At 15ns/10ns cycle time, we use RAS-to-CAS delay = 2 - * - * SROMLL = 1: Swap BA[1:0] with A[13:12], making the SDRAM appear - * as four blocks of 8MB size, instead of eight blocks of 4MB size: - * - * EDB9301/EDB9302: - * - * 0x00000000 - 0x007fffff - * 0x01000000 - 0x017fffff - * 0x04000000 - 0x047fffff - * 0x05000000 - 0x057fffff - * - * - * EDB9302a: - * - * 0xc0000000 - 0xc07fffff - * 0xc1000000 - 0xc17fffff - * 0xc4000000 - 0xc47fffff - * 0xc5000000 - 0xc57fffff - * - * BANKCOUNT = 1: This is a device with four banks - */ - -#define SDRAM_DEVCFG_VAL (SDRAM_DEVCFG_BANKCOUNT | \ - SDRAM_DEVCFG_SROMLL | \ - SDRAM_DEVCFG_CASLAT_2 | \ - SDRAM_DEVCFG_RASTOCAS_2 | \ - SDRAM_DEVCFG_EXTBUSWIDTH) - -/* - * 16 bit ext. bus - * - * A[22:09] is output as SYA[13:0] - * CAS latency: 2 - * Burst type: sequential - * Burst length: 8 (required for 16 bit ext. bus) - * SYA[13:0] = 0x0023 - */ -#define SDRAM_MODE_REG_VAL 0x4600 - -#define SDRAM_BANK_SEL_0 0x00000000 /* A[22:21] = b00 */ -#define SDRAM_BANK_SEL_1 0x00200000 /* A[22:21] = b01 */ -#define SDRAM_BANK_SEL_2 0x00400000 /* A[22:21] = b10 */ -#define SDRAM_BANK_SEL_3 0x00600000 /* A[22:21] = b11 */ - -#elif defined(CONFIG_MACH_EDB9307) || defined(CONFIG_MACH_EDB9307A) ||\ - defined CONFIG_MACH_EDB9312 || defined(CONFIG_MACH_EDB9315) ||\ - defined(CONFIG_MACH_EDB9315A) -/* - * 2x Samsung K4S561632C-TC/L75 4M x 16bit x 4 banks SDRAM - * - * CLK cycle time min: - * @ CAS latency = 3: 7.5ns - * @ CAS latency = 2: 10ns - * We're running at 100MHz (10ns cycle time) external bus speed (HCLK), - * so it's safe to use CAS latency = 2 - * - * RAS-to-CAS delay min: - * 20ns - * At 10ns cycle time, we use RAS-to-CAS delay = 2 - * - * EDB9307, EDB9312, EDB9315: - * - * 0x00000000 - 0x01ffffff - * 0x04000000 - 0x05ffffff - * - * - * EDB9307a, EDB9315a: - * - * 0xc0000000 - 0xc1ffffff - * 0xc4000000 - 0xc5ffffff - */ - -#define SDRAM_DEVCFG_VAL (SDRAM_DEVCFG_BANKCOUNT | \ - SDRAM_DEVCFG_SROMLL | \ - SDRAM_DEVCFG_CASLAT_2 | \ - SDRAM_DEVCFG_RASTOCAS_2) - -/* - * 32 bit ext. bus - * - * A[23:10] is output as SYA[13:0] - * CAS latency: 2 - * Burst type: sequential - * Burst length: 4 - * SYA[13:0] = 0x0022 - */ -#define SDRAM_MODE_REG_VAL 0x8800 - -#define SDRAM_BANK_SEL_0 0x00000000 /* A[23:22] = b00 */ -#define SDRAM_BANK_SEL_1 0x00400000 /* A[23:22] = b01 */ -#define SDRAM_BANK_SEL_2 0x00800000 /* A[23:22] = b10 */ -#define SDRAM_BANK_SEL_3 0x00c00000 /* A[23:22] = b11 */ -#endif |