1 #ifndef __ARCH_ARM_MACH_OMAP2_SDRC_H 2 #define __ARCH_ARM_MACH_OMAP2_SDRC_H 3 4 /* 5 * OMAP2 SDRC register definitions 6 * 7 * Copyright (C) 2007 Texas Instruments, Inc. 8 * Copyright (C) 2007 Nokia Corporation 9 * 10 * Written by Paul Walmsley 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License version 2 as 14 * published by the Free Software Foundation. 15 */ 16 #undef DEBUG 17 18 #include <plat/sdrc.h> 19 20 #ifndef __ASSEMBLER__ 21 22 #include <linux/io.h> 23 24 extern void __iomem *omap2_sdrc_base; 25 extern void __iomem *omap2_sms_base; 26 27 #define OMAP_SDRC_REGADDR(reg) (omap2_sdrc_base + (reg)) 28 #define OMAP_SMS_REGADDR(reg) (omap2_sms_base + (reg)) 29 30 /* SDRC global register get/set */ 31 32 static inline void sdrc_write_reg(u32 val, u16 reg) 33 { 34 __raw_writel(val, OMAP_SDRC_REGADDR(reg)); 35 } 36 37 static inline u32 sdrc_read_reg(u16 reg) 38 { 39 return __raw_readl(OMAP_SDRC_REGADDR(reg)); 40 } 41 42 /* SMS global register get/set */ 43 44 static inline void sms_write_reg(u32 val, u16 reg) 45 { 46 __raw_writel(val, OMAP_SMS_REGADDR(reg)); 47 } 48 49 static inline u32 sms_read_reg(u16 reg) 50 { 51 return __raw_readl(OMAP_SMS_REGADDR(reg)); 52 } 53 #else 54 #define OMAP242X_SDRC_REGADDR(reg) \ 55 OMAP2_L3_IO_ADDRESS(OMAP2420_SDRC_BASE + (reg)) 56 #define OMAP243X_SDRC_REGADDR(reg) \ 57 OMAP2_L3_IO_ADDRESS(OMAP243X_SDRC_BASE + (reg)) 58 #define OMAP34XX_SDRC_REGADDR(reg) \ 59 OMAP2_L3_IO_ADDRESS(OMAP343X_SDRC_BASE + (reg)) 60 #endif /* __ASSEMBLER__ */ 61 62 /* Minimum frequency that the SDRC DLL can lock at */ 63 #define MIN_SDRC_DLL_LOCK_FREQ 83000000 64 65 /* Scale factor for fixed-point arith in omap3_core_dpll_m2_set_rate() */ 66 #define SDRC_MPURATE_SCALE 8 67 68 /* 2^SDRC_MPURATE_BASE_SHIFT: MPU MHz that SDRC_MPURATE_LOOPS is defined for */ 69 #define SDRC_MPURATE_BASE_SHIFT 9 70 71 /* 72 * SDRC_MPURATE_LOOPS: Number of MPU loops to execute at 73 * 2^MPURATE_BASE_SHIFT MHz for SDRC to stabilize 74 */ 75 #define SDRC_MPURATE_LOOPS 96 76 77 #endif 78