Title: [6778] trunk/arch/blackfin: Fix bug [#5224], the BF526-EZ-Board changed SDRAM chips between revisions, so create a new timing table to accommodate both
- Revision
- 6778
- Author
- gyang
- Date
- 2009-06-17 23:32:04 -0500 (Wed, 17 Jun 2009)
Log Message
Fix bug [#5224], the BF526-EZ-Board changed SDRAM chips between revisions, so create a new timing table to accommodate both
Modified Paths
Diff
Modified: trunk/arch/blackfin/Kconfig (6777 => 6778)
--- trunk/arch/blackfin/Kconfig 2009-06-18 04:21:56 UTC (rev 6777)
+++ trunk/arch/blackfin/Kconfig 2009-06-18 04:32:04 UTC (rev 6778)
@@ -358,7 +358,7 @@
config MEM_MT48LC32M16A2TG_75
bool
- depends on (BFIN527_EZKIT || BFIN532_IP0X || BLACKSTAMP || BFIN526_EZBRD)
+ depends on (BFIN527_EZKIT || BFIN532_IP0X || BLACKSTAMP)
default y
config MEM_MT48LC32M8A2_75
@@ -366,6 +366,11 @@
depends on (BFIN518F_EZBRD)
default y
+config MEM_MT48H32M16LFCJ_75
+ bool
+ depends on (BFIN526_EZBRD)
+ default y
+
source "arch/blackfin/mach-bf518/Kconfig"
source "arch/blackfin/mach-bf527/Kconfig"
source "arch/blackfin/mach-bf533/Kconfig"
Modified: trunk/arch/blackfin/include/asm/mem_init.h (6777 => 6778)
--- trunk/arch/blackfin/include/asm/mem_init.h 2009-06-18 04:21:56 UTC (rev 6777)
+++ trunk/arch/blackfin/include/asm/mem_init.h 2009-06-18 04:32:04 UTC (rev 6778)
@@ -89,6 +89,85 @@
#endif
#endif
+/*
+ * The BF526-EZ-Board changed SDRAM chips between revisions,
+ * so we use below timings to accommodate both.
+ */
+#if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
+#if (CONFIG_SCLK_HZ > 119402985)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_8
+#define SDRAM_tRAS_num 8
+#define SDRAM_tRCD TRCD_2
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_7
+#define SDRAM_tRAS_num 7
+#define SDRAM_tRCD TRCD_2
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_6
+#define SDRAM_tRAS_num 6
+#define SDRAM_tRCD TRCD_2
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_5
+#define SDRAM_tRAS_num 5
+#define SDRAM_tRCD TRCD_2
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_4
+#define SDRAM_tRAS_num 4
+#define SDRAM_tRCD TRCD_2
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_4
+#define SDRAM_tRAS_num 4
+#define SDRAM_tRCD TRCD_1
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
+#define SDRAM_tRP TRP_2
+#define SDRAM_tRP_num 2
+#define SDRAM_tRAS TRAS_3
+#define SDRAM_tRAS_num 3
+#define SDRAM_tRCD TRCD_1
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
+#define SDRAM_tRP TRP_1
+#define SDRAM_tRP_num 1
+#define SDRAM_tRAS TRAS_3
+#define SDRAM_tRAS_num 3
+#define SDRAM_tRCD TRCD_1
+#define SDRAM_tWR TWR_2
+#endif
+#if (CONFIG_SCLK_HZ <= 29850746)
+#define SDRAM_tRP TRP_1
+#define SDRAM_tRP_num 1
+#define SDRAM_tRAS TRAS_2
+#define SDRAM_tRAS_num 2
+#define SDRAM_tRCD TRCD_1
+#define SDRAM_tWR TWR_2
+#endif
+#endif
+
#if defined(CONFIG_MEM_MT48LC16M8A2TG_75) || \
defined(CONFIG_MEM_MT48LC8M32B2B5_7)
/*SDRAM INFORMATION: */
@@ -109,7 +188,14 @@
#define SDRAM_CL CL_3
#endif
+#if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
+ /*SDRAM INFORMATION: */
+#define SDRAM_Tref 64 /* Refresh period in milliseconds */
+#define SDRAM_NRA 8192 /* Number of row addresses in SDRAM */
+#define SDRAM_CL CL_2
+#endif
+
#ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
/* Equation from section 17 (p17-46) of BF533 HRM */
#define mem_SDRRC (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num)
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