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authorMichael Hennerich <michael.hennerich@analog.com>2008-07-14 04:51:57 -0400
committerBryan Wu <cooloney@kernel.org>2008-07-14 04:51:57 -0400
commit68e2fc78e5055740126df8eab0d31005495756c9 (patch)
tree0d43976ff1d3ae8535445f9bcb1687f657f33337 /include/asm-blackfin/mach-bf561
parent260d5d3517c67c5b68b4e28c5d3e1e3b73976a90 (diff)
Blackfin arch: Fix bug - Kernel does not boot if re-program clocks
Don't write conflicting data to EBIU_SDBCTL after the SDRAM is configured. This can cause data corruption, since we might change SDRAM row and column addressing modes. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'include/asm-blackfin/mach-bf561')
-rw-r--r--include/asm-blackfin/mach-bf561/mem_init.h27
1 files changed, 0 insertions, 27 deletions
diff --git a/include/asm-blackfin/mach-bf561/mem_init.h b/include/asm-blackfin/mach-bf561/mem_init.h
index 439a5895b346..e163260bca18 100644
--- a/include/asm-blackfin/mach-bf561/mem_init.h
+++ b/include/asm-blackfin/mach-bf561/mem_init.h
@@ -131,33 +131,6 @@
131#define SDRAM_CL CL_3 131#define SDRAM_CL CL_3
132#endif 132#endif
133 133
134#if (CONFIG_MEM_SIZE == 128)
135#define SDRAM_SIZE EB0_SZ_128
136#endif
137#if (CONFIG_MEM_SIZE == 64)
138#define SDRAM_SIZE EB0_SZ_64
139#endif
140#if ( CONFIG_MEM_SIZE == 32)
141#define SDRAM_SIZE EB0_SZ_32
142#endif
143#if (CONFIG_MEM_SIZE == 16)
144#define SDRAM_SIZE EB0_SZ_16
145#endif
146#if (CONFIG_MEM_ADD_WIDTH == 11)
147#define SDRAM_WIDTH EB0_CAW_11
148#endif
149#if (CONFIG_MEM_ADD_WIDTH == 10)
150#define SDRAM_WIDTH EB0_CAW_10
151#endif
152#if (CONFIG_MEM_ADD_WIDTH == 9)
153#define SDRAM_WIDTH EB0_CAW_9
154#endif
155#if (CONFIG_MEM_ADD_WIDTH == 8)
156#define SDRAM_WIDTH EB0_CAW_8
157#endif
158
159#define mem_SDBCTL (SDRAM_WIDTH | SDRAM_SIZE | EB0_E)
160
161/* Equation from section 17 (p17-46) of BF533 HRM */ 134/* Equation from section 17 (p17-46) of BF533 HRM */
162#define mem_SDRRC (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num) 135#define mem_SDRRC (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num)
163 136