diff options
-rw-r--r-- | firmware/target/arm/as3525/system-as3525.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/firmware/target/arm/as3525/system-as3525.c b/firmware/target/arm/as3525/system-as3525.c index 60fe7032e6..ecb9736f78 100644 --- a/firmware/target/arm/as3525/system-as3525.c +++ b/firmware/target/arm/as3525/system-as3525.c | |||
@@ -209,9 +209,11 @@ static void sdram_init(void) | |||
209 | 209 | ||
210 | MPMC_DYNAMIC_CONTROL = 0x82; /* SDRAM MODE, MPMCCLKOUT runs continuously */ | 210 | MPMC_DYNAMIC_CONTROL = 0x82; /* SDRAM MODE, MPMCCLKOUT runs continuously */ |
211 | 211 | ||
212 | /* this part is required, if you know why please explain */ | 212 | /* program the SDRAM mode register */ |
213 | unsigned int tmp = *(volatile unsigned int*)(0x30000000+0x2300*MEM); | 213 | /* FIXME: details the exact settings of mode register */ |
214 | (void)tmp; /* we just need to read from this location */ | 214 | asm volatile( |
215 | "ldr r4, [%0]\n" | ||
216 | : : "p"(0x30000000+0x2300*MEM) : "r4"); | ||
215 | 217 | ||
216 | MPMC_DYNAMIC_CONTROL = 0x2; /* SDRAM NORMAL, MPMCCLKOUT runs continuously */ | 218 | MPMC_DYNAMIC_CONTROL = 0x2; /* SDRAM NORMAL, MPMCCLKOUT runs continuously */ |
217 | 219 | ||