ARM: at91: sfr: implement DDR input buffers open function

[oweals/u-boot.git] / arch / arm / mach-at91 / atmel_sfr.c

diff --git a/arch/arm/mach-at91/atmel_sfr.c b/arch/arm/mach-at91/atmel_sfr.c
index 07bd8abe939313cd6644a5222545dc0965917a29..13cfba0ba0c0e9153c442ec29846bfbf4624cd07 100644 (file)
--- a/arch/arm/mach-at91/atmel_sfr.c
+++ b/arch/arm/mach-at91/atmel_sfr.c
@@ -29,3 +29,14 @@ void configure_2nd_sram_as_l2_cache(void)
 }
 #endif
 
+void configure_ddrcfg_input_buffers(bool open)
+{
+       struct atmel_sfr *sfr = (struct atmel_sfr *)ATMEL_BASE_SFR;
+
+       if (open)
+               writel(ATMEL_SFR_DDRCFG_FDQIEN | ATMEL_SFR_DDRCFG_FDQSIEN,
+                      &sfr->ddrcfg);
+       else
+               writel(0, &sfr->ddrcfg);
+}
+