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-rw-r--r--arch/mips/include/asm/mach-ralink/rt288x.h4
-rw-r--r--arch/mips/ralink/rt288x.c4
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-ralink/rt288x.h b/arch/mips/include/asm/mach-ralink/rt288x.h
index ad8b42dd2fcc..03ad716acb42 100644
--- a/arch/mips/include/asm/mach-ralink/rt288x.h
+++ b/arch/mips/include/asm/mach-ralink/rt288x.h
@@ -46,4 +46,8 @@
 
 #define CLKCFG_SRAM_CS_N_WDT		BIT(9)
 
+#define RT2880_SDRAM_BASE		0x08000000
+#define RT2880_MEM_SIZE_MIN		2
+#define RT2880_MEM_SIZE_MAX		128
+
 #endif
diff --git a/arch/mips/ralink/rt288x.c b/arch/mips/ralink/rt288x.c
index 1e0788e75af6..f87de1ab2198 100644
--- a/arch/mips/ralink/rt288x.c
+++ b/arch/mips/ralink/rt288x.c
@@ -136,4 +136,8 @@ void prom_soc_init(struct ralink_soc_info *soc_info)
 		name,
 		(id >> CHIP_ID_ID_SHIFT) & CHIP_ID_ID_MASK,
 		(id & CHIP_ID_REV_MASK));
+
+	soc_info->mem_base = RT2880_SDRAM_BASE;
+	soc_info->mem_size_min = RT2880_MEM_SIZE_MIN;
+	soc_info->mem_size_max = RT2880_MEM_SIZE_MAX;
 }