X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Fasm-avr32%2Fsdram.h;h=7bdefc1fd247b1e619d6615fb95fed54eea9f18a;hb=a23e277c4a3a2bbc42d237aae29da3a8971e757f;hp=833af6e6ad160c1bbf05e1dd7c905d57972114d2;hpb=95107b7c028806919630bf02c653aa8f4f867c94;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/asm-avr32/sdram.h b/include/asm-avr32/sdram.h
index 833af6e..7bdefc1 100644
--- a/include/asm-avr32/sdram.h
+++ b/include/asm-avr32/sdram.h
@@ -22,15 +22,32 @@
 #ifndef __ASM_AVR32_SDRAM_H
 #define __ASM_AVR32_SDRAM_H
 
-struct sdram_info {
-	unsigned long phys_addr;
-	unsigned int row_bits, col_bits, bank_bits;
-	unsigned int cas, twr, trc, trp, trcd, tras, txsr;
+struct sdram_config {
+	/* Number of data bits. */
+	enum {
+		SDRAM_DATA_16BIT,
+		SDRAM_DATA_32BIT,
+	} data_bits;
+
+	/* Number of address bits */
+	uint8_t row_bits, col_bits, bank_bits;
+
+	/* SDRAM timings in cycles */
+	uint8_t cas, twr, trc, trp, trcd, tras, txsr;
 
 	/* SDRAM refresh period in cycles */
 	unsigned long refresh_period;
 };
 
-extern unsigned long sdram_init(const struct sdram_info *info);
+/*
+ * Attempt to initialize the SDRAM controller using the specified
+ * parameters. Return the expected size of the memory area based on
+ * the number of address and data bits.
+ *
+ * The caller should verify that the configuration is correct by
+ * running a memory test, e.g. get_ram_size().
+ */
+extern unsigned long sdram_init(void *sdram_base,
+			const struct sdram_config *config);
 
 #endif /* __ASM_AVR32_SDRAM_H */