ARM: OMAP4: Panda: rework DMM logic

Part of DMM logic is reuse from commit
47a4bea6 ("ARM: omap4: Update sdram
setting for panda rev A6") Which broke SDP4430 with ES2.3 (uses old
DDR).

So, to maintain support for newer DDR used in Panda ES rev B3, we
should, in addition to the commit
675cc77a ("ARM:OMAP4+: panda-es: Support
Rev B3 Elpida DDR2 RAM"), DDR timings, also do DMM configuration
specific to Panda.
Signed-off-by: NNishanth Menon <nm@ti.com>

arch/arm/include/asm/arch-omap4/sys_proto.h

@@ -22,6 +22,9 @@ extern const struct emif_regs emif_regs_elpida_200_mhz_2cs;
 extern const struct emif_regs emif_regs_elpida_380_mhz_1cs;
 extern const struct emif_regs emif_regs_elpida_400_mhz_1cs;
 extern const struct emif_regs emif_regs_elpida_400_mhz_2cs;
+extern const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2;
+extern const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2;
+extern const struct dmm_lisa_map_regs ma_lisa_map_2G_x_2_x_2;
 struct omap_sysinfo {
 	char *board_string;
 };

board/ti/panda/panda.c

@@ -180,6 +180,22 @@ void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
 	else
 		*regs = &emif_regs_elpida_400_mhz_1cs;
 }
+
+void emif_get_dmm_regs(const struct dmm_lisa_map_regs
+						**dmm_lisa_regs)
+{
+	u32 omap_rev = omap_revision();
+
+	if (omap_rev == OMAP4430_ES1_0)
+		*dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
+	else if (omap_rev == OMAP4430_ES2_3)
+		*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
+	else if (omap_rev < OMAP4460_ES1_0)
+		*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
+	else
+		*dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
+}
+
 #endif
 
 /**