ppc4xx: lwmon5: Only use one CS (rank) in DDR2 configuration

This patch fixes a problem spotted by Mikhail Zolotaryov on Sequoia with
the DDR2 configuration to only use one CS (rank). As this code is most
likely copied from the original Sequoia version, this error was copied
as well.

This patch also removes some dead code.

Signed-off-by: Stefan Roese <sr@denx.de>

board/lwmon5/sdram.c

@@ -160,49 +160,6 @@ static void program_ecc(u32 start_address,
  ************************************************************************/
 phys_size_t initdram (int board_type)
 {
-#if 0 /* test-only: will remove this define later, when ECC problems are solved! */
-	/* CL=3 */
-	mtsdram(DDR0_02, 0x00000000);
-
-	mtsdram(DDR0_00, 0x0000190A);
-	mtsdram(DDR0_01, 0x01000000);
-	mtsdram(DDR0_03, 0x02030603); /* A suitable burst length was taken. CAS is right for our board */
-
-	mtsdram(DDR0_04, 0x0A030300);
-	mtsdram(DDR0_05, 0x02020308);
-	mtsdram(DDR0_06, 0x0103C812);
-	mtsdram(DDR0_07, 0x00090100);
-	mtsdram(DDR0_08, 0x02c80001);
-	mtsdram(DDR0_09, 0x00011D5F);
-	mtsdram(DDR0_10, 0x00000300);
-	mtsdram(DDR0_11, 0x000CC800);
-	mtsdram(DDR0_12, 0x00000003);
-	mtsdram(DDR0_14, 0x00000000);
-	mtsdram(DDR0_17, 0x1e000000);
-	mtsdram(DDR0_18, 0x1e1e1e1e);
-	mtsdram(DDR0_19, 0x1e1e1e1e);
-	mtsdram(DDR0_20, 0x0B0B0B0B);
-	mtsdram(DDR0_21, 0x0B0B0B0B);
-#ifdef CONFIG_DDR_ECC
-	mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC	*/
-#else
-	mtsdram(DDR0_22, 0x00267F0B);
-#endif
-
-	mtsdram(DDR0_23, 0x01000000);
-	mtsdram(DDR0_24, 0x01010001);
-
-	mtsdram(DDR0_26, 0x2D93028A);
-	mtsdram(DDR0_27, 0x0784682B);
-
-	mtsdram(DDR0_28, 0x00000080);
-	mtsdram(DDR0_31, 0x00000000);
-	mtsdram(DDR0_42, 0x01000006);
-
-	mtsdram(DDR0_43, 0x030A0200);
-	mtsdram(DDR0_44, 0x00000003);
-	mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */
-#else
 	/* CL=4 */
 	mtsdram(DDR0_02, 0x00000000);
 
@@ -216,7 +173,7 @@ phys_size_t initdram (int board_type)
 	mtsdram(DDR0_07, 0x00090100);
 	mtsdram(DDR0_08, 0x03c80001);
 	mtsdram(DDR0_09, 0x00011D5F);
-	mtsdram(DDR0_10, 0x00000300);
+	mtsdram(DDR0_10, 0x00000100);
 	mtsdram(DDR0_11, 0x000CC800);
 	mtsdram(DDR0_12, 0x00000003);
 	mtsdram(DDR0_14, 0x00000000);
@@ -244,7 +201,6 @@ phys_size_t initdram (int board_type)
 	mtsdram(DDR0_43, 0x050A0200);
 	mtsdram(DDR0_44, 0x00000005);
 	mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */
-#endif
 
 	denali_wait_for_dlllock();