ARM: AM335x: Enable DDR dynamic IO power down

This patch enables dynamically powering down the
IO receiver when not performing a read on boards using DDR3.
This optimizes both active and standby power consumption.
This bit is not set on EVM SK and EVM 1.5 and later boards.
Setting the same.

This has been tested on PG2.0 EVM1.5, EVM1.2, EVM-SK, BBB.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Satyanarayana, Sandhya <sandhya.satyanarayana@ti.com>

diff --git a/arch/arm/include/asm/arch-am33xx/ddr_defs.h b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
index c1777dfdc9604b63be2e932b86182fe7ff91b54a..fbe599d1ab36444cc62ab38609a26dca2149a7e4 100644 (file)
--- a/arch/arm/include/asm/arch-am33xx/ddr_defs.h
+++ b/arch/arm/include/asm/arch-am33xx/ddr_defs.h
@@ -43,7 +43,7 @@
 #define MT47H128M16RT25E_IOCTRL_VALUE          0x18B
 
 /* Micron MT41J128M16JT-125 */
-#define MT41J128MJT125_EMIF_READ_LATENCY       0x06
+#define MT41J128MJT125_EMIF_READ_LATENCY       0x100006
 #define MT41J128MJT125_EMIF_TIM1               0x0888A39B
 #define MT41J128MJT125_EMIF_TIM2               0x26337FDA
 #define MT41J128MJT125_EMIF_TIM3               0x501F830F
@@ -65,7 +65,7 @@
 #define MT41J256MJT125_EMIF_SDCFG              0x61C04B32
 
 /* Micron MT41J256M8HX-15E */
-#define MT41J256M8HX15E_EMIF_READ_LATENCY      0x06
+#define MT41J256M8HX15E_EMIF_READ_LATENCY      0x100006
 #define MT41J256M8HX15E_EMIF_TIM1              0x0888A39B
 #define MT41J256M8HX15E_EMIF_TIM2              0x26337FDA
 #define MT41J256M8HX15E_EMIF_TIM3              0x501F830F
@@ -97,7 +97,7 @@
 #define MT41K256M16HA125E_IOCTRL_VALUE         0x18B
 
 /* Micron MT41J512M8RH-125 on EVM v1.5 */
-#define MT41J512M8RH125_EMIF_READ_LATENCY      0x06
+#define MT41J512M8RH125_EMIF_READ_LATENCY      0x100006
 #define MT41J512M8RH125_EMIF_TIM1              0x0888A39B
 #define MT41J512M8RH125_EMIF_TIM2              0x26517FDA
 #define MT41J512M8RH125_EMIF_TIM3              0x501F84EF
@@ -113,7 +113,7 @@
 #define MT41J512M8RH125_IOCTRL_VALUE           0x18B
 
 /* Samsung K4B2G1646E-BIH9 */
-#define K4B2G1646EBIH9_EMIF_READ_LATENCY       0x07
+#define K4B2G1646EBIH9_EMIF_READ_LATENCY       0x100007
 #define K4B2G1646EBIH9_EMIF_TIM1               0x0AAAE51B
 #define K4B2G1646EBIH9_EMIF_TIM2               0x2A1D7FDA
 #define K4B2G1646EBIH9_EMIF_TIM3               0x501F83FF