Merge branch 'master' of git://www.denx.de/git/u-boot-mpc83xx

[oweals/u-boot.git] / include / configs / TQM866M.h

diff --git a/include/configs/TQM866M.h b/include/configs/TQM866M.h
index 76facc429586e3e8142c45df667480f4eb77cb56..d033875dc5bd6ac1ac162c00a493c09e1abccb00 100644 (file)
--- a/include/configs/TQM866M.h
+++ b/include/configs/TQM866M.h
@@ -61,7 +61,7 @@
 #define CONFIG_BOARD_TYPES     1       /* support board types          */
 
 #define CONFIG_PREBOOT "echo;" \
-       "echo Type \"run flash_nfs\" to mount root filesystem over NFS;" \
+       "echo Type \\\"run flash_nfs\\\" to mount root filesystem over NFS;" \
        "echo"
 
 #undef CONFIG_BOOTARGS
@@ -232,11 +232,14 @@
 /*-----------------------------------------------------------------------
  * FLASH organization
  */
-#define CFG_MAX_FLASH_BANKS    2       /* max number of memory banks           */
-#define CFG_MAX_FLASH_SECT     256     /* max number of sectors on one chip    */
-
-#define CFG_FLASH_ERASE_TOUT   120000  /* Timeout for Flash Erase (in ms)      */
-#define CFG_FLASH_WRITE_TOUT   500     /* Timeout for Flash Write (in ms)      */
+/* use CFI flash driver */
+#define CFG_FLASH_CFI          1       /* Flash is CFI conformant */
+#define CFG_FLASH_CFI_DRIVER   1       /* Use the common driver */
+#define CFG_FLASH_BANKS_LIST   { CFG_FLASH_BASE }
+#define CFG_FLASH_EMPTY_INFO
+#define CFG_FLASH_USE_BUFFER_WRITE     1
+#define CFG_MAX_FLASH_BANKS    1       /* max number of memory banks */
+#define CFG_MAX_FLASH_SECT     256     /* max number of sectors on one chip */
 
 #define CFG_ENV_IS_IN_FLASH    1
 #define CFG_ENV_OFFSET         0x40000 /*   Offset   of Environment Sector     */
@@ -426,26 +429,30 @@
 #define CFG_PTA_PER_CLK        ((4096 * 64 * 1000) / (4 * 64))
 
 /*
- * Memory Periodic Timer Prescaler
- * Periodic timer for refresh, start with refresh rate for 40 MHz clock
- * (CFG_8xx_CPUCLK_MIN / CFG_PTA_PER_CLK)
+ * Periodic timer (MAMR[PTx]) for 4 * 7.8 us refresh (= 31.2 us per quad)
+ *
+ *                        CPUclock(MHz) * 31.2
+ * CFG_MAMR_PTA = -----------------------------------     with DFBRG = 0
+ *                2^(2*SCCR[DFBRG]) * MPTPR_PTP_DIV16
+ *
+ * CPU clock =  15 MHz:  CFG_MAMR_PTA =  29   ->  4 * 7.73 us
+ * CPU clock =  50 MHz:  CFG_MAMR_PTA =  97   ->  4 * 7.76 us
+ * CPU clock =  66 MHz:  CFG_MAMR_PTA = 128   ->  4 * 7.75 us
+ * CPU clock = 133 MHz:  CFG_MAMR_PTA = 255   ->  4 * 7.67 us
+ *
+ * Value 97 is for 4 * 7.8 us at 50 MHz. So the refresh cycle requirement will
+ * be met also in the default configuration, i.e. if environment variable
+ * 'cpuclk' is not set.
  */
-#define CFG_MAMR_PTA           39
+#define CFG_MAMR_PTA           97
 
 /*
- * For 16 MBit, refresh rates could be 31.3 us
- * (= 64 ms / 2K = 125 / quad bursts).
- * For a simpler initialization, 15.6 us is used instead.
- *
- * #define CFG_MPTPR_2BK_2K    MPTPR_PTP_DIV32         for 2 banks
- * #define CFG_MPTPR_1BK_2K    MPTPR_PTP_DIV64         for 1 bank
+ * Memory Periodic Timer Prescaler Register (MPTPR) values.
  */
-#define CFG_MPTPR_2BK_4K       MPTPR_PTP_DIV16         /* setting for 2 banks  */
-#define CFG_MPTPR_1BK_4K       MPTPR_PTP_DIV32         /* setting for 1 bank   */
-
-/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit                */
-#define CFG_MPTPR_2BK_8K       MPTPR_PTP_DIV8          /* setting for 2 banks  */
-#define CFG_MPTPR_1BK_8K       MPTPR_PTP_DIV16         /* setting for 1 bank   */
+/* 4 * 7.8 us refresh (= 31.2 us per quad) at 50 MHz and PTA = 97 */
+#define CFG_MPTPR_2BK_4K       MPTPR_PTP_DIV16
+/* 4 * 3.9 us refresh (= 15.6 us per quad) at 50 MHz and PTA = 97 */
+#define CFG_MPTPR_2BK_8K       MPTPR_PTP_DIV8
 
 /*
  * MAMR settings for SDRAM