JEDEC spec requires the clocks to be stable before deasserting reset signal for RDIMMs. Clocks start when any chip select is enabled and clock control register is set. This patch also adds the interface to toggle memory reset signal if needed by the boards.
Signed-off-by: Prabhakar Kushwaha prabhakar@freescale.com --- board/freescale/t1040qds/t1040qds.c | 5 +++++ include/configs/T1040QDS.h | 1 + 2 files changed, 6 insertions(+)
diff --git a/board/freescale/t1040qds/t1040qds.c b/board/freescale/t1040qds/t1040qds.c index 2aa176c..de3ea5c 100644 --- a/board/freescale/t1040qds/t1040qds.c +++ b/board/freescale/t1040qds/t1040qds.c @@ -239,3 +239,8 @@ void qixis_dump_switch(void) printf("SW%d = (0x%02x)\n", i, QIXIS_READ(cms[1])); } } + +int board_need_mem_reset(void) +{ + return 1; +} diff --git a/include/configs/T1040QDS.h b/include/configs/T1040QDS.h index 1cfbf06..7bae2c8 100644 --- a/include/configs/T1040QDS.h +++ b/include/configs/T1040QDS.h @@ -232,6 +232,7 @@ unsigned long get_board_ddr_clk(void); #define QIXIS_RCFG_CTL_RECONFIG_IDLE 0x20 #define QIXIS_RCFG_CTL_RECONFIG_START 0x21 #define QIXIS_RCFG_CTL_WATCHDOG_ENBLE 0x08 +#define QIXIS_RST_FORCE_MEM 0x01
#define CONFIG_SYS_CSPR3_EXT (0xf) #define CONFIG_SYS_CSPR3 (CSPR_PHYS_ADDR(QIXIS_BASE_PHYS) \