[U-Boot] [PATCH] board/t1040qds: Add memory reset control

[York Sun]

On Dec 25, 2013, at 10:48 PM, Prabhakar Kushwaha wrote:

> 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 at 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) \
> -- 
> 1.7.9.5



Prabhakar,

Your patch doesn't do what the commit message says. It only enables this feature for T1040QDS board.

York