[U-Boot] [PATCH 03/10] mx23evk: Adjust DRAM control register to use full 128MB of RAM

[Otavio Salvador]

On Wed, Jan 30, 2013 at 12:12 PM, Marek Vasut <marex at denx.de> wrote:
> Dear Otavio Salvador,
>
>> Adjust HW_DRAM_CTL14 to enable the chip selects to allow usage of full
>> 128MB of RAM.
>>
>> Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
>
> Just enable the full set for all in the generic memory register set (dram_vals)?

Per datasheet description it shouldn't be done for LQFP; so the safest
setting is to the default we're using as it will work for new boards
and the chip select can be adjusted when need.

>> ---
>>  board/freescale/mx23evk/spl_boot.c | 10 ++++++++++
>>  1 file changed, 10 insertions(+)
>>
>> diff --git a/board/freescale/mx23evk/spl_boot.c
>> b/board/freescale/mx23evk/spl_boot.c index 6007433..b6f4e7e 100644
>> --- a/board/freescale/mx23evk/spl_boot.c
>> +++ b/board/freescale/mx23evk/spl_boot.c
>> @@ -98,6 +98,16 @@ const iomux_cfg_t iomux_setup[] = {
>>               (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
>>  };
>>
>> +#define HW_DRAM_CTL14        (0x38 >> 2)
>> +#define CS_MAP               0x3
>> +#define INTAREF              0x2
>> +#define HW_DRAM_CTL14_CONFIG (INTAREF << 8 | CS_MAP)
>> +
>> +void mxs_adjust_memory_params(uint32_t *dram_vals)
>> +{
>> +     dram_vals[HW_DRAM_CTL14] = HW_DRAM_CTL14_CONFIG;
>> +}
>> +
>>  void board_init_ll(void)
>>  {
>>       mxs_common_spl_init(iomux_setup, ARRAY_SIZE(iomux_setup));
>
> Best regards,
> Marek Vasut



--
Otavio Salvador                             O.S. Systems
E-mail: otavio at ossystems.com.br  http://www.ossystems.com.br
Mobile: +55 53 9981-7854              http://projetos.ossystems.com.br