[U-Boot] [PATCH v2 03/10] mx23evk: Adjust DRAM control register to use full 128MB of RAM

Otavio Salvador
2013-02-13T21:21:43Z

On Wed, Feb 13, 2013 at 7:13 PM, Marek Vasut <marex@denx.de> wrote:
> Dear Otavio Salvador,
>
>> Adjust HW_DRAM_CTL14 to enable the chip selects to allow usage of full
>> 128MB of RAM.
>
> Why can this not be enabled globally?

Because it breaks mx23_olinuxino; it is a good reason for me.

>> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
>> ---
>> Changes in v2: None
>>
>> 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