Wolfgang Denk wrote:
> Tried fixing NAND support for the at91rm9200dk board; untested.
> Disabled NAND support in the csb637 board config file.
>
Has anyone tested this? Is NAND working with AT91RM9200DK?
I'm currently trying to get it working with U-Boot-1.3.4 but with no
success. I did notice this strange setting in:
board/atmel/at91rm9200dk/at91rm9200dk.c
115 /* enable the SMOE line PC0=SMCE, A21=CLE, A22=ALE */
116 *AT91C_PIOC_ASR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE |
117 AT91C_PC3_BFBAA_SMWE;
118 *AT91C_PIOC_PDR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE |
119 AT91C_PC3_BFBAA_SMWE;
AFAIK, PC0 (SMCS/SMCE) is supposed to be a GPIO and not a peripheral
because it is controlled manually.
If you look in include/configs/at91rm9200dk.h you will see that PC0 is
controlled via a macro.
136 #define NAND_DISABLE_CE(nand) do { *AT91C_PIOC_SODR =
AT91C_PIO_PC0;} while(0)
137 #define NAND_ENABLE_CE(nand) do { *AT91C_PIOC_CODR =
AT91C_PIO_PC0;} while(0)
Has anyone ever used the NAND/Smartmedia on a DK with U-Boot?
Aras
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