On 11/4/19 5:33 PM, Fabio Estevam wrote:
Hi Giulio,
On Thu, Oct 31, 2019 at 9:11 AM Giulio Benetti giulio.benetti@benettiengineering.com wrote:
...in this register and the next one there are parameters like CKEOFF and ACT2PRE impossible to lead to classic tXXX sdram timing parameters. I've done this way inspired by stm32-sdram, but maybe U should go back using i.MXRT names(i.e. PRE2ACT instead of tRP) and list all possible useful registers in DM as I've done for tRP etc. What do you think?
I think it is OK to use the i.MXRT names.
Ok
#define TWR_1 0x0
+#define TWR_2 0x1 +#define TWR_3 0x2 +#define TWR_4 0x3 +#define TWR_5 0x4 +#define TWR_6 0x5 +#define TWR_7 0x6 +#define TWR_8 0x7 +#define TWR_9 0x8 +#define TWR_10 0x9 +#define TWR_11 0xA +#define TWR_12 0xB +#define TWR_13 0xC +#define TWR_14 0xD +#define TWR_15 0xE +#define TWR_16 0xF
+#endif
...is it ok listing every possible value for DM parameter? I mean, some of them would be 8-bit, this would mean having 256 cases, that sound very ugly to me.
It doesn't seem necessary to write all 256 cases. I would suggest to write the direct hex number.
Well, thanks a lot!
Best regards