i.MX ProcessorsのトピックRe: uboot ddr customization

uboot ddr customization

vladimirchernin — Thu, 12 Apr 2018 14:54:20 GMT

Hi!

Our custom board based on IMX6ULL evk and it uses LPDDR2 2gb

we need to custom our uboot and linux

in the mx6ull_customboard.h (uboot )

i changed the size of ddr

#define PHYS_SDRAM_SIZE SZ_2G // for 2 Giga

should i change next parameters

#define CONFIG_NR_DRAM_BANKS 1 // my memory has 8 bank
#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR

should i change these 2 params numbers of banks and physical address?

Thanks

Re: uboot ddr customization

igorpadykov — Thu, 12 Apr 2018 23:10:10 GMT

Hi Vladimir

if board is based on nxp evk design I believe these settings

can be left in default state. It is necessary to run ddr test

i.MX6/7 DDR Stress Test Tool V2.80

and change uboot/../mx6ullevk/imximage_lpddr2.cfg with new calibration

coefficients found from test.

Best regards
igor
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