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| Intermittent RAM issues causing kernel panic https://www.8devices.com/community/viewtopic.php?f=13&t=1140 |
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| Author: | codehero [ 16 Jul 2018, 04:45 ] |
| Post subject: | Intermittent RAM issues causing kernel panic |
I am having very intermittent stability issues using both Caraboot and pepe-2k. Both u-boot versions assume a tRAS value of 40 ns This was true when the Carambola2 module used the W9751G6JB25 DDR2 module. However, I popped off the cap of a newer Carambola2 module and it now uses W9751G6KB25 According to line in include/configs/carambola2.h #define CFG_DDR_CONFIG_VAL 0x7fbc8cd0 tRAS is still specified at 40 ns Should the default safe value be at 45 ns??? See datasheets Page 45 of http://digichip.ru/datasheet/PDF/df799b ... G6JB25.pdf Page 45 of https://www.winbond.com/resource-files/ ... g6kbg1.pdf |
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