1# RK3566 Release Note 2 3## rk3566_ddr_1056MHz_eyescan_v1.16.bin 4 5| Date | File | Build commit | Severity | 6| ---------- | :----------------------------------- | ------------ | --------- | 7| 2023-04-19 | rk3566_ddr_1056MHz_eyescan_v1.16.bin | b9c108a4eb | important | 8 9### New 10 111. Add RK3566 2D eye scan support. 12 13------ 14 15## rk3566_ddr_{1056...324}MHz_v1.16.bin 16 17| Date | File | Build commit | Severity | 18| ---------- | ------------------------------------ | ------------ | --------- | 19| 2022-11-16 | rk3566_ddr_{1056...324}MHz_v1.16.bin | 6f71c736ce | important | 20 21### New 22 231. RK3568J/RK3568M use 1/2tREFI except LPDDR4/LPDDR4x. LPDDR4/LPDDR4x use derate mode. 242. TREFI, pageclose configurable by ddrbin tool. 253. Improve DDR4 performance. 26 27### Fixed 28 29| Index | Severity | Update | Issue description | Issue source | 30| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 31| 1 | important | To solve the instability problem of some ddr4 when DDR run in 528MHz. | When DDR4 run in 528MHz, the system would unstable, causing a crash and restart | - | 32| 2 | important | To solve 4GB ECC board Init fail bug | 4GB DDR4 board may crash in ddrbin | | 33 34------ 35 36## rk3566_ddr_{1056...324}MHz_v1.15.bin 37 38| Date | File | Build commit | Severity | 39| ---------- | ------------------------------------ | ------------ | --------- | 40| 2022-11-08 | rk3566_ddr_{1056...324}MHz_v1.15.bin | ec2fae0c96 | important | 41 42### Fixed 43 44| Index | Severity | Update | Issue description | Issue source | 45| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 46| 1 | important | To solve the instability problem of some chips when DDR run in 324MHz. | When DDR run in 324MHz, the system would unstable, causing a crash and restart | - | 47 48------ 49 50## rk3566_ddr_{1056...324}MHz_v1.14.bin 51 52| Date | File | Build commit | Severity | 53| ---------- | :----------------------------------- | ------------ | --------- | 54| 2022-08-27 | rk3566_ddr_{1056...324}MHz_v1.14.bin | b1f29a2a6f | important | 55 56### Fixed 57 58| Index | Severity | Update | Issue description | Issue source | 59| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ | 60| 1 | moderate | fix Fix set of t_xs_x32, t_xs_abort_x32 and t_xs_fast_x32 | Fix set of t_xs_x32, t_xs_abort_x32 and t_xs_fast_x32.This bug may lead to some low density dram(128M) fail. | - | 61| 2 | important | fix ddr4 528M stability problem | some DRAM DLL can't lock at 528M，DLL should be bypass for 528M | - | 62 63------ 64