173bf8261STang Yun ping# RK3566 Release Note 273bf8261STang Yun ping 3*dd4a27beSZhihuan He## rk3566_ddr_{1056...324}MHz_v1.15.bin 4*dd4a27beSZhihuan He 5*dd4a27beSZhihuan He| Date | File | Build commit | Severity | 6*dd4a27beSZhihuan He| ---------- | ------------------------------------ | ------------ | --------- | 7*dd4a27beSZhihuan He| 2022-11-08 | rk3566_ddr_{1056...324}MHz_v1.15.bin | ec2fae0c96 | important | 8*dd4a27beSZhihuan He 9*dd4a27beSZhihuan He### Fixed 10*dd4a27beSZhihuan He 11*dd4a27beSZhihuan He| Index | Severity | Update | Issue description | Issue source | 12*dd4a27beSZhihuan He| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 13*dd4a27beSZhihuan He| 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 | - | 14*dd4a27beSZhihuan He 15*dd4a27beSZhihuan He------ 16*dd4a27beSZhihuan He 1773bf8261STang Yun ping## rk3566_ddr_{1056...324}MHz_v1.14.bin 1873bf8261STang Yun ping 1973bf8261STang Yun ping| Date | File | Build commit | Severity | 2073bf8261STang Yun ping| ---------- | :----------------------------------- | ------------ | --------- | 2173bf8261STang Yun ping| 2022-08-27 | rk3566_ddr_{1056...324}MHz_v1.14.bin | b1f29a2a6f | important | 2273bf8261STang Yun ping 2373bf8261STang Yun ping### Fixed 2473bf8261STang Yun ping 2573bf8261STang Yun ping| Index | Severity | Update | Issue description | Issue source | 2673bf8261STang Yun ping| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ | 27a9b7a7b5SJoseph Chen| 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. | - | 28a9b7a7b5SJoseph Chen| 2 | important | fix ddr4 528M stability problem | some DRAM DLL can't lock at 528M，DLL should be bypass for 528M | - | 2973bf8261STang Yun ping 3073bf8261STang Yun ping------ 31