1# RK3568 Release Note 2 3## rk356{x_usbplug, 8_miniloader_spinand}_v1.15.bin 4 5| Date | File | Build commit | Severity | 6| ---------- | :----------------------------------------------- | ------------ | -------- | 7| 2022-09-26 | rk356{x_usbplug, 8_miniloader_spinand}_v1.15.bin | 65048d1 | moderate | 8 9### New 10 111. Support more spiflash 12 13------ 14 15## rk3568_bl32_v2.09.bin 16 17| Date | File | Build commit | Severity | 18| ---------- | :-------------------- | ------------ | --------- | 19| 2022-09-16 | rk3568_bl32_v2.09.bin | d84087907 | important | 20 21### Fixed 22 23| Index | Severity | Update | Issue description | Issue source | 24| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 25| 1 | important | Solve the problem that OPTEE is stuck during startup when printing is closed | User use /rkbin/tools/ddrbin_tool to close printing , then rk_atags will notify OPTEE to disable printing, When OPTEE starts, it will be stuck and unable to enter U-Boot | - | 26 27------ 28 29## rk3568_ddr_{1560...324}MHz_v1.14.bin 30 31| Date | File | Build commit | Severity | 32| ---------- | :----------------------------------- | ------------ | --------- | 33| 2022-08-27 | rk3568_ddr_{1560...324}MHz_v1.14.bin | b1f29a2a6f | important | 34 35### Fixed 36 37| Index | Severity | Update | Issue description | Issue source | 38| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ | 39| 1 | important | fix some LPDDR4 stability problem | CXMT CXDB5CCAM-MK instability for 1560MHz at LPDDR4 mode. Fix this issue by set CLK/CA slew rate from 0xf to 0x0 . | - | 40| 2 | 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. | - | 41| 3 | important | fix ddr4 528M stability problem | some DRAM DLL can't lock at 528M，DLL should be bypass for 528M | - | 42| | important | fix ddr4 1560M stability problem | some 2 rank DDR4 PCB DQS/DQ slew rate should be set to 0x0 when running at1560MHz. | - | 43 44------ 45