14909cfb1STang Yun ping# RK3568 Release Note 24909cfb1STang Yun ping 3*6dff3132SHisping Lin## rk3568_bl32_v2.09.bin 4*6dff3132SHisping Lin 5*6dff3132SHisping Lin| Date | File | Build commit | Severity | 6*6dff3132SHisping Lin| ---------- | :-------------------- | ------------ | --------- | 7*6dff3132SHisping Lin| 2022-09-16 | rk3568_bl32_v2.09.bin | d84087907 | important | 8*6dff3132SHisping Lin 9*6dff3132SHisping Lin### Fixed 10*6dff3132SHisping Lin 11*6dff3132SHisping Lin| Index | Severity | Update | Issue description | Issue source | 12*6dff3132SHisping Lin| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 13*6dff3132SHisping Lin| 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 | - | 14*6dff3132SHisping Lin 15*6dff3132SHisping Lin------ 16*6dff3132SHisping Lin 174909cfb1STang Yun ping## rk3568_ddr_{1560...324}MHz_v1.14.bin 184909cfb1STang Yun ping 194909cfb1STang Yun ping| Date | File | Build commit | Severity | 204909cfb1STang Yun ping| ---------- | :----------------------------------- | ------------ | --------- | 214909cfb1STang Yun ping| 2022-08-27 | rk3568_ddr_{1560...324}MHz_v1.14.bin | b1f29a2a6f | important | 224909cfb1STang Yun ping 234909cfb1STang Yun ping### Fixed 244909cfb1STang Yun ping 254909cfb1STang Yun ping| Index | Severity | Update | Issue description | Issue source | 264909cfb1STang Yun ping| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ | 27a9b7a7b5SJoseph Chen| 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 . | - | 28a9b7a7b5SJoseph Chen| 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. | - | 29a9b7a7b5SJoseph Chen| 3 | important | fix ddr4 528M stability problem | some DRAM DLL can't lock at 528M，DLL should be bypass for 528M | - | 30a9b7a7b5SJoseph Chen| | important | fix ddr4 1560M stability problem | some 2 rank DDR4 PCB DQS/DQ slew rate should be set to 0x0 when running at1560MHz. | - | 314909cfb1STang Yun ping 324909cfb1STang Yun ping------ 33