1# RK3568 Release Note 2 3## rk3568_bl31_v1.36.elf 4 5| Date | File | Build commit | Severity | 6| ---------- | --------------------- | ------------ | --------- | 7| 2022-11-08 | rk3568_bl31_v1.36.elf | 2c8be93f9 | important | 8 9### Fixed 10 11| Index | Severity | Update | Issue description | Issue source | 12| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 13| 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 15------ 16 17## rk356x_usbplug_v1.16.bin 18 19| Date | File | Build commit | Severity | 20| ---------- | :----------------------- | ------------ | -------- | 21| 2022-11-02 | rk356x_usbplug_v1.16.bin | eaaeb1 | moderate | 22 23### New 24 251. Support more spiflash 26 27------ 28 29## rk3568_bl31_v1.35.elf 30 31| Date | File | Build commit | Severity | 32| ---------- | :-------------------- | ------------ | --------- | 33| 2022-10-24 | rk3568_bl31_v1.35.elf | cddd6f52e | important | 34 35### Fixed 36 37| Index | Severity | Update | Issue description | Issue source | 38| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ | 39| 1 | important | fix the suspend/resume stability problem, the PCIE suspend fail. | Linux kernel doesn't save/restore GICR, so we need do it if vdd_logic is off in suspend. | - | 40 41------ 42 43## rk356{x_usbplug, 8_miniloader_spinand}_v1.15.bin 44 45| Date | File | Build commit | Severity | 46| ---------- | :----------------------------------------------- | ------------ | -------- | 47| 2022-09-26 | rk356{x_usbplug, 8_miniloader_spinand}_v1.15.bin | 65048d1 | moderate | 48 49### New 50 511. Support more spiflash 52 53------ 54 55## rk3568_bl32_v2.09.bin 56 57| Date | File | Build commit | Severity | 58| ---------- | :-------------------- | ------------ | --------- | 59| 2022-09-16 | rk3568_bl32_v2.09.bin | d84087907 | important | 60 61### Fixed 62 63| Index | Severity | Update | Issue description | Issue source | 64| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ | 65| 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 | - | 66 67------ 68 69## rk3568_ddr_{1560...324}MHz_v1.14.bin 70 71| Date | File | Build commit | Severity | 72| ---------- | :----------------------------------- | ------------ | --------- | 73| 2022-08-27 | rk3568_ddr_{1560...324}MHz_v1.14.bin | b1f29a2a6f | important | 74 75### Fixed 76 77| Index | Severity | Update | Issue description | Issue source | 78| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ | 79| 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 . | - | 80| 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. | - | 81| 3 | important | fix ddr4 528M stability problem | some DRAM DLL can't lock at 528M，DLL should be bypass for 528M | - | 82| | important | fix ddr4 1560M stability problem | some 2 rank DDR4 PCB DQS/DQ slew rate should be set to 0x0 when running at1560MHz. | - | 83 84------ 85