# RK3568 Release Note

## rk356{x_usbplug, 8_miniloader_spinand}_v1.15.bin

| Date       | File                                             | Build commit | Severity |
| ---------- | :----------------------------------------------- | ------------ | -------- |
| 2022-09-26 | rk356{x_usbplug, 8_miniloader_spinand}_v1.15.bin | 65048d1      | moderate |

### New

1. Support more spiflash

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## rk3568_bl32_v2.09.bin

| Date       | File                  | Build commit | Severity  |
| ---------- | :-------------------- | ------------ | --------- |
| 2022-09-16 | rk3568_bl32_v2.09.bin | d84087907    | important |

### Fixed

| Index | Severity  | Update                                                       | Issue description                                            | Issue source |
| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ |
| 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 | -            |

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## rk3568_ddr_{1560...324}MHz_v1.14.bin

| Date       | File                                 | Build commit | Severity  |
| ---------- | :----------------------------------- | ------------ | --------- |
| 2022-08-27 | rk3568_ddr_{1560...324}MHz_v1.14.bin | b1f29a2a6f   | important |

### Fixed

| Index | Severity  | Update                                                    | Issue description                                            | Issue source |
| ----- | --------- | --------------------------------------------------------- | ------------------------------------------------------------ | ------------ |
| 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 . | -         |
| 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. | -         |
| 3     | important | fix ddr4 528M stability problem                           | some DRAM DLL can't lock at 528M，DLL should be bypass for 528M | -         |
|       | important | fix ddr4 1560M stability problem                          | some 2 rank DDR4 PCB DQS/DQ slew rate should be set to 0x0 when running at1560MHz. | -         |

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