# RK3308 Release Note

## rk3308_bl31_cpu3_v1.00.elf

| Date       | File                       | Build commit | Severity |
| ---------- | :------------------------- | ------------ | -------- |
| 2023-03-16 | rk3308_bl31_cpu3_v1.00.elf | 5fb7b7229    | moderate |

### New

1. Support boot from CPU3.

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## rk3308_ddr_{589 ... 393}MHz_{uart2_m1, uart4_m0}_v2.07.bin

| Date       | File                                                       | Build commit | Severity |
| ---------- | :--------------------------------------------------------- | ------------ | -------- |
| 2022-11-29 | rk3308_ddr_{589 ... 393}MHz_{uart2_m1, uart4_m0}_v2.07.bin | 6ede97a868   | moderate |

### Fixed

| Index | Severity | Update                                                   | Issue description                                            | Issue source |
| ----- | -------- | -------------------------------------------------------- | ------------------------------------------------------------ | ------------ |
| 1     | moderate | Improve the stability of some DDR in RK3308B/H at 393MHz | When RK3308B/H is less than 451MHz, the value of read DQS DLL delay is inaccurately configured. As a result, some DDR may be unstable at 393MHz. | -            |

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## rk3308_bl31_{aarch32}_v2.26.elf

| Date       | File                            | Build commit | Severity  |
| ---------- | :------------------------------ | ------------ | --------- |
| 2022-09-28 | rk3308_bl31_{aarch32}_v2.26.elf | 0252d5c8f    | important |

### Fixed

| Index | Severity  | Update                                                       | Issue description                                            | Issue source |
| ----- | --------- | ------------------------------------------------------------ | ------------------------------------------------------------ | ------------ |
| 1     | important | Solve the wdt reset while system suspend.  Handle solution: bl31 disables pclk_wdt before sleep and resume it after wakeup. | The kernel can't disable secure pclk_wdt,  it results in wdt reset. | 375529       |

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## rk3308_bl32_v2.05.bin

| Date       | File                  | Build commit | Severity  |
| ---------- | :-------------------- | ------------ | --------- |
| 2022-09-16 | rk3308_bl32_v2.05.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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## rk3308_{miniloader, usbplug}_v1.39.bin

| Date       | File                                   | Build commit  | Severity |
| ---------- | :------------------------------------- | ------- | -------- |
| 2022-09-08 | rk3308_{miniloader, usbplug}_v1.39.bin | 97d7a6 | moderate |

### New

1. Check ftl super block 2nd page spare data.