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Lee Lup Yuen 2023-10-19 10:36:46 +08:00
parent dbd1fcd565
commit 0c627714c9
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@ -7956,20 +7956,75 @@ From [DesignWare DW_apb_i2c Databook](https://github.com/lupyuen/nuttx-star64/bl
- IC_CON (Offset 0x00): I2C Control
Actual Value: 0x7f
- IC_TAR (Offset 0x04): I2C Target Address
Default Value: 0x55
Actual Value: 0x55
- IC_SAR (Offset 0x08): I2C Slave Address
Default Value: 0x55
Actual Value: 0x55
- IC_ENABLE (Offset 0x6C): I2C Enable
Actual Value: 0
- IC_STATUS (Offset 0x70): I2C Status register
Actual Value: 6
- IC_COMP_PARAM_1 (Offset 0xf4): Component Parameter Register
Actual Value: 0x1f1fee
- IC_COMP_VERSION (Offset 0xf8): Component Version ID
Reset Value: "See the releases table in the AMBA 2 release notes" (?)
Actual Value: 0x3230302a
- IC_COMP_TYPE (Offset 0xfc): DesignWare Component Type Register
Reset Value: 0x44570140
Actual Value: Yep correct
- IC_DEVICE_ID (Offset 0xb8): I2C Device ID
Reset Value: IC_DEVICE_ID_VALUE
Actual Value: 0
The above Actual Values were retrieved from U-Boot...
```bash
## Omitted: Power Up I2C Controller
...
## Dump the I2C Registers
$ md 0x10030000 0x40
10030000: 0000007f 00000055 00000055 00000001 ....U...U.......
10030010: 00000000 00000190 000001d6 0000003c ............<...
10030020: 00000082 00000006 00000010 00000000 ................
10030030: 000008ff 00000000 00000000 00000000 ................
10030040: 00000000 00000000 00000000 00000000 ................
10030050: 00000000 00000000 00000000 00000000 ................
10030060: 00000000 00000000 00000000 00000004 ................
10030070: 00000006 00000000 00000000 00000001 ................
10030080: 00000000 00000000 00000000 00000000 ................
10030090: 00000000 00000064 00000001 00000000 ....d...........
100300a0: 00000005 00000001 00000000 00000000 ................
100300b0: 00000000 00000000 00000000 00000000 ................
100300c0: 00000000 00000000 00000000 00000000 ................
100300d0: 00000000 00000000 00000000 00000000 ................
100300e0: 00000000 00000000 00000000 00000000 ................
100300f0: 00000000 001f1fee 3230302a 44570140 ........*002@.WD
```
TODO: Read PMIC with U-Boot
# PineTab-V Factory Test Code