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I2C is alive yay!

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Lee Lup Yuen 2023-10-17 16:18:22 +08:00
parent 9e323652b9
commit 46af7af383
1 changed files with 56 additions and 3 deletions
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@ -7740,9 +7740,56 @@ $ md 0x13020300 1
13020300: ffe5efcc ....
```
TODO
Which says that...
From [SYS SYSCON](https://doc-en.rvspace.org/JH7110/TRM/JH7110_TRM/sys_syscon.html):
- All I2C Clocks are Disabled
- All I2C Resets are Asserted (except U0 and U5)
Let's enable all the I2C Clocks and deassert all the I2C Resets...
```bash
## Enable the I2C Clocks
$ mw 0x13020228 0x80000000 7
$ md 0x13020228 7
13020228: 80000000 80000000 80000000 80000000 ................
13020238: 80000000 80000000 80000000 ............
## Deassert the I2C Resets
$ mw 0x13020300 0xffe00fcc 1
$ md 0x13020300 1
13020300: ffe00fcc ....
## Check the System SYSCON for I2C
$ md 0x13030014 1
13030014: 00d54d54 TM..
$ md 0x1303009c 1
1303009c: 00042600 .&..
## 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
```
Yep I2C is alive yay!
TODO: What about [SYS SYSCON](https://doc-en.rvspace.org/JH7110/TRM/JH7110_TRM/sys_syscon.html):
- Base Address of System SYSCON: 0x00_1303_0000
@ -7767,7 +7814,13 @@ $ md 0x1303009c 1
1303009c: 00042600
```
TODO
Which says that...
- I2C Port U5 is enabled
- Other I2C Ports U0 to U6 are disabled
TODO: Let's check again after enabling I2C
I2C Devices: https://doc-en.rvspace.org/VisionFive2/DG_I2C/JH7110_SDK/i2c_source_code.html