Core-3399pr0-jd4 v1.3 i2c1 question

AndrewMaltsev

Hello.
I can't find the schematics on Core-3399Pro-JD4 v1.3.
I have only schematics on MB-JD4-RK3399_3399PRO v1.1.
My question is about i2c1. I see two TCS4525 and one TCS4526 on Core-3399Pro-JD4.
One TCS4525 and one TCS4526 is connected to i2c0. I see that in device tree file rk3399pro-firefly-aiojd4.dts and using i2cdetect utility. i2c address is 0x1c for TCS4525 and 0x10 for TCS4526. I can not find second TCS4525 in device tree file.
I looking for analogous board based on rk3399pro and saw that board have also two TCS4525 and one TCS4526. Second TCS4525 is connected to i2c1. With i2cdetect utility I see device with 0x1c address on i2c1, but schematics on MB-JD4-RK3399_3399PRO have ALC5640 codec on i2c1 and also with address 0x1c.

895816513

There are two TCS4525, but one is not actually used. Just refer to the dts.

AndrewMaltsev

895816513 Posted at 10/12/2022 09:29
There are two TCS4525, but one is not actually used. Just refer to the dts.

I looked at the schematics on tb-rk3399prod_33101_201812172.pdf (from https://www.mouser.com/pdfDocs/tb-rk3399prod_33101_201812172.pdf).
The second TCS4525 chip provides NPU_VDD_S0 (sheet 22).
Do you have the schematics for Core-3399Pro-JD4?
If it's okey then send me please an email to andymaltsev@mail.ru or provide a link.

Thanks for the answer.

AndrewMaltsev

I tried to remove resistor R102 from the mb board near pin 39 of ALC5640 (page 9 mb-jd4-rk3399_3399pro-v11-20190.pdf) and the device with address 0x1c on i2c1 disappeared. So it's a codec chip ALC5640.  The question about the second TCS4525 on Core-3399Pro-JD4 remained.

rickada540

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