Re: [PATCH v2 8/8] ARM: dts: qcom: Add Samsung Galaxy S4

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 5/4/26 9:40 AM, Konrad Dybcio wrote:
> On 5/1/26 9:41 AM, MINETTE Alexandre wrote:
>> Thanks a lot for the suggestion, I checked the downstream board files
>> and it does not look like these buses are wired for GSBI.
>>
>> There, the MAX77693 bus is instantiated as a dedicated i2c-gpio bus on
>> GPIO 22/23, and the AN30259A LED bus as a dedicated i2c-gpio bus on
>> GPIO 6/7. The native APQ8064 GSBI2/GSBI3 I2C pins are different
>> (GPIO 24/25 and GPIO 8/9), so these two buses do not seem to be wired
>> to the GSBI controllers on jflte.
> 
> What I meant is that the pins that the i2c-gpio nodes reference
> are actually wired (inside the SoC) to the GSBI I2C controllers.
> 
> You'll notice that in drivers/pinctrl/qcom/pinctrl-apq8064.c,
> there are bits like:
> 
> PINGROUP(6, gsbi3, NA, NA, NA, NA, NA, NA, NA, NA, NA),
> 
> which mean "function 0 is GPIO [implicitly in the macro], function
> 1 is mux to the GSBI controller"

Unless you meant "these are indeed GSBI pins, but within that GSBIn
pingroup, those specific ones aren't assigned to SDA/SCL when
proto==I2C, to which I'm afraid I won't be able to find docs for (too
old)

Konrad