Re: [PATCH v4 3/3] arm64: dts: qcom: Add Vicharak Axon Mini

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

On 6/20/26 6:57 AM, Ajit Singh wrote:
> On Fri, Jun 19, 2026 at 05:30:40PM +0530, Konrad Dybcio wrote:
>> On 6/18/26 8:29 AM, Ajit Singh wrote:
>>> On Tue, Jun 16, 2026 at 02:10:44PM +0530, Konrad Dybcio wrote:
>>>> On 6/12/26 6:16 AM, Ajit Singh wrote:
>>>>> On Wed, Jun 10, 2026 at 02:58:19PM +0530, Konrad Dybcio wrote:
>>>>>> On 6/7/26 1:36 PM, Ajit Singh wrote:
>>>>>>> Add DTS for the Vicharak Axon Mini board based on the Qualcomm
>>>>>>> QCS6490 SoC.
>>>>>>>
>>>>>>> This adds debug UART, eMMC, UFS, SDIO WLAN, USB 2.0 host, PCIe
>>>>>>> support along with regulators.
>>>>>>>
>>>>>>> The UFS ICE block is kept disabled because enabling it currently causes
>>>>>>> an SError during qcom_ice_create() on this board. UFS works without ICE.
>>>>>>>
>>>>>>> Signed-off-by: Ajit Singh <blfizzyy@gmail.com>
>>>>>>> ---

[...]

>>
>> most notably though, it seems that the brcmfmac driver doesn't even use
>> the regulator framework, probably because all of the SDIO WLANs that
>> Linux supports were wired in a more "embedded" way, where the V(Q)MMC
>> supplies were enough.. unless it's the case here too?
> 
> It might not be possible to drop regulator-always-on for VREG_L12C here. The
> SDHC2 host already has its own vmmc/vqmmc rails:
> 
> vqmmc-supply = <&vreg_l2c_1p62>;
> vmmc-supply = <&vreg_l6c_2p96>;
> 
> VREG_L12C is a separate module-side VDDIO rail for the AP6272S WLAN/BT module.
> There is no separate GPIO-controlled enable for this rail;
> 
> as you said, since brcmfmac does not appear to consume an extra VDDIO regulator
> from the SDIO child node, so unless there is a preferred way to model this
> module-side VDDIO rail, I think VREG_L12C still needs to stay always-on.

OK, let's get this merged then

Konrad