[PATCH V2] arm64: dts: imx93-evk/qsb: add m2-pcm-level-shifter-hog to enable BT HFP
Frank Li
Frank.Li at nxp.com
Tue Feb 24 08:43:15 PST 2026
On Wed, 21 Jan 2026 19:13:46 +0800, Sherry Sun wrote:
> For i.MX93 11x11 EVK and 9x9 QSB boards, add the gpio-hog to enable the
> M.2 PCM pins level shifter connected between soc sai1 interface and M.2
> PCM pins so that HFP feature can be supported.
>
> Since the HFP is only used at a later stage — after the BT firmware has
> been downloaded and the BT connection with the remote device has been
> established — both the pcal6524 expander and sai1 interface are already
> fully initialized and available by that time. Therefore, using a
> gpio-hog here will not introduce any probe ordering or dependency issues
> for the HFP use case.
>
> [...]
Applied, thanks!
[1/1] arm64: dts: imx93-evk/qsb: add m2-pcm-level-shifter-hog to enable BT HFP
Best regards,
--
Frank Li <Frank.Li at nxp.com>
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