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arm64: dts: imx93-evk/qsb: add m2-pcm-level-shifter-hog to enable BT HFP

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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.

Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Sherry Sun 2026-01-21 19:13:46 +08:00 committed by Frank Li
parent 43eeae2b00
commit 8940756346
2 changed files with 12 additions and 0 deletions
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6
arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
View File

@ -356,6 +356,12 @@ pcal6524: gpio@22 {
#interrupt-cells = <2>;
interrupt-parent = <&gpio3>;
interrupts = <27 IRQ_TYPE_LEVEL_LOW>;
m2-pcm-level-shifter-hog {
gpio-hog;
gpios = <19 GPIO_ACTIVE_HIGH>;
output-high;
};
};
pmic@25 {

6
arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
View File

@ -349,6 +349,12 @@ mic-can-sel-hog {
gpios = <17 GPIO_ACTIVE_HIGH>;
output-low;
};
m2-pcm-level-shifter-hog {
gpio-hog;
gpios = <19 GPIO_ACTIVE_HIGH>;
output-high;
};
};
pmic@25 {