[PATCH] imx93_frdm: clear and mask TCPC interrupts

Peng Fan peng.fan at oss.nxp.com
Wed Jan 7 02:39:13 CET 2026


On Sat, Jan 03, 2026 at 10:22:12PM +0100, Francesco Valla wrote:
>One of the two on-board PTN5110 TCPC USB Power Delivery controller on
>the i.MX93 FRDM board shares its interrupt line whith the PCAL6524 power
>controller (GPIO3-27). Since the PTN5110 starts after POR with the
>interrupts enabled, this can lead to an interrupt storm on OS startup if
>only the driver for the PCAL6524 is loaded, because none is servicing
>(and clearing) the interrupt requests from the PTN5110.
>
>Maks and clear all interrupts as part uring board initialization; they
>can be re-enabled later by a proper OS driver if required.
>
>Co-developed-by: Joseph Guo <qijian.guo at nxp.com>
>Signed-off-by: Francesco Valla <francesco at valla.it>

Reviewed-by: Peng Fan <peng.fan at nxp.com>


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