[PATCH 21/21] imx93_evk: Enable M.2 VPCIe_3V3 and deassert SD3_nRST

[Fabio Estevam]

On Tue, Sep 17, 2024 at 9:21 PM Peng Fan <peng.fan at nxp.com> wrote:

> The linux changes still in downstream as below:
>         /*
>          * For this spi-nor on M.2 card, need first enable the VPCIe_3.3v.
>          * Note, VPCIe_3.3v need about 1.74ms to change from 0v to 3.3v.
>          * U-boot already enable VPCIe_3.3v, so in linux, can ignore this
>          * 1.7ms, if u-boot do not eanble VPCIe_3.3v first, then need to
>          * take care of the 1.74ms delay, better to build the flexspi driver
>          * as module in driver to avoid spi-nor probe fail.
>          */
>         pinctrl-assert-gpios = <&pcal6524 13 GPIO_ACTIVE_HIGH>,  /* enable VPCIe_3v3 */

This 'pinctrl-assert-gpios' is a NXP hack. It only exists in the NXP kernel.