18 Sep
2024
18 Sep
'24
2:46 a.m.
On Tue, Sep 17, 2024 at 9:21 PM Peng Fan peng.fan@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.