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Octal RAM and Flash Driver in iMX8 BSP

Question asked by Milan Joshi on Apr 9, 2020
Latest reply on Apr 10, 2020 by Rita Wang

Hi Team,


I am Currently exploring the OctalSPI in i.MX8 family.


In fsl-imx8qxp-mek.dtsi there is a node for the micron octal flash:

&flexspi0 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_flexspi0>;
status = "okay";
flash0: mt35xu512aba@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <1>;
compatible = "micron,mt35xu512aba";
spi-max-frequency = <133000000>;
spi-nor,ddr-quad-read-dummy = <8>;

but could not find any driver with "micron,mt35xu512aba" compatible property. Can you let us know where is the driver for this flash is located in Linux-imx? we are using Linux kernel version 4.19.35.  


I don't find anything for Octal RAM.  Can someone guide me for the same?