Hello. I am using PetaLinuz on Zynq on a MicroZed and I am missing the mtd devices in the dev folder for accessing the QSPI flash. I am assuming this has to do with the device tree not flushed out correctly. I have read though quite a few posts about adjusting the compatibility setting, but either I am confused or they don't exactly match my situation.
The entry in the auto generated system-conf.dtsi looks like this:
&qspi {
#address-cells = <1>;
#size-cells = <0>;
flash0: flash@0 {
compatible = "micron,n25q128";
reg = <0x0>;
#address-cells = <1>;
#size-cells = <1>;
spi-max-frequency = <50000000>;
partition@0x00000000 {
label = "boot";
reg = <0x00000000 0x00500000>;
};
partition@0x00500000 {
label = "bootenv";
reg = <0x00500000 0x00020000>;
};
partition@0x00520000 {
label = "kernel";
reg = <0x00520000 0x00a80000>;
};
partition@0x00fa0000 {
label = "spare";
reg = <0x00fa0000 0x00000000>;
};
};
};
I did see that the device tree in the Xilinx wiki had more information in the root qspi node, so I added the following to my system-top.dst file which gets included.
&qspi {
compatible = "xlnx,zynq-qspi-1.0";
clock-names = "ref_clk", "pclk";
clocks = <&clkc 10>, <&clkc 43>;
/*interrupt-parent = <&ps7_scugic_0>;*/
interrupt-parent = <&intc>;
interrupts = <0 19 4>;
is-dual = <0>;
num-cs = <1>;
reg = <0xe000d000 0x1000>;
xlnx,fb-clk = <0x1>;
xlnx,qspi-mode = <0x0>;
};
I commented out the ps7_scugic_0 node as it wasn't recognized and put in the intc which grepping in the source directory seems to have the same register locations as a random definition for ps7_scugic_0 which I found online so I was hoping was the same thing. I compiled it all and ran it, but had no dice. The mtd devices do not show up and there are no symbolic links from the /dev/flash folder either. Thank you for help.
