DESK-XZ7-L/Peripherals/NOR
< DESK-XZ7-L
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| 2023/01/23 | DESK-XZ7-L-1.0.1 release | ||
QuadSPI NOR flash memory[edit | edit source]
Device tree configuration[edit | edit source]
This configuration work for Bora, Boralite and BoraX platforms.
Here below an example of device tree configuration used on standard DAVE's kit for the Bora, Boralite and BoraX QuadSPI NOR flash:
From bora.dtsi:
...
...
&qspi {
flash0: flash@0 {
// we need to use 128Mbit (16MiB) device compatibile even if
// the real hardware has a 256Mbit (32MiB) device because of
// Zynq QSPI controller limits
compatible = "spansion,s25fl128s1", "jedec,spi-nor";
#address-cells = <1>;
#size-cells = <1>;
reg = <0>;
spi-tx-bus-width = <1>;
spi-rx-bus-width = <4>;
spi-max-frequency = <25000000>;
};
};
...
...
Linux messages at boot time[edit | edit source]
- bootlog message
[ 0.509067] spi-nor spi0.0: found s25fl256s1, expected s25fl128s1 [ 0.515401] spi-nor spi0.0: s25fl256s1 (32768 Kbytes) [ 0.520482] 1 fixed-partitions partitions found on MTD device spi0.0 [ 0.526863] Creating 1 MTD partitions on "spi0.0": [ 0.531648] 0x000000000000-0x000002000000 : "boot"
- mtd partitions
root@boralite:~# cat /proc/mtd dev: size erasesize name mtd0: 01600000 00020000 "bootbin" mtd1: 00040000 00020000 "ubootenv" mtd2: 1be00000 00020000 "rootfs"
