I'm working on nRF5340 custom platform (NCS 2.6.1, Zephyr 3.5.99).
I use MCUBoot immutable bootloader and external QSPI NOR Flash for slot-1 partition during DFU.
This is my working dts overlay configuration for flash model EN25QH64
/ {
aliases {
spi-flash0 = &en25qh64;
};
chosen {
nordic,pm-ext-flash = &en25qh64;
};
};
&qspi {
en25qh64: en25qh64@0 {
compatible = "nordic,qspi-nor";
reg = <0>;
sck-frequency = <8000000>;
jedec-id = [1c 70 17];
sfdp-bfp = [e5 20 fb ff 00 ff ff 03 44 eb 08 6b 08 3b 04 bb 04];
size = <67108864>;
has-dpd;
t-enter-dpd = <10000>;
t-exit-dpd = <35000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
data_partition: partition@0 {
label = "data";
reg = <0x000000000 0x000100000>;
};
en25qh64_slot1_partition: partition@100000 {
label = "image-1";
reg = <0x000100000 0x0001ac000>;
};
};
};
};
On the board I can replace the chip model with MX25R6435F. In this case the working overlay is
/ {
aliases {
spi-flash0 = &mx25r64;
};
chosen {
nordic,pm-ext-flash = &mx25r64;
};
};
&qspi {
mx25r64: mx25r6435f@0 {
compatible = "nordic,qspi-nor";
reg = <0>;
sck-frequency = <8000000>;
jedec-id = [c2 28 17];
sfdp-bfp = [
e5 20 f1 ff ff ff ff 03 44 eb 08 6b 08 3b 04 bb
ee ff ff ff ff ff 00 ff ff ff 00 ff 0c 20 0f 52
10 d8 00 ff 23 72 f5 00 82 ed 04 cc 44 83 68 44
30 b0 30 b0 f7 c4 d5 5c 00 be 29 ff f0 d0 ff ff
];
size = <67108864>;
has-dpd;
t-enter-dpd = <10000>;
t-exit-dpd = <35000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
data_partition: partition@0 {
label = "data";
reg = <0x000000000 0x000100000>;
};
slot1_partition: partition@100000 {
label = "image-1";
reg = <0x000100000 0x0001ac000>;
};
};
};
};
The question is, can I define a unified configuration for both the EN25QH64A and MX25R6435F flash devices in the devicetree overlay ?
At runtime, the firmware should be able to detect which flash is present (for example, by reading the JEDEC ID) and use the appropriate device.
Thank you.
