I set the parameters read from the Flash memory into sfdp-dfp in the Device Tree, but the Read command does not work correctly.
Although I set the wait cycle for read operations to 10 cycles in sfdp-dfp, it seems that the microcontroller is using 6 cycles when reading.
Currently, I am using the "nrf_qspi_nor.c" QSPI driver and the Zephyr RTOS.
sdk version is v2.6.1.
The Flash memory connected to the microcontroller is MX25U51245G, and the read command is 0xEB.
When I checked the source code of nrf_qspi_nor.c, I could not find any code that refers to sfdp-dfp.
In this development environment, does setting sfdp-dfp have no effect?
If it is possible to apply the setting, please let me know how to do it.
device tree settings is below.
&qspi {
status = "okay";
pinctrl-0 = <&qspi_default>;
pinctrl-1 = <&qspi_sleep>;
pinctrl-names = "default", "sleep";
ext_flash: mx25u51245g@0 {
compatible = "nordic,qspi-nor";
reg = <0>;
writeoc = "pp4io";
readoc = "read4io";
sck-frequency = <48000000>;
jedec-id = [c2 95 3A];
size = <536870912>;
sfdp-bfp = [
e5 20 fd ff ff ff ff 1f 48 eb 0a 6b 0a 3b 0a bb
fe ff ff ff ff ff 00 ff ff ff 48 eb 0c 20 0f 52
10 d8 00 ff 87 49 b5 00 82 d2 04 e2 44 03 67 38
30 b0 30 b0 f7 bd d5 5c 4a 9e 29 ff f0 10 c0 c0
];
has-dpd;
t-enter-dpd = <10000>;
t-exit-dpd = <30000>;
address-size-32;
};
};
red mark is read command(0xEB) & wait cycle(0x48).
best regards.
red mark is read command(0xEB) & wait cycle(0x48).
best regards.
