Problem with QSPI driver W25Q64FV

RE: Problem with QSPI driver W25Q64FV

Kazi Afroza Sultana — Fri, 17 Jul 2026 16:08:55 GMT

Hello,

You have made a duplicate case here (+) Nordic DevZone. Can you close one?

RE: Problem with QSPI driver W25Q64FV

doltcat — Tue, 14 Jul 2026 07:12:22 GMT

I have already tested it,
writeoc = "pp4o";
writeoc = "pp"
It can be read and written normally,
Only when writeoc = "pp4io"; Unavailable

Thanks.

RE: Problem with QSPI driver W25Q64FV

Kazi Afroza Sultana — Mon, 13 Jul 2026 21:21:35 GMT

Hello,

The log shows the output data is all zero. So, nothing is programmed on the chip. You may try to read single line first to check if MOSI and MISO line are correctly wired.

w25q64fv: w25q64fv@0 {
compatible = "nordic,qspi-nor";
reg = <0>;
sck-frequency = <4000000>;
jedec-id = [ef 40 17];
size = <0x800000>; /* bits = 8MB * 8 */
writeoc = "pp"; /* single-line page program */
readoc = "fastread"; /* single-line fast read */
status = "okay";
/* remove rest of the settings for this first checking */
};

Thanks.

Kazi