Sorry poor english. I need help or some hint.
I use I.mx6ull (var-dart-custom? from DART-6UL - Variscite Wiki )
and I should use IS25LP016D (It's serial flash memory http://www.issi.com/WW/pdf/25LP-WP016D.pdf )
I'm poor about linux build or device tree set.
but I found about SPI(DART-6UL SPI - Variscite Wiki )
//example.
&ecspi1 {
fsl,spi-num-chipselects = <1>;
cs-gpios = <&gpio4 26 0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi1_1>;
status = "okay";
chip1: spidev@0 {
compatible = "spidev";
spi-max-frequency = <12000000>;
reg = <0>;
};
};&iomuxc {
//imx6ul-evk {
pinctrl_ecspi1_1: ecspi1grp {
fsl,pins = <
MX6UL_PAD_CSI_DATA07__ECSPI1_MISO 0x100b1
MX6UL_PAD_CSI_DATA06__ECSPI1_MOSI 0x100b1
MX6UL_PAD_CSI_DATA04__ECSPI1_SCLK 0x100b1
MX6UL_PAD_CSI_DATA05__GPIO4_IO26 0x100b1
>;
};
//};
};
but I use spidev by python. but It looks like doesn't work. I use spidev's method like
(readbytes, writebytes, xfer) all of them return just [0].
actually, I want to this one [IS25LP016D] to flash disk. like just mount.
what should I do? I found like this.
//m25p80 is like a common spi flash driver.?
&ecspi1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ecspi1_1>;
status = "okay";
cs-gpios = <&gpio4 24 0>;
flash@0 {
compatible = "m25p80", "jedec,spi-nor";
spi-max-frequency = <20000000>;
reg = <0>;
};
};
&iomuxc ・・・・
pinctrl_ecspi1_1: ecspi1grp {
fsl,pins = <
MX6UL_PAD_CSI_DATA07__ECSPI1_MISO 0x100b1
MX6UL_PAD_CSI_DATA06__ECSPI1_MOSI 0x100b1
MX6UL_PAD_CSI_DATA04__ECSPI1_SCLK 0x100b1
>;
};
but It's error like this. sorry about poor skill.
m25p80 spi0.0: unrecognized JEDEC id bytes: 9d, 60, 15
I found spi-nor / mtd / something else.
but I need more helpful info or some advise or uage example.
thanks.
