Hi, kindness people.
We try to check QSPI access on u-boot on our board.
But we cannot access to QSPI. the QSPI device is connect to same pins of MX7DSABRESD board.
We added define qspi and epdc. we refer imx7d-sdb-qspi.dtsi to modify device tree.
And we added asterisk on Device Drivers -> SPI support -> Freescale QSPI driver on 'make u-boot-menuconnfig'.
When we type command "sf probe 1:0" on u-boot prompt , device_fund_chip_select() is fail.
Because the 2nd parameter **devp of device_find_first_child() is NULL.
We would like to know how to modify to use qspi on u-boot sf command.
=====added contents in device tree(mx7d-sdb.dts)
/* disable epdc, conflict with qspi */
&epdc {
status = "disabled";
};
&iomuxc {
qspi1 {
pinctrl_qspi1_1: qspi1grp_1 {
fsl,pins = <
MX7D_PAD_EPDC_DATA00__QSPI_A_DATA0 0x51
MX7D_PAD_EPDC_DATA01__QSPI_A_DATA1 0x51
MX7D_PAD_EPDC_DATA02__QSPI_A_DATA2 0x51
MX7D_PAD_EPDC_DATA03__QSPI_A_DATA3 0x51
MX7D_PAD_EPDC_DATA05__QSPI_A_SCLK 0x51
MX7D_PAD_EPDC_DATA06__QSPI_A_SS0_B 0x51
>;
};
};
};
&qspi1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_qspi1_1>;
status = "okay";
ddrsmp=<0>;
flash0: is25lp01g@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spi-flash";
spi-max-frequency = <29000000>;
/* take off one dummy cycle */
spi-nor,ddr-quad-read-dummy = <5>;
reg = <0>;
};
flash1: mx25l51245g@1 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spi-flash";
spi-max-frequency = <29000000>;
/* take off one dummy cycle */
spi-nor,ddr-quad-read-dummy = <5>;
reg = <0>;
};
};
