Hi,
For a board based on the MBa6X (TQMa6s) TQ Group board, I tried to add our
needs in the device tree : we need to use i2c4. So I added the following
lines in imx6qdl-mba6x.dtsi and imx6qdl-tqma6x.dtsi
&i2c4 {
status = "okay";
clock-frequency = <100000>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c4_1>;
};
and then i2c4: i2c@021f8000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,imx1-i2c", "fsl,imx6q-i2c",
"fsl,imx21-i2c";
reg = <0x021f8000 0x4000>;
interrupts = <0 35 0x04>;
clocks = <&clks 128>;
status = "disabled";
};
in imx6qdl.dtsi.
All these lines are OK. Then I added the following lines in
imx6qdl-tqma6x.dtsi et imx6qdl.dtsi files :
i2c4 {
pinctrl_i2c4_1: i2c4grp-1 {
fsl,pins = <
MX6QDL_PAD_NANDF_WP_B__I2C4_SCL 0x4001b8b1
MX6QDL_PAD_NANDF_CS3__I2C4_SDA 0x4001b8b1
>;
};
};
But these lines can't be compiled and so generate a syntax error. Is anybody
knows why ?
Besides, I want to add an NVRAM (seen as an MTD-RAM) as we have one in our
design. I saw in the device tree documentation (device
tree/bindings/mtd/mtd-physmap.txt), that I have to add the following lines :
sram@2,0 {
compatible = "samsung,k6f1616u6a", "mtd-ram";
reg = <2 0 0x00200000>;
bank-width = <2>;
};
In what file of the same device tree would it be better to add these lines ?
Best regards,
Sophie
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