On Tuesday 10 September 2013 19:58:01 you wrote:
> On Tuesday 10 September 2013 12:26:32 you wrote:
> > Hi, I could really need some help to get the second application uart
> > working on my imx23 based board.
> >
So I've finally solved the issue after reading
Documentation/devicetree/bindings/pinctrl/fsl,mxs-pinctrl.txt again, the
pinmux-ids were wrong.
Required subnode-properties:
- fsl,pinmux-ids: An integer array. Each integer in the array specify a pin
with given mux function, with bank, pin and mux packed as below.
[15..12] : bank number
[11..4] : pin number
[3..0] : mux selection
0000000000000000
[ ][ ][ ]
bank pin mux
0000000011100000 0x00e0 /* MX23_PAD_GPMI_D14__GPMI_D14 */
0000000011110000 0x00f0 /* MX23_PAD_GPMI_D15__GPMI_D15 */
0b00001110 = 14
0b00001111 = 15
Looking at the datasheet, mux for auart should be 01:
0000000011100001 0x00e1 /* MX23_PAD_GPMI_D14__AUART2_TX */
0000000011110001 0x00f1 /* MX23_PAD_GPMI_D15__AUART2_RX */
Before I haven't understood the exact functioning of fsl,pinmux-ids but now
I've corrected arch/arm/boot/dts/imx23.dtsi:
auart1_2pins_a: auart1-2pins@0 {
reg = <0>;
fsl,pinmux-ids = <
0x00e1 /* MX23_PAD_GPMI_D14__AUART2_TX */
0x00f1 /* MX23_PAD_GPMI_D15__AUART2_RX */
>;
fsl,drive-strength = <0>;
fsl,voltage = <1>;
fsl,pull-up = <0>;
};
--
chris
--
To unsubscribe from this list: send the line "unsubscribe linux-serial" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
