Can't compile/run blinky on IMX8MP DSP HiFi4

[majidBahmanigbt]

Blinky for IMX8MP DSP HiFi4: No SOURCES given to Zephyr library

I want to compile blinky for IMX8MP DSP. I added led node in zephyr/zephyr/boards/nxp/imx8mp_evk/imx8mp_evk_mimx8ml8_adsp.dts :

    aliases {
        led0 = &myled0;
    };

    leds {
        compatible = "gpio-leds";
        myled0: led_0 {
            gpios = <&gpio3 16 GPIO_ACTIVE_LOW>;
                };
        status = "okay";
    };

Then I added gpio3 node in zephyr/zephyr/dts/xtensa/nxp/nxp_imx8m.dtsi:

gpio3: gpio@30220000 {
            compatible = "nxp,imx-gpio";
            reg = <0x30220000 DT_SIZE_K(64)>;
            rdc = <(RDC_DOMAIN_PERM(A7_DOMAIN_ID,\
                           RDC_DOMAIN_PERM_RW)|\
                   RDC_DOMAIN_PERM(M7_DOMAIN_ID,\
                           RDC_DOMAIN_PERM_RW))>;
            gpio-controller;
            #gpio-cells = <2>;
            status = "okay";
        };

However, When I compile the code:

west build -p always -b imx8mp_evk//adsp  samples/basic/blinky

I am getting this warning:

CMake Warning at /home/xxxx/nxp/Repositories/DSP_Zephyr/zephyr/zephyr/CMakeLists.txt:865 (message):
  No SOURCES given to Zephyr library: drivers__gpio
  Excluding target from build.

And the compile fails with the following Error:

/home/xxxx/zephyr-sdk-0.16.5-1/xtensa-nxp_imx8m_adsp_zephyr-elf/bin/../lib/gcc/xtensa-nxp_imx8m_adsp_zephyr-elf/12.2.0/../../../../xtensa-nxp_imx8m_adsp_zephyr-elf/bin/ld.bfd: app/libapp.a(main.c.obj):(.literal.main+0x8): undefined reference to `__device_dts_ord_37'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /usr/bin/cmake --build /home/xxxx/nxp/Repositories/DSP_Zephyr/zephyr/build

According to /zephyr/include/generated/devicetree_generated.h "__device_dts_ord_37" is related to gpio3 Please note that when I compile the code for IMX8MP CM7, it is done with no issue:

west build -p always -b imx8mp_evk//m7 samples/basic/blinky

Could you please tell me how it is possible to solve this problem?

• Page: samples/basic/blinky/README
• Version: main
• SHA-1: b22bb172f28c7fb388d7703e43b5e24d2308a84f

[kartben]

I think it is as simple as GPIO support not being there for the Xtensa ADSP core. @dbaluta and @iuliana-prodan can probably comment further.

[dbaluta]

as @kartben said I think no one bothered with GPIO support for Xtensa ADSP.

So, first step would be to understand which driver needs to be pulled in.

Maybe

--- a/soc/nxp/imx/imx8m/Kconfig
+++ b/soc/nxp/imx/imx8m/Kconfig
@@ -51,6 +51,7 @@ config SOC_MIMX8ML8_ADSP
        select HAS_MCUX_CCM if CLOCK_CONTROL
        select HAS_MCUX_IOMUXC if PINCTRL
        select PINCTRL_IMX if HAS_MCUX_IOMUXC
+       select HAS_MCUX_IGPIO
        select CPU_HAS_DCACHE

Will have a look once we can get some free time. We are now travelling for EOSS.

Cc: @LaurentiuM1234

[majidBahmanigbt]

Hi, I didn't know where I should enable the GPIO for DSP! It works now. Thank you