soc: imx9: don't access of_root directly

Don't access of_root directly as it reduces the build test coverage for
this driver with COMPILE_TEST=y and OF=n. Use existing helper functions
to retrieve the relevant information.

Suggested-by: Rob Herring <robh@kernel.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260223-soc-of-root-v2-7-b45da45903c8@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/soc/imx/soc-imx9.c b/drivers/soc/imx/soc-imx9.c
index d67bc7402b10e2966ff77cbf3b15c087540bd377..58eef7d4f9089ae56891507e8dec383e69884ec5 100644 (file)
--- a/drivers/soc/imx/soc-imx9.c
+++ b/drivers/soc/imx/soc-imx9.c
@@ -30,7 +30,7 @@ static int imx9_soc_probe(struct platform_device *pdev)
        if (!attr)
                return -ENOMEM;
 
-       err = of_property_read_string(of_root, "model", &attr->machine);
+       err = soc_attr_read_machine(attr);
        if (err)
                return dev_err_probe(dev, err, "%s: missing model property\n", __func__);
 
@@ -89,7 +89,7 @@ static int __init imx9_soc_init(void)
        struct platform_device *pdev;
 
        /* No match means it is not an i.MX 9 series SoC, do nothing. */
-       if (!of_match_node(imx9_soc_match, of_root))
+       if (!of_machine_device_match(imx9_soc_match))
                return 0;
 
        ret = platform_driver_register(&imx9_soc_driver);