On Mon, 2022-03-21 at 11:59 +0800, Tzung-Bi Shih wrote: > On Sat, Mar 19, 2022 at 07:41:10PM +0800, Jiaxin Yu wrote: > > @@ -1145,6 +1140,13 @@ static int mt8192_mt6359_dev_probe(struct > > platform_device *pdev) > > goto err_speaker_codec; > > } > > > > + headset_codec = of_get_child_by_name(pdev->dev.of_node, > > "mediatek,headset-codec"); > > + if (!headset_codec) { > > + ret = -EINVAL; > > + dev_err_probe(&pdev->dev, ret, "Property > > 'headset_codec' missing or invalid\n"); > > + goto err_headset_codec; > > + } > > (to be neat) Does it have any reason to prevent from using > of_parse_phandle() > but of_get_child_by_name()? Hi Tzung-Bi, "mediatek,headset-codec" is a child node of pdev->dev.of_node, so I use of_get_child_by_name() to get and pass it to snd_soc_of_get_dai_link_codecs(). Jiaxin.Yu Thanks