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Mon, 3 Aug 2020 01:59:10 +0000 From: "Sit, Michael Wei Hong" To: Mark Brown Subject: RE: [PATCH 4/4] dt-bindings: sound: intel,keembay-i2s: Add channel-max property Thread-Topic: [PATCH 4/4] dt-bindings: sound: intel,keembay-i2s: Add channel-max property Thread-Index: AQHWZmTSECd6XhR1kUiCjOuunRmPnqklpW/g Date: Mon, 3 Aug 2020 01:59:10 +0000 Message-ID: References: <20200730055319.1522-1-michael.wei.hong.sit@intel.com> <20200730055319.1522-5-michael.wei.hong.sit@intel.com> <20200730112948.GB5055@sirena.org.uk> In-Reply-To: <20200730112948.GB5055@sirena.org.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-reaction: no-action dlp-version: 11.5.1.3 dlp-product: dlpe-windows authentication-results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=none action=none header.from=intel.com; x-originating-ip: [121.123.85.83] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 95877842-1acb-44ad-5745-08d83750d067 x-ms-traffictypediagnostic: BYAPR11MB3384: x-ld-processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; 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tiwai@suse.com; pierre- > louis.bossart@linux.intel.com; Rojewski, Cezary > ; Shevchenko, Andriy > ; liam.r.girdwood@linux.intel.com; Sia, > Jee Heng > Subject: Re: [PATCH 4/4] dt-bindings: sound: intel,keembay-i2s: Add > channel-max property >=20 > On Thu, Jul 30, 2020 at 01:53:19PM +0800, Michael Sit Wei Hong wrote: >=20 > > Add a property that configures the interface to the desired max number > > of capture channels. The platform may have multiple interfaces with > > different number of capture channels. >=20 > Why? None of the other platforms which support many channels need > this defining and the constraint code and/or machine driver would > normally be where this would be handled. The platform uses the audio-graph-card to create the dai-links, and doesn't= use a specific machine driver code. The platform also has 2 different interfaces which have different supported= max-channels. Using this value in the device-tree to determine the maximum supported chan= nel of the interface.