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Tue, 28 May 2019 13:21:04 +0000 From: Daniel Baluta To: "robh+dt@kernel.org" , "shawnguo@kernel.org" , "timur@kernel.org" , "nicoleotsuka@gmail.com" , "broonie@kernel.org" Subject: [PATCH 3/3] ASoC: fsl_sai: Read SAI clock source 0 from DT Thread-Topic: [PATCH 3/3] ASoC: fsl_sai: Read SAI clock source 0 from DT Thread-Index: AQHVFVgzSnk/md+rr0q1nXIifh2ZzQ== Date: Tue, 28 May 2019 13:21:03 +0000 Message-ID: <20190528132034.3908-4-daniel.baluta@nxp.com> References: <20190528132034.3908-1-daniel.baluta@nxp.com> In-Reply-To: <20190528132034.3908-1-daniel.baluta@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR09CA0114.eurprd09.prod.outlook.com (2603:10a6:803:78::37) To AM6PR04MB5207.eurprd04.prod.outlook.com (2603:10a6:20b:e::31) authentication-results: spf=none (sender IP is ) smtp.mailfrom=daniel.baluta@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.17.1 x-originating-ip: [89.37.124.34] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 72fb9d2d-dcb8-4d18-2b25-08d6e36f5559 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0; 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Wang" , "linux-arm-kernel@lists.infradead.org" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP SAI provide multiple master clock source options selectable via bit MSEL of TCR2/RCR2. All possible master clock sources are stored in sai->mclk_clk array. Current implementation assumes that MCLK0 source is always busclk, but this is wrong! For example, on i.MX8QM we have: 00b - Bus Clock selected. 01b - Master Clock (MCLK) 1 option selected. 10b - Master Clock (MCLK) 2 option selected. 11b - Master Clock (MCLK) 3 option selected. while on i.MX6SX we have: 00b - Master Clock (MCLK) 1 option selected. 01b - Master Clock (MCLK) 1 option selected. 10b - Master Clock (MCLK) 2 option selected. 11b - Master Clock (MCLK) 3 option selected. So, this patch will read mclk0 source clock from device tree. Signed-off-by: Shengjiu Wang Signed-off-by: Daniel Baluta --- sound/soc/fsl/fsl_sai.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index db9e0872f73d..b563004fb89f 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -826,8 +826,7 @@ static int fsl_sai_probe(struct platform_device *pdev) sai->bus_clk = NULL; } - sai->mclk_clk[0] = sai->bus_clk; - for (i = 1; i < FSL_SAI_MCLK_MAX; i++) { + for (i = 0; i < FSL_SAI_MCLK_MAX; i++) { sprintf(tmp, "mclk%d", i); sai->mclk_clk[i] = devm_clk_get(&pdev->dev, tmp); if (IS_ERR(sai->mclk_clk[i])) {