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Tue, 18 Dec 2018 02:56:03 +0000 From: Anson Huang To: "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , Fabio Estevam , "mturquette@baylibre.com" , "sboyd@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-clk@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: [PATCH] clk: imx: add CLK_GET_RATE_NOCACHE flag for i.MX8M composite clock Thread-Topic: [PATCH] clk: imx: add CLK_GET_RATE_NOCACHE flag for i.MX8M composite clock Thread-Index: AQHUln02eAG5Z54Wc0mB2eSSS/znhw== Date: Tue, 18 Dec 2018 02:56:03 +0000 Message-ID: <1545101396-16335-1-git-send-email-Anson.Huang@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR03CA0006.apcprd03.prod.outlook.com (2603:1096:203:2e::18) To DB3PR0402MB3916.eurprd04.prod.outlook.com (2603:10a6:8:10::18) authentication-results: spf=none (sender IP is ) smtp.mailfrom=anson.huang@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1; 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DIR:OUT; SFP:1101; SCL:1; SRVR:DB3PR0402MB3866; H:DB3PR0402MB3916.eurprd04.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: sf93K+F3Hna5r0gI0Y0XcQhGHo/VLRQbyxhiMBBD1R37G29fT3iTCjCgaQB6ho6k0vz72ORBGrH7skclwPyyO2FwgtUIihuwsVn0fZP3SeY75RnwkfVJw2JYC6z5zJ9552wLVKrWd9ZtLoq/8KTZgAvhnOwH0gzrrS3la1hZoyPcXvUn2wAmdY+aV9o9ZGzpXQ98Zs3PQ0Ve4EcCepr/DlslSi5ViQvGFYEzhv0oYkiesUE/r0yVRIvTTWZe3ZdQ1hGXluNOcMyz5cv6NzCP85QPtAgCKmJzD0hzagGnAe+9S0Rs4C7QT6thW3lZi9qF spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 964c3c64-6804-4506-9437-08d6649458cd X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Dec 2018 02:56:03.2212 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB3PR0402MB3866 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181217_185618_840296_3B80132B X-CRM114-Status: GOOD ( 11.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dl-linux-imx 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 On i.MX8M, some of the bus clocks' rate could be changed in TF-A, so Linux clock framework does NOT know it at all, need to add CLK_GET_RATE_NOCACHE flag for composite clock to make sure the clk rate from Linux clock tree always matches the HW settings. Signed-off-by: Anson Huang --- drivers/clk/imx/clk-composite-8m.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/imx/clk-composite-8m.c b/drivers/clk/imx/clk-composite-8m.c index 527ade1..d9147ec 100644 --- a/drivers/clk/imx/clk-composite-8m.c +++ b/drivers/clk/imx/clk-composite-8m.c @@ -161,6 +161,8 @@ struct clk *imx8m_clk_composite_flags(const char *name, gate->reg = reg; gate->bit_idx = PCG_CGC_SHIFT; + flags |= CLK_GET_RATE_NOCACHE; + hw = clk_hw_register_composite(NULL, name, parent_names, num_parents, mux_hw, &clk_mux_ops, div_hw, &imx8m_clk_composite_divider_ops,