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Mon, 30 Dec 2019 09:12:56 +0000 From: Peng Fan To: "sboyd@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "festevam@gmail.com" , Abel Vesa , Leonard Crestez CC: "kernel@pengutronix.de" , dl-linux-imx , Aisheng Dong , "linux-clk@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Anson Huang , Jacky Bai , Peng Fan Subject: [PATCH 1/3] clk: imx: pll14xx: avoid modify dram pll Thread-Topic: [PATCH 1/3] clk: imx: pll14xx: avoid modify dram pll Thread-Index: AQHVvvFVclUlXNz3QUm1xFZVDau/cw== Date: Mon, 30 Dec 2019 09:13:00 +0000 Message-ID: <1577696903-27870-2-git-send-email-peng.fan@nxp.com> References: <1577696903-27870-1-git-send-email-peng.fan@nxp.com> In-Reply-To: <1577696903-27870-1-git-send-email-peng.fan@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: HK2PR03CA0057.apcprd03.prod.outlook.com (2603:1096:202:17::27) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=peng.fan@nxp.com; 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x-microsoft-antispam-message-info: 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 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 733d5376-6d1f-41eb-8f1b-08d78d0877ef X-MS-Exchange-CrossTenant-originalarrivaltime: 30 Dec 2019 09:13:01.0156 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: McIAWQEtJgy6BZzlTK5mi2r/ZjHtTrv3br80yplq20Rf8yTBUEtK+ciqXHqszD8sC5joqlcTlTnd0V+aCVf3Fg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6401 Sender: linux-clk-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org From: Peng Fan The dram pll is only expected to be modified in firmware, so we should only support read clk frequency in Linux Kernel. Signed-off-by: Peng Fan --- drivers/clk/imx/clk-pll14xx.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c index 5b0519a81a7a..9288b21d4d59 100644 --- a/drivers/clk/imx/clk-pll14xx.c +++ b/drivers/clk/imx/clk-pll14xx.c @@ -69,8 +69,6 @@ struct imx_pll14xx_clk imx_1443x_pll =3D { =20 struct imx_pll14xx_clk imx_1443x_dram_pll =3D { .type =3D PLL_1443X, - .rate_table =3D imx_pll1443x_tbl, - .rate_count =3D ARRAY_SIZE(imx_pll1443x_tbl), .flags =3D CLK_GET_RATE_NOCACHE, }; =20 @@ -376,6 +374,10 @@ static const struct clk_ops clk_pll1443x_ops =3D { .set_rate =3D clk_pll1443x_set_rate, }; =20 +static const struct clk_ops clk_pll1443x_min_ops =3D { + .recalc_rate =3D clk_pll1443x_recalc_rate, +}; + struct clk_hw *imx_clk_hw_pll14xx(const char *name, const char *parent_nam= e, void __iomem *base, const struct imx_pll14xx_clk *pll_clk) @@ -403,7 +405,10 @@ struct clk_hw *imx_clk_hw_pll14xx(const char *name, co= nst char *parent_name, init.ops =3D &clk_pll1416x_ops; break; case PLL_1443X: - init.ops =3D &clk_pll1443x_ops; + if (!pll_clk->rate_table) + init.ops =3D &clk_pll1443x_min_ops; + else + init.ops =3D &clk_pll1443x_ops; break; default: pr_err("%s: Unknown pll type for pll clk %s\n", --=20 2.16.4