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Tue, 4 Feb 2020 13:41:18 +0000 From: peng.fan@nxp.com To: shawnguo@kernel.org, s.hauer@pengutronix.de, sboyd@kernel.org, abel.vesa@nxp.com, aisheng.dong@nxp.com, leonard.crestez@nxp.com Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, ping.bai@nxp.com, Anson.Huang@nxp.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, Peng Fan Subject: [PATCH 2/7] clk: imx: pfdv2: switch to use determine_rate Date: Tue, 4 Feb 2020 21:34:32 +0800 Message-Id: <1580823277-13644-3-git-send-email-peng.fan@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580823277-13644-1-git-send-email-peng.fan@nxp.com> References: <1580823277-13644-1-git-send-email-peng.fan@nxp.com> Content-Type: text/plain X-ClientProxiedBy: HK0PR03CA0107.apcprd03.prod.outlook.com (2603:1096:203:b0::23) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) MIME-Version: 1.0 Received: from localhost.localdomain (119.31.174.66) by HK0PR03CA0107.apcprd03.prod.outlook.com (2603:1096:203:b0::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.2686.28 via Frontend Transport; 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In this patch, the parent clock is just parent->rate as round_rate. The following patch will calculate the best parent clock. Signed-off-by: Peng Fan --- drivers/clk/imx/clk-pfdv2.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/clk/imx/clk-pfdv2.c b/drivers/clk/imx/clk-pfdv2.c index f8707278aad9..28b5f208ced9 100644 --- a/drivers/clk/imx/clk-pfdv2.c +++ b/drivers/clk/imx/clk-pfdv2.c @@ -98,10 +98,11 @@ static unsigned long clk_pfdv2_recalc_rate(struct clk_hw *hw, return tmp; } -static long clk_pfdv2_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +static int clk_pfdv2_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) { - u64 tmp = *prate; + u64 tmp = req->best_parent_rate; + u64 rate = req->rate; u8 frac; tmp = tmp * 18 + rate / 2; @@ -113,11 +114,13 @@ static long clk_pfdv2_round_rate(struct clk_hw *hw, unsigned long rate, else if (frac > 35) frac = 35; - tmp = *prate; + tmp = req->best_parent_rate; tmp *= 18; do_div(tmp, frac); - return tmp; + req->rate = tmp; + + return 0; } static int clk_pfdv2_is_enabled(struct clk_hw *hw) @@ -167,7 +170,7 @@ static const struct clk_ops clk_pfdv2_ops = { .enable = clk_pfdv2_enable, .disable = clk_pfdv2_disable, .recalc_rate = clk_pfdv2_recalc_rate, - .round_rate = clk_pfdv2_round_rate, + .determine_rate = clk_pfdv2_determine_rate, .set_rate = clk_pfdv2_set_rate, .is_enabled = clk_pfdv2_is_enabled, }; -- 2.16.4