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From: Abel Vesa <abel.vesa@nxp.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: linux-clk@vger.kernel.org,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Adrian Alonso <adrian.alonso@nxp.com>,
	Mads Bligaard Nielsen <bli@bang-olufsen.dk>
Subject: Re: [PATCH 2/8] clk: imx: pll14xx: Fix masking
Date: Wed, 23 Feb 2022 13:31:09 +0200	[thread overview]
Message-ID: <YhYa/TWsd9C4ebtX@abelvesa> (raw)
In-Reply-To: <20220223075601.3652543-3-s.hauer@pengutronix.de>

On 22-02-23 08:55:55, Sascha Hauer wrote:
> The code tries to mask the bits in SDIV_MASK from 'tmp'. SDIV_MASK
> already contains the shifted value, so shifting it again is wrong.
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Do we need some fixes tag, maybe?

Reviewed-by: Abel Vesa <abel.vesa@nxp.com>

> ---
>  drivers/clk/imx/clk-pll14xx.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c
> index cae64d750672e..b295d8a049009 100644
> --- a/drivers/clk/imx/clk-pll14xx.c
> +++ b/drivers/clk/imx/clk-pll14xx.c
> @@ -195,7 +195,7 @@ static int clk_pll1416x_set_rate(struct clk_hw *hw, unsigned long drate,
>  	tmp = readl_relaxed(pll->base + DIV_CTL0);
>  
>  	if (!clk_pll14xx_mp_change(rate, tmp)) {
> -		tmp &= ~(SDIV_MASK) << SDIV_SHIFT;
> +		tmp &= ~SDIV_MASK;
>  		tmp |= rate->sdiv << SDIV_SHIFT;
>  		writel_relaxed(tmp, pll->base + DIV_CTL0);
>  
> @@ -261,7 +261,7 @@ static int clk_pll1443x_set_rate(struct clk_hw *hw, unsigned long drate,
>  	tmp = readl_relaxed(pll->base + DIV_CTL0);
>  
>  	if (!clk_pll14xx_mp_change(rate, tmp)) {
> -		tmp &= ~(SDIV_MASK) << SDIV_SHIFT;
> +		tmp &= ~SDIV_MASK;
>  		tmp |= rate->sdiv << SDIV_SHIFT;
>  		writel_relaxed(tmp, pll->base + DIV_CTL0);
>  
> -- 
> 2.30.2
>

  reply	other threads:[~2022-02-23 11:31 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-23  7:55 [PATCH 0/8] clk: i.MX: PLL14xx: Support dynamic rates Sascha Hauer
2022-02-23  7:55 ` [PATCH 1/8] clk: imx: pll14xx: Use register defines consistently Sascha Hauer
2022-02-23 11:29   ` Abel Vesa
2022-02-23  7:55 ` [PATCH 2/8] clk: imx: pll14xx: Fix masking Sascha Hauer
2022-02-23 11:31   ` Abel Vesa [this message]
2022-02-23 11:46     ` Sascha Hauer
2022-02-23  7:55 ` [PATCH 3/8] clk: imx: pll14xx: Use FIELD_GET/FIELD_PREP Sascha Hauer
2022-02-23 11:34   ` Abel Vesa
2022-02-23 13:09   ` kernel test robot
2022-02-23  7:55 ` [PATCH 4/8] clk: imx: pll14xx: consolidate rate calculation Sascha Hauer
2022-02-23  7:55 ` [PATCH 5/8] clk: imx: pll14xx: name variables after usage Sascha Hauer
2022-02-23  7:55 ` [PATCH 6/8] clk: imx: pll14xx: explicitly return lowest rate Sascha Hauer
2022-02-23  7:56 ` [PATCH 7/8] clk: imx: pll14xx: Add pr_fmt Sascha Hauer
2022-02-23 12:47   ` kernel test robot
2022-02-23  7:56 ` [PATCH 8/8] clk: imx: pll14xx: Support dynamic rates Sascha Hauer
2022-02-23 12:48   ` kernel test robot

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