linux-kernel - Re: [PATCH V5 4/5] clk: imx: support fracn gppll

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Date:   Thu, 24 Feb 2022 17:55:49 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Peng Fan (OSS) <peng.fan@....nxp.com>, abel.vesa@....com,
        robh+dt@...nel.org, s.hauer@...gutronix.de, shawnguo@...nel.org
Cc:     kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>
Subject: Re: [PATCH V5 4/5] clk: imx: support fracn gppll

Quoting Peng Fan (OSS) (2022-02-24 17:42:33)
> From: Peng Fan <peng.fan@....com>
> 
> This PLL module is a Fractional-N synthesizer,
> supporting 30-bit numerator and denominator. Numerator is a signed
> number. It has feature to adjust fractional portion of feedback
> divider dynamically. This fracn gppll is used in i.MX93.
> 
> Reviewed-by: Abel Vesa <abel.vesa@....com>
> Signed-off-by: Peng Fan <peng.fan@....com>
> ---
>  drivers/clk/imx/Makefile          |   1 +
>  drivers/clk/imx/clk-fracn-gppll.c | 324 ++++++++++++++++++++++++++++++
>  drivers/clk/imx/clk.h             |  21 ++
>  3 files changed, 346 insertions(+)
>  create mode 100644 drivers/clk/imx/clk-fracn-gppll.c
> 
> diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
> index 36c04922d789..60c8a4bb7574 100644
> --- a/drivers/clk/imx/Makefile
> +++ b/drivers/clk/imx/Makefile
> @@ -5,6 +5,7 @@ mxc-clk-objs += clk-busy.o
>  mxc-clk-objs += clk-composite-7ulp.o
>  mxc-clk-objs += clk-composite-8m.o
>  mxc-clk-objs += clk-composite-93.o
> +mxc-clk-objs += clk-fracn-gppll.o
>  mxc-clk-objs += clk-cpu.o
>  mxc-clk-objs += clk-divider-gate.o
>  mxc-clk-objs += clk-fixup-div.o
> diff --git a/drivers/clk/imx/clk-fracn-gppll.c b/drivers/clk/imx/clk-fracn-gppll.c
> new file mode 100644
> index 000000000000..57b38147f05a
> --- /dev/null
> +++ b/drivers/clk/imx/clk-fracn-gppll.c
> @@ -0,0 +1,324 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright 2021 NXP
> + */
> +
> +#include <asm/div64.h>

Please include this after linux headers

> +#include <linux/bitfield.h>
> +#include <linux/clk-provider.h>
> +#include <linux/err.h>
> +#include <linux/export.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/slab.h>
> +#include <linux/jiffies.h>

Is this include used?

> +
> +#include "clk.h"
> +