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In-Reply-To: <11481209-7c8f-7543-1e04-5723ffc2ccd4@windriver.com>
References: <20220928201656.30318-1-laurent.pinchart@ideasonboard.com> <11481209-7c8f-7543-1e04-5723ffc2ccd4@windriver.com>
Subject: Re: [PATCH] clk: zynqmp: pll: Fix divider calculation to avoid out-of-range rate
From:   Stephen Boyd <sboyd@kernel.org>
Cc:     linux-arm-kernel@lists.infradead.org,
        Michal Simek <michal.simek@xilinx.com>,
        Rajan Vaja <rajan.vaja@xilinx.com>,
        Maxime Ripard <maxime@cerno.tech>
To:     Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Quanyang Wang <quanyang.wang@windriver.com>,
        linux-clk@vger.kernel.org
Date:   Fri, 30 Sep 2022 17:05:01 -0700
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+Maxime

Quoting Quanyang Wang (2022-09-28 18:05:10)
> Hi Laurent,
>=20
> I have sent a patch as below to fix this issue which set rate failed and =

> it's in linux-next repo now.
>=20
> https://lore.kernel.org/linux-arm-kernel/20220826142030.213805-1-quanyang=
.wang@windriver.com/T/
>=20
>=20
> As for the frequency gap between the requested rate and the actual, it's =

> because of the commit:
>=20
> commit 948fb0969eae8
> Author: Maxime Ripard <maxime@cerno.tech>
> Date:=C2=A0=C2=A0 Fri Feb 25 15:35:26 2022 +0100
>=20
>  =C2=A0=C2=A0=C2=A0 clk: Always clamp the rounded rate
>=20
> And I haven't figured out how to fix it.
>=20

Maxime has some more patches to fix this and they're in linux-next.
Maybe those fix this problem?