From: Stephen Boyd <sboyd@kernel.org>
To: "festevam@gmail.com" <festevam@gmail.com>,
"mturquette@baylibre.com" <mturquette@baylibre.com>,
"s.hauer@pengutronix.de" <s.hauer@pengutronix.de>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
Peng Fan <peng.fan@nxp.com>
Cc: "kernel@pengutronix.de" <kernel@pengutronix.de>,
dl-linux-imx <linux-imx@nxp.com>,
Anson Huang <anson.huang@nxp.com>, Jacky Bai <ping.bai@nxp.com>,
Abel Vesa <abel.vesa@nxp.com>,
"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Leonard Crestez <leonard.crestez@nxp.com>,
Peng Fan <peng.fan@nxp.com>
Subject: Re: [PATCH V3 2/4] clk: imx: clk-pll14xx: unbypass PLL by default
Date: Tue, 17 Sep 2019 23:07:26 -0700 [thread overview]
Message-ID: <20190918060727.80D9620856@mail.kernel.org> (raw)
In-Reply-To: <1568043491-20680-3-git-send-email-peng.fan@nxp.com>
Quoting Peng Fan (2019-09-08 20:39:39)
> From: Peng Fan <peng.fan@nxp.com>
>
> When registering the PLL, unbypass the PLL.
> The PLL has two bypass control bit, BYPASS and EXT_BYPASS.
> we will expose EXT_BYPASS to clk driver for mux usage, and keep
> BYPASS inside pll14xx usage. The PLL has a restriction that
> when M/P change, need to RESET/BYPASS pll to avoid glitch, so
> we could not expose BYPASS.
>
> To make it easy for clk driver usage, unbypass PLL which does
> not hurt current function.
>
> Fixes: 8646d4dcc7fb ("clk: imx: Add PLLs driver for imx8mm soc")
> Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
Applied to clk-next
next prev parent reply other threads:[~2019-09-18 6:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-09 3:39 [PATCH V3 0/4] clk: imx8m: fix glitch/mux Peng Fan
2019-09-09 3:39 ` [PATCH V3 1/4] clk: imx: pll14xx: avoid glitch when set rate Peng Fan
2019-09-18 6:07 ` Stephen Boyd
2019-09-09 3:39 ` [PATCH V3 2/4] clk: imx: clk-pll14xx: unbypass PLL by default Peng Fan
2019-09-18 6:07 ` Stephen Boyd [this message]
2019-09-09 3:39 ` [PATCH V3 3/4] clk: imx: imx8mm: fix pll mux bit Peng Fan
2019-09-18 6:07 ` Stephen Boyd
2019-09-09 3:39 ` [PATCH V3 4/4] clk: imx: imx8mn: " Peng Fan
2019-09-18 6:07 ` Stephen Boyd
2019-09-17 6:20 ` [PATCH V3 0/4] clk: imx8m: fix glitch/mux Peng Fan
2019-09-17 16:28 ` Stephen Boyd
2019-09-18 5:45 ` Peng Fan
2019-09-18 5:53 ` Stephen Boyd
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