From: Stephen Boyd <sboyd@kernel.org>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Neil Armstrong <narmstrong@baylibre.com>,
dbasehore@chromium.org
Cc: khilman@baylibre.com, linux-kernel@vger.kernel.org,
linux-gpio@vger.kernel.org, linux-amlogic@lists.infradead.org,
linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
jbrunet@baylibre.com
Subject: Re: [RFC/RFT v3 07/14] clk: meson: g12a: add notifiers to handle cpu clock change
Date: Wed, 07 Aug 2019 21:43:21 -0700 [thread overview]
Message-ID: <20190808044322.30FC0217D7@mail.kernel.org> (raw)
In-Reply-To: <CAFBinCAnKeGYkyCmEMugWuQaSxgBp4DqtHN3b0rLJY6jwOF0QA@mail.gmail.com>
Quoting Martin Blumenstingl (2019-07-02 16:28:55)
> Hi Stephen, Hi Neil,
>
> On Mon, Jul 1, 2019 at 11:13 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
> >
> > In order to implement clock switching for the CLKID_CPU_CLK and
> > CLKID_CPUB_CLK, notifiers are added on specific points of the
> > clock tree :
> >
> > cpu_clk / cpub_clk
> > | \- cpu_clk_dyn
> > | | \- cpu_clk_premux0
> > | | |- cpu_clk_postmux0
> > | | | |- cpu_clk_dyn0_div
> > | | | \- xtal/fclk_div2/fclk_div3
> > | | \- xtal/fclk_div2/fclk_div3
> > | \- cpu_clk_premux1
> > | |- cpu_clk_postmux1
> > | | |- cpu_clk_dyn1_div
> > | | \- xtal/fclk_div2/fclk_div3
> > | \- xtal/fclk_div2/fclk_div3
> > \ sys_pll / sys1_pll
> >
> > This for each cluster, a single one for G12A, two for G12B.
> >
> > Each cpu_clk_premux1 tree is marked as read-only and CLK_SET_RATE_NO_REPARENT,
> > to be used as "parking" clock in a safe clock frequency.
> it seems that this is one case where the "coordinated clocks" feature
> would come handy: [0]
> Stephen, do you know if those patches stopped in March or if there's
> still some ongoing effort to get them ready?
>
Derek told me yesterday he wants to work on it again, but I don't know
his timeline. If Derek doesn't reply here then maybe it can be picked up
by someone else.
_______________________________________________
linux-amlogic mailing list
linux-amlogic@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-amlogic
WARNING: multiple messages have this Message-ID (diff)
From: Stephen Boyd <sboyd@kernel.org>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Neil Armstrong <narmstrong@baylibre.com>,
dbasehore@chromium.org
Cc: jbrunet@baylibre.com, khilman@baylibre.com,
linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org
Subject: Re: [RFC/RFT v3 07/14] clk: meson: g12a: add notifiers to handle cpu clock change
Date: Wed, 07 Aug 2019 21:43:21 -0700 [thread overview]
Message-ID: <20190808044322.30FC0217D7@mail.kernel.org> (raw)
In-Reply-To: <CAFBinCAnKeGYkyCmEMugWuQaSxgBp4DqtHN3b0rLJY6jwOF0QA@mail.gmail.com>
Quoting Martin Blumenstingl (2019-07-02 16:28:55)
> Hi Stephen, Hi Neil,
>
> On Mon, Jul 1, 2019 at 11:13 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
> >
> > In order to implement clock switching for the CLKID_CPU_CLK and
> > CLKID_CPUB_CLK, notifiers are added on specific points of the
> > clock tree :
> >
> > cpu_clk / cpub_clk
> > | \- cpu_clk_dyn
> > | | \- cpu_clk_premux0
> > | | |- cpu_clk_postmux0
> > | | | |- cpu_clk_dyn0_div
> > | | | \- xtal/fclk_div2/fclk_div3
> > | | \- xtal/fclk_div2/fclk_div3
> > | \- cpu_clk_premux1
> > | |- cpu_clk_postmux1
> > | | |- cpu_clk_dyn1_div
> > | | \- xtal/fclk_div2/fclk_div3
> > | \- xtal/fclk_div2/fclk_div3
> > \ sys_pll / sys1_pll
> >
> > This for each cluster, a single one for G12A, two for G12B.
> >
> > Each cpu_clk_premux1 tree is marked as read-only and CLK_SET_RATE_NO_REPARENT,
> > to be used as "parking" clock in a safe clock frequency.
> it seems that this is one case where the "coordinated clocks" feature
> would come handy: [0]
> Stephen, do you know if those patches stopped in March or if there's
> still some ongoing effort to get them ready?
>
Derek told me yesterday he wants to work on it again, but I don't know
his timeline. If Derek doesn't reply here then maybe it can be picked up
by someone else.
WARNING: multiple messages have this Message-ID (diff)
From: Stephen Boyd <sboyd@kernel.org>
To: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
Neil Armstrong <narmstrong@baylibre.com>,
dbasehore@chromium.org
Cc: khilman@baylibre.com, linux-kernel@vger.kernel.org,
linux-gpio@vger.kernel.org, linux-amlogic@lists.infradead.org,
linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
jbrunet@baylibre.com
Subject: Re: [RFC/RFT v3 07/14] clk: meson: g12a: add notifiers to handle cpu clock change
Date: Wed, 07 Aug 2019 21:43:21 -0700 [thread overview]
Message-ID: <20190808044322.30FC0217D7@mail.kernel.org> (raw)
In-Reply-To: <CAFBinCAnKeGYkyCmEMugWuQaSxgBp4DqtHN3b0rLJY6jwOF0QA@mail.gmail.com>
Quoting Martin Blumenstingl (2019-07-02 16:28:55)
> Hi Stephen, Hi Neil,
>
> On Mon, Jul 1, 2019 at 11:13 AM Neil Armstrong <narmstrong@baylibre.com> wrote:
> >
> > In order to implement clock switching for the CLKID_CPU_CLK and
> > CLKID_CPUB_CLK, notifiers are added on specific points of the
> > clock tree :
> >
> > cpu_clk / cpub_clk
> > | \- cpu_clk_dyn
> > | | \- cpu_clk_premux0
> > | | |- cpu_clk_postmux0
> > | | | |- cpu_clk_dyn0_div
> > | | | \- xtal/fclk_div2/fclk_div3
> > | | \- xtal/fclk_div2/fclk_div3
> > | \- cpu_clk_premux1
> > | |- cpu_clk_postmux1
> > | | |- cpu_clk_dyn1_div
> > | | \- xtal/fclk_div2/fclk_div3
> > | \- xtal/fclk_div2/fclk_div3
> > \ sys_pll / sys1_pll
> >
> > This for each cluster, a single one for G12A, two for G12B.
> >
> > Each cpu_clk_premux1 tree is marked as read-only and CLK_SET_RATE_NO_REPARENT,
> > to be used as "parking" clock in a safe clock frequency.
> it seems that this is one case where the "coordinated clocks" feature
> would come handy: [0]
> Stephen, do you know if those patches stopped in March or if there's
> still some ongoing effort to get them ready?
>
Derek told me yesterday he wants to work on it again, but I don't know
his timeline. If Derek doesn't reply here then maybe it can be picked up
by someone else.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-08-08 4:43 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 9:12 [RFC/RFT v3 00/14] arm64: g12a: add support for DVFS Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` [RFC/RFT v3 01/14] pinctrl: meson-g12a: add pwm_a on GPIOE_2 pinmux Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 22:56 ` Martin Blumenstingl
2019-07-02 22:56 ` Martin Blumenstingl
2019-07-02 22:56 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 02/14] clk: core: introduce clk_hw_set_parent() Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:05 ` Martin Blumenstingl
2019-07-02 23:05 ` Martin Blumenstingl
2019-07-02 23:05 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 03/14] clk: meson: regmap: export regmap_div ops functions Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` [RFC/RFT v3 04/14] clk: meson: eeclk: add setup callback Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:16 ` Martin Blumenstingl
2019-07-02 23:16 ` Martin Blumenstingl
2019-07-02 23:16 ` Martin Blumenstingl
2019-07-03 11:45 ` Neil Armstrong
2019-07-03 11:45 ` Neil Armstrong
2019-07-03 11:45 ` Neil Armstrong
2019-07-03 12:40 ` Jerome Brunet
2019-07-03 12:40 ` Jerome Brunet
2019-07-03 12:40 ` Jerome Brunet
2019-07-03 12:57 ` Martin Blumenstingl
2019-07-03 12:57 ` Martin Blumenstingl
2019-07-03 12:57 ` Martin Blumenstingl
2019-07-03 14:17 ` Jerome Brunet
2019-07-03 14:17 ` Jerome Brunet
2019-07-03 14:17 ` Jerome Brunet
2019-07-26 14:50 ` Neil Armstrong
2019-07-26 14:50 ` Neil Armstrong
2019-07-26 14:50 ` Neil Armstrong
2019-07-29 7:42 ` Jerome Brunet
2019-07-29 7:42 ` Jerome Brunet
2019-07-29 7:42 ` Jerome Brunet
2019-07-01 9:12 ` [RFC/RFT v3 05/14] soc: amlogic: meson-clk-measure: protect measure with a mutex Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:01 ` Martin Blumenstingl
2019-07-02 23:01 ` Martin Blumenstingl
2019-07-02 23:01 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 06/14] soc: amlogic: meson-clk-measure: add G12B second cluster cpu clk Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 22:58 ` Martin Blumenstingl
2019-07-02 22:58 ` Martin Blumenstingl
2019-07-02 22:58 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 07/14] clk: meson: g12a: add notifiers to handle cpu clock change Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:28 ` Martin Blumenstingl
2019-07-02 23:28 ` Martin Blumenstingl
2019-07-02 23:28 ` Martin Blumenstingl
2019-07-03 11:50 ` Neil Armstrong
2019-07-03 11:50 ` Neil Armstrong
2019-07-03 11:50 ` Neil Armstrong
2019-08-08 4:43 ` Stephen Boyd [this message]
2019-08-08 4:43 ` Stephen Boyd
2019-08-08 4:43 ` Stephen Boyd
2019-07-01 9:12 ` [RFC/RFT v3 08/14] clk: meson: g12a: expose CPUB clock ID for G12B Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:03 ` Martin Blumenstingl
2019-07-02 23:03 ` Martin Blumenstingl
2019-07-02 23:03 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 09/14] arm64: dts: move common G12A & G12B modes to meson-g12-common.dtsi Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:54 ` Martin Blumenstingl
2019-07-02 23:54 ` Martin Blumenstingl
2019-07-02 23:54 ` Martin Blumenstingl
2019-07-03 11:51 ` Neil Armstrong
2019-07-03 11:51 ` Neil Armstrong
2019-07-03 11:51 ` Neil Armstrong
2019-07-03 12:48 ` Jerome Brunet
2019-07-03 12:48 ` Jerome Brunet
2019-07-03 12:48 ` Jerome Brunet
2019-07-01 9:12 ` [RFC/RFT v3 10/14] arm64: dts: meson-g12-common: add pwm_a on GPIOE_2 pinmux Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:11 ` Martin Blumenstingl
2019-07-02 23:11 ` Martin Blumenstingl
2019-07-02 23:11 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 11/14] arm64: dts: meson-g12a: add cpus OPP table Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:47 ` Martin Blumenstingl
2019-07-02 23:47 ` Martin Blumenstingl
2019-07-02 23:47 ` Martin Blumenstingl
2019-07-03 11:53 ` Neil Armstrong
2019-07-03 11:53 ` Neil Armstrong
2019-07-03 11:53 ` Neil Armstrong
2019-07-03 12:12 ` Martin Blumenstingl
2019-07-03 12:12 ` Martin Blumenstingl
2019-07-03 12:12 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 12/14] arm64: dts: meson-g12a: enable DVFS on G12A boards Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:43 ` Martin Blumenstingl
2019-07-02 23:43 ` Martin Blumenstingl
2019-07-02 23:43 ` Martin Blumenstingl
2019-07-01 9:12 ` [RFC/RFT v3 13/14] arm64: dts: meson-g12b: add cpus OPP tables Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` [RFC/RFT v3 14/14] arm64: dts: meson-g12b-odroid-n2: enable DVFS Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-01 9:12 ` Neil Armstrong
2019-07-02 23:45 ` Martin Blumenstingl
2019-07-02 23:45 ` Martin Blumenstingl
2019-07-02 23:45 ` Martin Blumenstingl
2019-07-03 11:54 ` Neil Armstrong
2019-07-03 11:54 ` Neil Armstrong
2019-07-03 11:54 ` Neil Armstrong
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