From: Marco Felsch <m.felsch@pengutronix.de>
To: Leonard Crestez <leonard.crestez@nxp.com>
Cc: "Angus Ainslie" <angus@akkea.ca>, "Jacky Bai" <ping.bai@nxp.com>,
"Mark Rutland" <mark.rutland@arm.com>,
"Artur Świgoń" <a.swigon@partner.samsung.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
"Viresh Kumar" <viresh.kumar@linaro.org>,
"Michael Turquette" <mturquette@baylibre.com>,
"Alexandre Bailon" <abailon@baylibre.com>,
"Matthias Kaehlcke" <mka@chromium.org>,
"Abel Vesa" <abel.vesa@nxp.com>,
"Anson Huang" <anson.huang@nxp.com>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Chanwoo Choi" <cw00.choi@samsung.com>,
"MyungJoo Ham" <myungjoo.ham@samsung.com>,
dl-linux-imx <linux-imx@nxp.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Martin Kepplinger" <martink@posteo.de>,
"Silvano Di Ninno" <silvano.dininno@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"Aisheng Dong" <aisheng.dong@nxp.com>,
"Saravana Kannan" <saravanak@google.com>,
"Stephen Boyd" <sboyd@kernel.org>,
"Kyungmin Park" <kyungmin.park@samsung.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
"Fabio Estevam" <fabio.estevam@nxp.com>,
"Shawn Guo" <shawnguo@kernel.org>,
"Georgi Djakov" <georgi.djakov@linaro.org>
Subject: Re: [PATCH RFC v6 2/9] PM / devfreq: Add generic imx bus scaling driver
Date: Wed, 20 Nov 2019 16:29:22 +0100 [thread overview]
Message-ID: <20191120152922.vaisxxyizqgjsnld@pengutronix.de> (raw)
In-Reply-To: <VI1PR04MB70233920AC838AD88E1ECC26EE4F0@VI1PR04MB7023.eurprd04.prod.outlook.com>
Hi Leonard,
On 19-11-20 15:04, Leonard Crestez wrote:
> On 20.11.2019 16:08, Angus Ainslie wrote:
> > Hi Leonard,
> >
> > On 2019-11-14 12:09, Leonard Crestez wrote:
> >> Add initial support for dynamic frequency switching on pieces of the
> >> imx
> >> interconnect fabric.
> >>
> >> All this driver does is set a clk rate based on an opp table, it does
> >> not map register areas.
> >>
> >
> > Is this working with mainline ATF or does it still need to be used with
> > your modified ATF code ?
>
> This series doesn't perform SMC calls, that's done by the imx8m-ddrc
> driver: https://patchwork.kernel.org/cover/11244283/
>
> This particular patch allows switching NOC frequency but that's just
> clk_set_rate.
>
> DDRC frequency switching requires the imx branch of ATF (v2.0 + ~200
> patches) otherwise you will get probe failures. Source for imx atf is
> published here: https://source.codeaurora.org/external/imx/imx-atf/
>
> For your particular 8mq B0 case slightly different setpoints are used
> and the fix is not in any public release yet so you need this:
>
> https://github.com/cdleonard/arm-trusted-firmware/commits/imx_2.0.y_busfreq
>
> Is "mainline ATF" an important criteria for Purism?
Sorry for jumping in here. Just asking myself if the nxp-atf is required
for a mainline kernel for the imx8mq devices?
Thanks,
Marco
> --
> Regards,
> Leonard
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
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next prev parent reply other threads:[~2019-11-20 15:29 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-14 20:09 [PATCH RFC v6 0/9] interconnect: Add imx support via devfreq Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 1/9] dt-bindings: interconnect: Add bindings for imx8m noc Leonard Crestez
2019-12-16 1:12 ` Chanwoo Choi
2019-12-16 3:25 ` Chanwoo Choi
2019-12-16 15:09 ` Leonard Crestez
2019-12-17 0:15 ` Chanwoo Choi
2019-12-19 14:31 ` Leonard Crestez
2019-12-19 15:55 ` Chanwoo Choi
2019-12-19 19:11 ` Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 2/9] PM / devfreq: Add generic imx bus scaling driver Leonard Crestez
2019-11-20 14:08 ` Angus Ainslie
2019-11-20 15:04 ` Leonard Crestez
2019-11-20 15:29 ` Marco Felsch [this message]
2019-11-20 15:41 ` Angus Ainslie
2019-11-20 16:30 ` Leonard Crestez
2019-11-20 16:38 ` Angus Ainslie
2019-11-20 18:02 ` Leonard Crestez
2020-02-04 9:45 ` Martin Kepplinger
2020-02-13 10:53 ` Martin Kepplinger
2019-12-13 1:30 ` Chanwoo Choi
2019-12-13 1:51 ` Chanwoo Choi
2019-12-16 1:06 ` Chanwoo Choi
2019-12-16 14:57 ` Leonard Crestez
2019-12-17 0:41 ` Chanwoo Choi
2019-12-17 21:05 ` Leonard Crestez
2019-12-18 3:15 ` Chanwoo Choi
2019-12-18 10:10 ` Leonard Crestez
2019-12-18 10:46 ` Chanwoo Choi
2019-12-18 17:06 ` Chanwoo Choi
2019-11-14 20:09 ` [PATCH RFC v6 3/9] PM / devfreq: imx: Register interconnect device Leonard Crestez
2019-12-13 4:28 ` Chanwoo Choi
2019-12-16 15:00 ` Leonard Crestez
2019-12-17 1:02 ` Chanwoo Choi
2019-12-18 10:13 ` Leonard Crestez
2019-12-18 11:05 ` Chanwoo Choi
2019-12-18 17:13 ` Leonard Crestez
2019-12-19 7:07 ` Chanwoo Choi
2019-11-14 20:09 ` [PATCH RFC v6 4/9] interconnect: Add imx core driver Leonard Crestez
2019-12-12 7:29 ` Georgi Djakov
2019-12-19 0:18 ` Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 5/9] interconnect: imx: Add platform driver for imx8mm Leonard Crestez
2019-12-12 7:35 ` Georgi Djakov
2019-12-16 14:35 ` Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 6/9] interconnect: imx: Add platform driver for imx8mq Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 7/9] interconnect: imx: Add platform driver for imx8mn Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 8/9] arm64: dts: imx8m: Add NOC nodes Leonard Crestez
2019-11-14 20:09 ` [PATCH RFC v6 9/9] arm64: dts: imx8m: Add interconnect provider properties Leonard Crestez
2019-12-11 9:53 ` [PATCH RFC v6 0/9] interconnect: Add imx support via devfreq Leonard Crestez
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