From: Leonard Crestez <leonard.crestez@nxp.com>
To: "myungjoo.ham@samsung.com" <myungjoo.ham@samsung.com>,
Stephen Boyd <sboyd@kernel.org>,
Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Artur Swigon <a.swigon@partner.samsung.com>,
Saravana Kannan <saravanak@google.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
Alexandre Bailon <abailon@baylibre.com>,
Georgi Djakov <georgi.djakov@linaro.org>,
Aisheng Dong <aisheng.dong@nxp.com>,
Abel Vesa <abel.vesa@nxp.com>, Jacky Bai <ping.bai@nxp.com>,
Anson Huang <anson.huang@nxp.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
dl-linux-imx <linux-imx@nxp.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 3/7] PM / devfreq: Add generic imx bus driver
Date: Tue, 13 Aug 2019 03:02:31 +0000 [thread overview]
Message-ID: <VI1PR04MB7023485353FCBBD7F8BEE8F3EED20@VI1PR04MB7023.eurprd04.prod.outlook.com> (raw)
In-Reply-To: 20190813023338epcms1p307caf6727399e9f3e320b965fb95a603@epcms1p3
On 8/13/2019 5:33 AM, MyungJoo Ham wrote:
>> Add initial support for dynamic frequency switching on pieces of the imx
>> interconnect fabric.
>>
>> All this driver actually does is set a clk rate based on an opp table.
>>
>> +config ARM_IMX_DEVFREQ
>> + tristate "i.MX DEVFREQ Driver"
>> + depends on ARCH_MXC || COMPILE_TEST
>> + select DEVFREQ_GOV_PASSIVE
>> + select DEVFREQ_GOV_SIMPLE_ONDEMAND
>> + select DEVFREQ_GOV_USERSPACE
>> + select PM_OPP
>
> Does it support ALL ARCH_MXC SoCs?
Only imx8m currently but out of tree we support bus+dram frequency
switching for ~10 imx6/7 SOCs, all other than imx7ulp.
When imx8 was upstreamed as the first 64-bit imx chip the arm64
maintainers told us to drop stuff like ARCH_FSL_IMX8MM so there is no
per-soc kconfig more specific than "ARCH_MXC".
I guess we could make it depend on (ARCH_MXC && ARM64) but the ARM64
would eventually be dropped anyway.
--
Regards,
Leonard
prev parent reply other threads:[~2019-08-13 3:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-12 18:49 [PATCH 0/7] PM / devfreq: Add initial imx support Leonard Crestez
2019-08-12 18:49 ` [PATCH 1/7] clk: imx8m: Set CLK_GET_RATE_NOCACHE on dram_alt/apb Leonard Crestez
2019-08-12 18:49 ` [PATCH 2/7] dt-bindings: devfreq: Add bindings for generic imx buses Leonard Crestez
2019-08-12 19:46 ` Rob Herring
2019-08-13 1:32 ` Leonard Crestez
2019-08-13 14:06 ` Rob Herring
2019-08-13 14:59 ` Leonard Crestez
2019-08-12 18:49 ` [PATCH 3/7] PM / devfreq: Add generic imx bus driver Leonard Crestez
2019-08-12 18:49 ` [PATCH 4/7] dt-bindings: devfreq: Add bindings for imx ddr controller Leonard Crestez
2019-08-12 19:51 ` Rob Herring
2019-08-12 18:49 ` [PATCH 5/7] PM / devfreq: Add dynamic scaling " Leonard Crestez
2019-08-12 18:49 ` [PATCH 6/7] PM / devfreq: imx-ddrc: Measure bandwidth with perf Leonard Crestez
2019-08-12 18:49 ` [PATCH 7/7] arm64: dts: imx8mm: Add devfreq nodes Leonard Crestez
[not found] ` <CGME20190812185002epcas1p1c528b12d20771cf4887907fdfd716e22@epcms1p2>
2019-08-13 2:25 ` [PATCH 2/7] dt-bindings: devfreq: Add bindings for generic imx buses MyungJoo Ham
[not found] ` <CGME20190812185005epcas3p10a9a3dbb90489534222e093c63f27900@epcms1p3>
2019-08-13 2:33 ` [PATCH 3/7] PM / devfreq: Add generic imx bus driver MyungJoo Ham
2019-08-13 3:02 ` Leonard Crestez [this message]
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