<feed xmlns='http://www.w3.org/2005/Atom'>
<title>user/sven/linux.git/drivers/devfreq/Kconfig, branch v5.15.111</title>
<subtitle>Linux Kernel
</subtitle>
<id>https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v5.15.111</id>
<link rel='self' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v5.15.111'/>
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<updated>2021-05-21T04:16:21Z</updated>
<entry>
<title>PM / devfreq: imx8m-ddrc: Remove DEVFREQ_GOV_SIMPLE_ONDEMAND dependency</title>
<updated>2021-05-21T04:16:21Z</updated>
<author>
<name>Dong Aisheng</name>
<email>aisheng.dong@nxp.com</email>
</author>
<published>2021-05-21T03:16:39Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=a15fc9aa5b384e305ea25f42f744bb301fe39da0'/>
<id>urn:sha1:a15fc9aa5b384e305ea25f42f744bb301fe39da0</id>
<content type='text'>
The driver can't support simple ondemand governor due to missing
.get_dev_status() capability.

Signed-off-by: Dong Aisheng &lt;aisheng.dong@nxp.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: Fix the wrong set_freq path for userspace governor in Kconfig</title>
<updated>2021-04-08T04:14:50Z</updated>
<author>
<name>Dong Aisheng</name>
<email>aisheng.dong@nxp.com</email>
</author>
<published>2021-03-09T12:58:33Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=5f104f9fc1bb1423058b98b8a64b01af70f44547'/>
<id>urn:sha1:5f104f9fc1bb1423058b98b8a64b01af70f44547</id>
<content type='text'>
Fix the wrong set_freq path for userspace governor in Kconfig.

Signed-off-by: Dong Aisheng &lt;aisheng.dong@nxp.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: tegra20: Deprecate in a favor of emc-stat based driver</title>
<updated>2020-11-23T07:01:13Z</updated>
<author>
<name>Dmitry Osipenko</name>
<email>digetx@gmail.com</email>
</author>
<published>2020-11-23T00:27:15Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=98fd9972ed60d26915227a8c7febbd86e262a96b'/>
<id>urn:sha1:98fd9972ed60d26915227a8c7febbd86e262a96b</id>
<content type='text'>
Remove tegra20-devfreq in order to replace it with a EMC_STAT based
devfreq driver. Previously we were going to use MC_STAT based
tegra20-devfreq driver because EMC_STAT wasn't working properly, but
now that problem is resolved. This resolves complications imposed by
the removed driver since it was depending on both EMC and MC drivers
simultaneously.

Acked-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
Signed-off-by: Dmitry Osipenko &lt;digetx@gmail.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: tegra20: Relax Kconfig dependency</title>
<updated>2020-10-26T03:15:43Z</updated>
<author>
<name>Dmitry Osipenko</name>
<email>digetx@gmail.com</email>
</author>
<published>2020-10-25T22:17:31Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=cc2a4e83612040a3dc49966c6c4ac5088ed7037f'/>
<id>urn:sha1:cc2a4e83612040a3dc49966c6c4ac5088ed7037f</id>
<content type='text'>
The Tegra EMC driver now could be compiled as a loadable kernel module.
Currently devfreq driver depends on the EMC/MC drivers in Kconfig, and
thus, devfreq is forced to be a kernel module if EMC is compiled as a
module. This build dependency could be relaxed since devfreq driver
checks MC/EMC presence on probe, allowing kernel configuration where
devfreq is a built-in driver and EMC driver is a loadable module.
This change puts Tegra20 devfreq Kconfig entry on a par with the Tegra30
devfreq entry.

Acked-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
Signed-off-by: Dmitry Osipenko &lt;digetx@gmail.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: Add generic imx bus scaling driver</title>
<updated>2020-05-28T09:02:39Z</updated>
<author>
<name>Leonard Crestez</name>
<email>leonard.crestez@nxp.com</email>
</author>
<published>2020-04-06T12:03:07Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=5173a9756c8df9c387e04e49da0c4061951bbfec'/>
<id>urn:sha1:5173a9756c8df9c387e04e49da0c4061951bbfec</id>
<content type='text'>
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.

Signed-off-by: Leonard Crestez &lt;leonard.crestez@nxp.com&gt;
Tested-by: Martin Kepplinger &lt;martin.kepplinger@puri.sm&gt;
Acked-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: exynos: Rename Exynos to lowercase</title>
<updated>2020-01-06T01:50:09Z</updated>
<author>
<name>Krzysztof Kozlowski</name>
<email>krzk@kernel.org</email>
</author>
<published>2020-01-04T15:21:00Z</published>
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<id>urn:sha1:91d7f3f8f1346ac5899c7e25a0dbd409212cdf53</id>
<content type='text'>
Fix up inconsistent usage of upper and lowercase letters in "Exynos"
name.

"EXYNOS" is not an abbreviation but a regular trademarked name.
Therefore it should be written with lowercase letters starting with
capital letter.

The lowercase "Exynos" name is promoted by its manufacturer Samsung
Electronics Co., Ltd., in advertisement materials and on website.

Signed-off-by: Krzysztof Kozlowski &lt;krzk@kernel.org&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency</title>
<updated>2019-12-30T00:59:06Z</updated>
<author>
<name>Chanwoo Choi</name>
<email>cw00.choi@samsung.com</email>
</author>
<published>2019-12-12T02:20:30Z</published>
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<id>urn:sha1:eff5d31f7407fa9d31fb840106f1593399457298</id>
<content type='text'>
To build test, add COMPILE_TEST depedency to both ARM_RK3399_DMC_DEVFREQ
and DEVFREQ_EVENT_ROCKCHIP_DFI configuration. And ARM_RK3399_DMC_DEVFREQ
used the SMCCC interface so that add HAVE_ARM_SMCCC dependency to prevent
the build break.

Reported-by: kbuild test robot &lt;lkp@intel.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: Add dynamic scaling for imx8m ddr controller</title>
<updated>2019-12-30T00:59:05Z</updated>
<author>
<name>Leonard Crestez</name>
<email>leonard.crestez@nxp.com</email>
</author>
<published>2019-11-22T21:45:03Z</published>
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<id>urn:sha1:5af744ebae856a50e8b5e208a5acf28713a4ce98</id>
<content type='text'>
Add driver for dynamic scaling the DDR Controller on imx8m chips. Actual
frequency switching is implemented inside TF-A, this driver wraps the
SMC calls and synchronizes the clk tree.

The DRAM clocks on imx8m have the following structure (abridged):

 +----------+       |\            +------+
 | dram_pll |-------|M| dram_core |      |
 +----------+       |U|----------&gt;| D    |
                 /--|X|           |  D   |
   dram_alt_root |  |/            |   R  |
                 |                |    C |
            +---------+           |      |
            |FIX DIV/4|           |      |
            +---------+           |      |
  composite:     |                |      |
 +----------+    |                |      |
 | dram_alt |----/                |      |
 +----------+                     |      |
 | dram_apb |--------------------&gt;|      |
 +----------+                     +------+

The dram_pll is used for higher rates and dram_alt is used for lower
rates. The dram_alt and dram_apb clocks are "imx composite" and their
parent can also be modified.

This driver will prepare/enable the new parents ahead of switching (so
that the expected roots are enabled) and afterwards it will call
clk_set_parent to ensure the parents in clock framework are up-to-date.

The driver relies on dram_pll dram_alt and dram_apb being marked with
CLK_GET_RATE_NOCACHE for rate updates.

Signed-off-by: Leonard Crestez &lt;leonard.crestez@nxp.com&gt;
Acked-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
[cw00.choi: Edit the COMPILE_TEST module dependency in Kconfig]
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: Fix Kconfig indentation</title>
<updated>2019-12-30T00:59:05Z</updated>
<author>
<name>Krzysztof Kozlowski</name>
<email>krzk@kernel.org</email>
</author>
<published>2019-11-20T13:42:16Z</published>
<link rel='alternate' type='text/html' href='https://git.stealer.net/cgit.cgi/user/sven/linux.git/commit/?id=d96c60b48a0b51e4711f9cf88b8da520b521b432'/>
<id>urn:sha1:d96c60b48a0b51e4711f9cf88b8da520b521b432</id>
<content type='text'>
Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
	$ sed -e 's/^        /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski &lt;krzk@kernel.org&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
<entry>
<title>PM / devfreq: tegra: Add COMMON_CLK dependency</title>
<updated>2019-12-23T01:42:58Z</updated>
<author>
<name>Arnd Bergmann</name>
<email>arnd@arndb.de</email>
</author>
<published>2019-12-12T01:56:31Z</published>
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<id>urn:sha1:5fdb0684b5b0f41402161f068d3d84bf6ed1c3f4</id>
<content type='text'>
Compile-testing this driver fails if CONFIG_COMMON_CLK is not set:

drivers/devfreq/tegra30-devfreq.o: In function `tegra_devfreq_target':
tegra30-devfreq.c:(.text+0x164): undefined reference to `clk_set_min_rate'

Fixes: 35f8dbc72721 ("PM / devfreq: tegra: Enable COMPILE_TEST for the driver")
Signed-off-by: Arnd Bergmann &lt;arnd@arndb.de&gt;
Reviewed-by: Dmitry Osipenko &lt;digetx@gmail.com&gt;
Signed-off-by: Chanwoo Choi &lt;cw00.choi@samsung.com&gt;
</content>
</entry>
</feed>
