From: javier@osg•samsung.com (Javier Martinez Canillas)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v5 3/7] ARM: dts: Exynos542x/5800: add CPU OPP properties
Date: Fri, 11 Dec 2015 00:25:37 -0300 [thread overview]
Message-ID: <566A4231.9050608@osg.samsung.com> (raw)
In-Reply-To: <20151211031646.GL3612@ubuntu>
Hello Viresh,
On 12/11/2015 12:16 AM, Viresh Kumar wrote:
> On 10-12-15, 17:58, Bartlomiej Zolnierkiewicz wrote:
>> diff --git a/arch/arm/boot/dts/exynos5422-cpus.dtsi b/arch/arm/boot/dts/exynos5422-cpus.dtsi
>> index b7f60c8..9a5131d 100644
>> --- a/arch/arm/boot/dts/exynos5422-cpus.dtsi
>> +++ b/arch/arm/boot/dts/exynos5422-cpus.dtsi
>> @@ -20,8 +20,10 @@
>> device_type = "cpu";
>> compatible = "arm,cortex-a7";
>> reg = <0x100>;
>> + clocks = <&clock CLK_KFC_CLK>;
>> clock-frequency = <1000000000>;
>> cci-control-port = <&cci_control0>;
>> + operating-points-v2 = <&cpu1_opp_table>;
>> };
>
> Why do you need to update this file? This file is included by
> exynos5422-odroidxu3-common.dtsi, which already inherits cpus nodes
> from exynos5800.dtsi (which inherits exynos5420.dtsi).
>
> i.e. operating-points-v2 should already be set.
>
The problem is that the big and LITTLE cores have different ordering per SoCs:
- Exynos5420 and Exynos5800: cpu0-3 (Cortex-A15) and cpu4-7 (Coretx-A7)
- Exynos5422: cpu0-3 (Cortex-A7) and cpu4-7 (Cortex-A15)
So the OPP tables are set in this DTSI file, to prevent the OPP tables
in the Exynos5422 to be inverted for the cluster 0 and 1.
Best regards,
--
Javier Martinez Canillas
Open Source Group
Samsung Research America
next prev parent reply other threads:[~2015-12-11 3:25 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 16:58 [PATCH v5 0/7] cpufreq: add generic cpufreq driver support for Exynos542x/5800 platforms Bartlomiej Zolnierkiewicz
2015-12-10 16:58 ` [PATCH v5 1/7] ARM: dts: Exynos542x/5800: add cluster regulator supply properties Bartlomiej Zolnierkiewicz
2015-12-11 1:16 ` Krzysztof Kozlowski
2015-12-10 16:58 ` [PATCH v5 2/7] clk: samsung: exynos5420: add cpu clock configuration data and instantiate cpu clock Bartlomiej Zolnierkiewicz
2015-12-10 16:58 ` [PATCH v5 3/7] ARM: dts: Exynos542x/5800: add CPU OPP properties Bartlomiej Zolnierkiewicz
2015-12-11 1:17 ` Krzysztof Kozlowski
2015-12-11 3:16 ` Viresh Kumar
2015-12-11 3:25 ` Javier Martinez Canillas [this message]
2015-12-11 3:32 ` Viresh Kumar
2015-12-11 4:00 ` Krzysztof Kozlowski
2015-12-11 4:13 ` Viresh Kumar
2015-12-11 4:18 ` Krzysztof Kozlowski
2015-12-11 4:38 ` Viresh Kumar
2015-12-11 4:53 ` Krzysztof Kozlowski
2015-12-11 4:53 ` Javier Martinez Canillas
2015-12-11 5:28 ` Krzysztof Kozlowski
2015-12-11 5:41 ` Viresh Kumar
2015-12-11 4:39 ` Viresh Kumar
2015-12-10 16:58 ` [PATCH v5 4/7] ARM: Exynos: use generic cpufreq driver for Exynos5420 Bartlomiej Zolnierkiewicz
2015-12-11 1:18 ` Krzysztof Kozlowski
2015-12-10 16:58 ` [PATCH v5 5/7] clk: samsung: exynos5422/5800: fix cpu clock configuration data Bartlomiej Zolnierkiewicz
2015-12-10 16:58 ` [PATCH v5 6/7] ARM: dts: Exynos5800: fix CPU OPP Bartlomiej Zolnierkiewicz
2015-12-11 1:27 ` Krzysztof Kozlowski
2015-12-10 16:58 ` [PATCH v5 7/7] ARM: Exynos: use generic cpufreq driver for Exynos5422/5800 Bartlomiej Zolnierkiewicz
2015-12-11 1:27 ` Krzysztof Kozlowski
2015-12-11 1:34 ` [PATCH v5 0/7] cpufreq: add generic cpufreq driver support for Exynos542x/5800 platforms Krzysztof Kozlowski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=566A4231.9050608@osg.samsung.com \
--to=javier@osg$(echo .)samsung.com \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox