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From: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>,
	Mike Turquette <mturquette@linaro.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	"Joe.C" <yingjoe.chen@mediatek.com>,
	Eddie Huang <eddie.huang@mediatek.com>,
	Howard Chen <ibanezchen@gmail.com>,
	"fan.chen@mediatek.com" <fan.chen@mediatek.com>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	"linaro-kernel@lists.linaro.org" <linaro-kernel@lists.linaro.org>,
	"linux-mediatek@lists.infradead.org" 
	<linux-mediatek@lists.infradead.org>
Subject: Re: [PATCH 1/2] cpufreq: mediatek: Add MT8173 cpufreq driver
Date: Fri, 24 Apr 2015 14:50:04 +0800	[thread overview]
Message-ID: <CALx668W_rj8_UBory5fVa4_i3vLCjgApYCwHoSthXNmx79yH1g@mail.gmail.com> (raw)
In-Reply-To: <20150423125620.GB29702@leverpostej>

On Thu, Apr 23, 2015 at 8:56 PM, Mark Rutland <mark.rutland@arm.com> wrote:
>> +/*
>> + * This is a temporary solution until we have new OPPv2 bindings. Therefore we
>> + * could describe the OPPs with (freq, volt, volt) tuple properly in device
>> + * tree.
>> + */
>> +
>> +/* OPP table for LITTLE cores of MT8173 */
>> +struct mtk_cpu_opp mt8173_l_opp[] = {
>> +       OPP(507000000, 859000, 0),
>> +       OPP(702000000, 908000, 0),
>> +       OPP(1001000000, 983000, 0),
>> +       OPP(1105000000, 1009000, 0),
>> +       OPP(1183000000, 1028000, 0),
>> +       OPP(1404000000, 1083000, 0),
>> +       OPP(1508000000, 1109000, 0),
>> +       OPP(1573000000, 1125000, 0),
>> +};
>> +
>> +/* OPP table for big cores of MT8173 */
>> +struct mtk_cpu_opp mt8173_b_opp[] = {
>> +       OPP(507000000, 828000, 928000),
>> +       OPP(702000000, 867000, 967000),
>> +       OPP(1001000000, 927000, 1027000),
>> +       OPP(1209000000, 968000, 1068000),
>> +       OPP(1404000000, 1007000, 1107000),
>> +       OPP(1612000000, 1049000, 1149000),
>> +       OPP(1807000000, 1089000, 1150000),
>> +       OPP(1989000000, 1125000, 1150000),
>> +};
>
> We should sort out the OPP bindings if we need to sort out the OPP
> bindings. We can't remove these once they're in without causing pain for
> everyone with an old DTB.

So even we have a new OPP binding to describe the OPP, we have to
leave these table as they are for backward compatibility?

Best Regards,
Pi-Cheng

>
> Mark.

  reply	other threads:[~2015-04-24  6:50 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-20  9:27 [PATCH v3 0/2] cpufreq: add cpufreq driver for Mediatek MT8173 SoC pi-cheng.chen
2015-04-20  9:27 ` [PATCH 1/2] cpufreq: mediatek: Add MT8173 cpufreq driver pi-cheng.chen
2015-04-20 14:17   ` Josh Cartwright
2015-04-20 18:31     ` Paul Bolle
2015-04-22  3:11     ` Pi-Cheng Chen
2015-04-22 14:33       ` Josh Cartwright
2015-04-20 18:28   ` Paul Bolle
2015-04-22  3:14     ` Pi-Cheng Chen
2015-04-23 12:01   ` Sascha Hauer
2015-04-24  6:46     ` Pi-Cheng Chen
2015-04-24 12:55       ` Sascha Hauer
2015-05-07  9:42         ` Pi-Cheng Chen
2015-04-23 12:56   ` Mark Rutland
2015-04-24  6:50     ` Pi-Cheng Chen [this message]
2015-04-29  6:06       ` Viresh Kumar
2015-04-30  7:42   ` Sascha Hauer
2015-05-07  9:40     ` Pi-Cheng Chen
2015-04-20  9:27 ` [PATCH 2/2] ARM64: mt8173: dts Add MT8173 cpufreq driver support pi-cheng.chen
2015-04-23 12:53   ` Mark Rutland
2015-04-24  7:09     ` Pi-Cheng Chen
2015-05-18 13:29       ` Pi-Cheng Chen

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