Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753130Ab1BOQVA (ORCPT ); Tue, 15 Feb 2011 11:21:00 -0500 Received: from mail-pv0-f174.google.com ([74.125.83.174]:36620 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752289Ab1BOQUz (ORCPT ); Tue, 15 Feb 2011 11:20:55 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:content-type:date:message-id:mime-version :x-mailer:content-transfer-encoding; b=HSPYSVyv05+AbtzAjNXnEHuhjp33Eon1plDiSSDt7s4zE/w8us9C29eVghz1nzTLUx b/K34rw6l+0J0pRCLBqS3S8pxAPiaEJ6C0dSGJBAhxdyb1FWTLuBBDzWI7GuZ4i2RVg3 guONGIudqakX7azKhdpph18MCccXEqkGXCL2I= Subject: [PATCH] ARM: pxa: support 806MHz operating points for PXA31x processors A2 stepping From: Axel Lin To: linux-kernel@vger.kernel.org Cc: Igor Grinberg , Eric Miao , Russell King , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="UTF-8" Date: Wed, 16 Feb 2011 00:20:49 +0800 Message-ID: <1297786849.2596.13.camel@phoenix> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2128 Lines: 65 PXA3xx Specification Update document states that the 806MHz operating points were added for PXA31x processors A2 stepping. This patch adds 806MHz operating points support for PXA31x A2 stepping. Signed-off-by: Axel Lin --- I cannot find any details for PXA31x stepping B1 and B2, thus I made this patch for PXA31x stepping A2 only. Axel arch/arm/mach-pxa/cpufreq-pxa3xx.c | 23 +++++++++++++++++++---- 1 files changed, 19 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-pxa/cpufreq-pxa3xx.c b/arch/arm/mach-pxa/cpufreq-pxa3xx.c index 88fbec0..f4f0c2e 100644 --- a/arch/arm/mach-pxa/cpufreq-pxa3xx.c +++ b/arch/arm/mach-pxa/cpufreq-pxa3xx.c @@ -210,15 +210,30 @@ static int pxa3xx_cpufreq_init(struct cpufreq_policy *policy) /* set default policy and cpuinfo */ policy->cpuinfo.min_freq = 104000; - policy->cpuinfo.max_freq = (cpu_is_pxa320()) ? 806000 : 624000; + + if (cpu_is_pxa300()) + policy->cpuinfo.max_freq = 624000; + else if (cpu_is_pxa310()) + policy->cpuinfo.max_freq = ((read_cpuid_id() & 0xf) == 0x2) ? + 806000 : 624000; + else if (cpu_is_pxa320()) + policy->cpuinfo.max_freq = 806000; + policy->cpuinfo.transition_latency = 1000; /* FIXME: 1 ms, assumed */ policy->max = pxa3xx_get_clk_frequency_khz(0); policy->cur = policy->min = policy->max; - if (cpu_is_pxa300() || cpu_is_pxa310()) + if (cpu_is_pxa300()) ret = setup_freqs_table(policy, ARRAY_AND_SIZE(pxa300_freqs)); - - if (cpu_is_pxa320()) + else if (cpu_is_pxa310()) + /* PXA310 A2 STEPPING supports 806Mhz operating points */ + if ((read_cpuid_id() & 0xf) == 0x2) + ret = setup_freqs_table(policy, + ARRAY_AND_SIZE(pxa320_freqs)); + else + ret = setup_freqs_table(policy, + ARRAY_AND_SIZE(pxa300_freqs)); + else if (cpu_is_pxa320()) ret = setup_freqs_table(policy, ARRAY_AND_SIZE(pxa320_freqs)); if (ret) { -- 1.7.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/