From patchwork Tue Dec 8 07:19:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuosheng Huang X-Patchwork-Id: 11957709 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0AEF4C4361B for ; Tue, 8 Dec 2020 07:21:24 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 90ADE23A69 for ; Tue, 8 Dec 2020 07:21:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 90ADE23A69 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=allwinnertech.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=kzs6Ojy1JQXHneoikUdcLndzlLunSF4IbSMq9WjC3HA=; b=p30yOC8pV182xCJxfqp2FmJtC6 +kRE5mh/wOhL+MRn55Y5FsCj2CXs33lyZO1hGh/zZS/updJ5T6B10Z5eNAwwVNW7embDCyKsYLvSf AXtMrseA16ZnoI7T5BJRmjRWHu2tQW30Exn9kFrYAEErGCK164XhpKkXq3j3psUfYMCyfvtAuS1Mg jMA94eX6issiHO50H8vQO7MD43lwHqw3X+/VWM+QwAXem0snvtOgIhVBr+UuFMlBsfJbfden7mzV9 bKvjq2DLTL/y7LPl2EW+BWa+wevnTcIf1Ii4YxGAxiyF+dC2IPw15Y4fnMuZpGQhSeqkdBE1/ZN1/ DAJpqsBg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kmXI4-00058O-Ft; Tue, 08 Dec 2020 07:20:04 +0000 Received: from smtp2207-205.mail.aliyun.com ([121.197.207.205]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kmXI1-00057O-VB for linux-arm-kernel@lists.infradead.org; Tue, 08 Dec 2020 07:20:03 +0000 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.08415567|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_regular_dialog|0.139034-0.000198243-0.860768; FP=0|0|0|0|0|-1|-1|-1; HT=ay29a033018047203; MF=huangshuosheng@allwinnertech.com; NM=1; PH=DS; RN=11; RT=11; SR=0; TI=SMTPD_---.J4Tts0T_1607411995; Received: from allwinnertech.com(mailfrom:huangshuosheng@allwinnertech.com fp:SMTPD_---.J4Tts0T_1607411995) by smtp.aliyun-inc.com(10.147.40.233); Tue, 08 Dec 2020 15:19:58 +0800 From: Shuosheng Huang To: tiny.windzz@gmail.com, rjw@rjwysocki.net, viresh.kumar@linaro.org, mripard@kernel.org, wens@csie.org, jernej.skrabec@siol.net, samuel@sholland.org Subject: [PATCH v4 2/6] cpufreq: sun50i: add a100 cpufreq support Date: Tue, 8 Dec 2020 15:19:53 +0800 Message-Id: <20201208071953.24536-1-huangshuosheng@allwinnertech.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201208_022002_471369_6057989B X-CRM114-Status: GOOD ( 13.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Shuosheng Huang , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add cpufreq nvmem based for allwinner a100 SoC, it's similar to h6. Signed-off-by: Shuosheng Huang --- drivers/cpufreq/cpufreq-dt-platdev.c | 1 + drivers/cpufreq/sun50i-cpufreq-nvmem.c | 32 ++++++++++++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c index 3776d960f405..2ebf5d9cb616 100644 --- a/drivers/cpufreq/cpufreq-dt-platdev.c +++ b/drivers/cpufreq/cpufreq-dt-platdev.c @@ -102,6 +102,7 @@ static const struct of_device_id whitelist[] __initconst = { */ static const struct of_device_id blacklist[] __initconst = { { .compatible = "allwinner,sun50i-h6", }, + { .compatible = "allwinner,sun50i-a100", }, { .compatible = "calxeda,highbank", }, { .compatible = "calxeda,ecx-2000", }, diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c index 3c0531938d1a..aead98164373 100644 --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c @@ -22,6 +22,9 @@ #define SUN50I_H6_NVMEM_MASK 0x7 #define SUN50I_H6_NVMEM_SHIFT 5 +#define SUN50I_A100_NVMEM_MASK 0xf +#define SUN50I_A100_NVMEM_SHIFT 12 + struct sunxi_cpufreq_soc_data { int (*efuse_xlate)(struct nvmem_cell *speedbin_nvmem); }; @@ -52,6 +55,30 @@ static int sun50i_h6_efuse_xlate(struct nvmem_cell *speedbin_nvmem) return 0; } +static int sun50i_a100_efuse_xlate(struct nvmem_cell *speedbin_nvmem) +{ + size_t len; + u32 *speedbin; + u32 efuse_value; + + speedbin = nvmem_cell_read(speedbin_nvmem, &len); + if (IS_ERR(speedbin)) + return PTR_ERR(speedbin); + + efuse_value = (*(u16 *)efuse >> SUN50I_A100_NVMEM_SHIFT) & + SUN50I_A100_NVMEM_MASK; + kfree(speedbin); + + switch (efuse_value) { + case 0b100: + return 2; + case 0b010: + return 1; + default: + return 0; + } +} + /** * sun50i_cpufreq_get_efuse() - Determine speed grade from efuse value * @soc_data: pointer to sunxi_cpufreq_soc_data context @@ -184,8 +211,13 @@ static const struct sunxi_cpufreq_soc_data sun50i_h6_data = { .efuse_xlate = sun50i_h6_efuse_xlate, }; +static const struct sunxi_cpufreq_soc_data sun50i_a100_data = { + .efuse_xlate = sun50i_a100_efuse_xlate, +}; + static const struct of_device_id sun50i_cpufreq_match_list[] = { { .compatible = "allwinner,sun50i-h6", .data = &sun50i_h6_data }, + { .compatible = "allwinner,sun50i-a100", .data = &sun50i_a100_data }, {} };