From patchwork Tue Dec 8 02:37:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuosheng Huang X-Patchwork-Id: 11957447 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 0F126C433FE for ; Tue, 8 Dec 2020 02:38:57 +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 AB52223433 for ; Tue, 8 Dec 2020 02:38:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB52223433 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=eR/Diy6ZTwqrImSvjeuNl12lQXSDTIxd2iuhlX3MZIc=; b=HVd3vsTwkqw4EP7Rsuht9Iri04 hy0xFOoKqcoGK6OSBhkA4uD6rlsmXVUAj29OGmrwJYYpIdzRGqe2NNN+VtaxhKZBa3lrSyH/lPToj N97oQ+dpITMto/Px80+Rk0seFov7QbJ/yC1xeJ54w3YL3K3WgldcBFRg5zK6dcuimU8kJzzh2O0T1 Letb6u+pl3KwzEYgQ+NQKN6t8t2RxYtWYF6jOVCKyijQHVqLiEcp92A7qkx66E2QXUIhPGbrjrKAq nJcQ4/LH5DifY32OyimmGSdGPM+On2dxq/8ZaEi0U8Vh86ZEUn0H6IW1yaaBnX/aO4DOb4eI4RdQA Xtr5k++Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kmSsk-0003Z2-N1; Tue, 08 Dec 2020 02:37:38 +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 1kmSsi-0003YK-Fr for linux-arm-kernel@lists.infradead.org; Tue, 08 Dec 2020 02:37:37 +0000 X-Alimail-AntiSpam: AC=CONTINUE; BC=0.09102429|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_regular_dialog|0.259475-0.000416156-0.740109; FP=13177509390828733794|2|2|9|0|-1|-1|-1; HT=ay29a033018047190; MF=huangshuosheng@allwinnertech.com; NM=1; PH=DS; RN=10; RT=10; SR=0; TI=SMTPD_---.J4MSblz_1607395050; Received: from allwinnertech.com(mailfrom:huangshuosheng@allwinnertech.com fp:SMTPD_---.J4MSblz_1607395050) by smtp.aliyun-inc.com(10.147.40.200); Tue, 08 Dec 2020 10:37:32 +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 Subject: [PATCH v3 2/6] cpufreq: sun50i: add a100 cpufreq support Date: Tue, 8 Dec 2020 10:37:28 +0800 Message-Id: <20201208023728.22603-1-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-20201207_213736_839265_B12D5B69 X-CRM114-Status: GOOD ( 13.15 ) 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 da23d581a4b4..def4a19abe16 100644 --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c @@ -25,6 +25,9 @@ #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 { u32 (*efuse_xlate)(void *efuse); }; @@ -55,6 +58,30 @@ static u32 sun50i_h6_efuse_xlate(struct nvmem_cell *speedbin_nvmem) return 0; } +static u32 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 @@ -188,8 +215,13 @@ 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 }, {} };