From nobody Sun Sep 22 07:45:48 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7451C433F5 for ; Fri, 8 Apr 2022 04:59:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234593AbiDHFBy (ORCPT ); Fri, 8 Apr 2022 01:01:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234370AbiDHFB3 (ORCPT ); Fri, 8 Apr 2022 01:01:29 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 188C319E087; Thu, 7 Apr 2022 21:59:17 -0700 (PDT) X-UUID: 2ebd49f3c18041c8b53b67535a2e7c82-20220408 X-UUID: 2ebd49f3c18041c8b53b67535a2e7c82-20220408 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1150491066; Fri, 08 Apr 2022 12:59:12 +0800 Received: from mtkexhb02.mediatek.inc (172.21.101.103) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Fri, 8 Apr 2022 12:59:12 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkexhb02.mediatek.inc (172.21.101.103) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 8 Apr 2022 12:59:11 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 8 Apr 2022 12:59:11 +0800 From: Rex-BC Chen To: , , , CC: , , , , , , , , , , "Andrew-sh . Cheng" , Rex-BC Chen Subject: [PATCH V2 05/15] cpufreq: mediatek: Enable clocks and regulators Date: Fri, 8 Apr 2022 12:58:58 +0800 Message-ID: <20220408045908.21671-6-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220408045908.21671-1-rex-bc.chen@mediatek.com> References: <20220408045908.21671-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Jia-Wei Chang We need to enable regulators so that the max and min requested values will be recorded. The intermediate clock is not always enabled by CCF in different projects, so we should enable it in the cpufreq driver. Signed-off-by: Andrew-sh.Cheng Signed-off-by: Jia-Wei Chang Signed-off-by: Rex-BC Chen Reviewed-by: AngeloGioacchino Del Regno --- drivers/cpufreq/mediatek-cpufreq.c | 50 +++++++++++++++++++++++++++--- 1 file changed, 45 insertions(+), 5 deletions(-) diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-= cpufreq.c index 2a2859dbc5e0..dc4a87e68940 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -332,10 +332,23 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs= _info *info, int cpu) goto out_free_resources; } =20 + ret =3D regulator_enable(info->proc_reg); + if (ret) { + dev_warn(cpu_dev, "cpu%d: failed to enable vproc\n", cpu); + goto out_free_resources; + } + /* Both presence and absence of sram regulator are valid cases. */ info->sram_reg =3D regulator_get_exclusive(cpu_dev, "sram"); if (IS_ERR(info->sram_reg)) info->sram_reg =3D NULL; + else { + ret =3D regulator_enable(info->sram_reg); + if (ret) { + dev_warn(cpu_dev, "cpu%d: failed to enable vsram\n", cpu); + goto out_free_resources; + } + } =20 /* Get OPP-sharing information from "operating-points-v2" bindings */ ret =3D dev_pm_opp_of_get_sharing_cpus(cpu_dev, &info->cpus); @@ -351,13 +364,21 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs= _info *info, int cpu) goto out_free_resources; } =20 + ret =3D clk_prepare_enable(info->cpu_clk); + if (ret) + goto out_free_opp_table; + + ret =3D clk_prepare_enable(info->inter_clk); + if (ret) + goto out_disable_mux_clock; + /* Search a safe voltage for intermediate frequency. */ rate =3D clk_get_rate(info->inter_clk); opp =3D dev_pm_opp_find_freq_ceil(cpu_dev, &rate); if (IS_ERR(opp)) { dev_err(cpu_dev, "cpu%d: failed to get intermediate opp\n", cpu); ret =3D PTR_ERR(opp); - goto out_free_opp_table; + goto out_disable_inter_clock; } info->intermediate_voltage =3D dev_pm_opp_get_voltage(opp); dev_pm_opp_put(opp); @@ -370,10 +391,21 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs= _info *info, int cpu) =20 return 0; =20 +out_disable_inter_clock: + clk_disable_unprepare(info->inter_clk); + +out_disable_mux_clock: + clk_disable_unprepare(info->cpu_clk); + out_free_opp_table: dev_pm_opp_of_cpumask_remove_table(&info->cpus); =20 out_free_resources: + if (regulator_is_enabled(info->proc_reg)) + regulator_disable(info->proc_reg); + if (info->sram_reg && regulator_is_enabled(info->sram_reg)) + regulator_disable(info->sram_reg); + if (!IS_ERR(info->proc_reg)) regulator_put(info->proc_reg); if (!IS_ERR(info->sram_reg)) @@ -388,14 +420,22 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs= _info *info, int cpu) =20 static void mtk_cpu_dvfs_info_release(struct mtk_cpu_dvfs_info *info) { - if (!IS_ERR(info->proc_reg)) + if (!IS_ERR(info->proc_reg)) { + regulator_disable(info->proc_reg); regulator_put(info->proc_reg); - if (!IS_ERR(info->sram_reg)) + } + if (!IS_ERR(info->sram_reg)) { + regulator_disable(info->sram_reg); regulator_put(info->sram_reg); - if (!IS_ERR(info->cpu_clk)) + } + if (!IS_ERR(info->cpu_clk)) { + clk_disable_unprepare(info->cpu_clk); clk_put(info->cpu_clk); - if (!IS_ERR(info->inter_clk)) + } + if (!IS_ERR(info->inter_clk)) { + clk_disable_unprepare(info->inter_clk); clk_put(info->inter_clk); + } =20 dev_pm_opp_of_cpumask_remove_table(&info->cpus); } --=20 2.18.0