From patchwork Fri Apr 15 05:59:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?UmV4LUJDIENoZW4gKOmZs+afj+i+sCk=?= X-Patchwork-Id: 562123 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 D22CDC433FE for ; Fri, 15 Apr 2022 05:59:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350360AbiDOGCI (ORCPT ); Fri, 15 Apr 2022 02:02:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48932 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350223AbiDOGB7 (ORCPT ); Fri, 15 Apr 2022 02:01:59 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 866B6BF56; Thu, 14 Apr 2022 22:59:31 -0700 (PDT) X-UUID: 2b9ab1ce06b64891baf30216681ea903-20220415 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:63cde102-6cd4-4f37-941b-e512ec496ae1, OB:0, LO B:20,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:100,FILE:0,RULE:Release_Ham,A CTION:release,TS:100 X-CID-INFO: VERSION:1.1.4, REQID:63cde102-6cd4-4f37-941b-e512ec496ae1, OB:0, LOB: 20,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:100,FILE:0,RULE:Spam_GS981B3D,A CTION:quarantine,TS:100 X-CID-META: VersionHash:faefae9, CLOUDID:9a133aa9-d103-4e36-82b9-b0e86991b3df, C OID:FAIL,Recheck:0,SF:13|15|28|17|19|48,TC:nil,Content:0,EDM:-3,File:nil,Q S:0,BEC:nil X-UUID: 2b9ab1ce06b64891baf30216681ea903-20220415 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 16324141; Fri, 15 Apr 2022 13:59:20 +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, 15 Apr 2022 13:59:20 +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, 15 Apr 2022 13:59:19 +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, 15 Apr 2022 13:59:19 +0800 From: Rex-BC Chen To: , , , , CC: , , , , , , , , , , , Rex-BC Chen Subject: [PATCH V3 08/15] cpufreq: mediatek: Make sram regulator optional Date: Fri, 15 Apr 2022 13:59:09 +0800 Message-ID: <20220415055916.28350-9-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220415055916.28350-1-rex-bc.chen@mediatek.com> References: <20220415055916.28350-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Jia-Wei Chang For some MediaTek SoCs, like MT8186, it's possible that the sram regulator is shared between CPU and CCI. We hope regulator framework can return NULL for error handling rather than a dummy handler from regulator_get api. Therefore, we choose to use regulator_get_optional. Signed-off-by: Jia-Wei Chang Signed-off-by: Rex-BC Chen Reviewed-by: AngeloGioacchino Del Regno --- drivers/cpufreq/mediatek-cpufreq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 4d46e823c24e..559f4a383d30 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -436,7 +436,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu) } /* Both presence and absence of sram regulator are valid cases. */ - info->sram_reg = regulator_get_exclusive(cpu_dev, "sram"); + info->sram_reg = regulator_get_optional(cpu_dev, "sram"); if (IS_ERR(info->sram_reg)) info->sram_reg = NULL; else {