From patchwork Wed Mar 26 06:30:30 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Crystal Guo X-Patchwork-Id: 14029758 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 12718C36008 for ; Wed, 26 Mar 2025 06:32:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC: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=aaBZuoENevLJbWKLyrTtql09PLoMSh8b42u2wmaoENc=; b=msjMcMvgB3aqiBLgX/GbqRViLU ytmXYXl/WDVMQp/dt3VEo2zVsy/TS8ZFcmOfUU28j0luxgfqNwFUugHUzdgxihhJEINHnjiIHUth2 9Zdbl/IBAiMXdvN8oIEqQRBDB/n+Yv9asj/gzUcsS0cXQqJAbiVYBVzvyyE6qks1qS+bgxZMUWCLS +jlR/GnvoXTFPr2XXXNfRLlNWMb3lCwOhD7Djb5YMK0TIvckYJ4FeSgl/2Cch7tGUSpw1y1dXpmXU ZpSqOYpeL02ZaMQpnJ/oFfup0WEig1dDc1Ch/W1T3XaVPtkiPt7I5KOOiukVAUxadO8BI5beRvtf8 Lzh8ftOw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.1 #2 (Red Hat Linux)) id 1txKJf-00000007fUM-2i4R; Wed, 26 Mar 2025 06:32:43 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.98.1 #2 (Red Hat Linux)) id 1txKHw-00000007fH7-25Zj; Wed, 26 Mar 2025 06:30:57 +0000 X-UUID: dc68d42a0a0b11f083f2a1c9db70dae0-20250325 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=aaBZuoENevLJbWKLyrTtql09PLoMSh8b42u2wmaoENc=; b=KIbrKgF4iS2LkoziQeVaFG6aUh/D5H63p94/ruXthD3SXlO/ataD9j2zCq9iXI2e6NTZR0MpfEEVDvOq9lxM5TkOHIrw2N78Qngq87l8xDoedx/5P9CDa7ADfKkVczBJE+M06F6ilpZ/Rkbj1YBLLArukxJLs8tDl6B9KgUq+sM=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.2.1,REQID:d40f1baf-971b-4f7e-8d9d-b78ffc098aa9,IP:0,UR L:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-25 X-CID-META: VersionHash:0ef645f,CLOUDID:ec2c50a5-c619-47e3-a41b-90eedbf5b947,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0|50,EDM:-3,IP:ni l,URL:1,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES :1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_ULS X-UUID: dc68d42a0a0b11f083f2a1c9db70dae0-20250325 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 129751176; Tue, 25 Mar 2025 23:30:50 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.39; Wed, 26 Mar 2025 14:30:47 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1258.39 via Frontend Transport; Wed, 26 Mar 2025 14:30:47 +0800 From: Crystal Guo To: Krzysztof Kozlowski , Rob Herring , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Crystal Guo CC: , , , , Subject: [v3,0/2] Add an interface to get current DDR data rate Date: Wed, 26 Mar 2025 14:30:30 +0800 Message-ID: <20250326063041.7126-1-crystal.guo@mediatek.com> X-Mailer: git-send-email 2.46.0 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250325_233056_547857_F4D37A44 X-CRM114-Status: GOOD ( 11.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series is based on linux-next, tag: next-20250324. Vcore DVFS feature need know the current DDR data rate. Add MediaTek DRAMC driver to provide an interface that can obtain current DDR data rate. --- Changes in v3: - Move register offset, register mask and other SoC-dependent variables to the platform data; - Correct the spelling error. --- Changes in v2: - Remove pr_info and pr_err, use dev_err or dev_err_probe to print error message; - Replace module_init by module_platform_driver; - Remove unnecessary global variables; - Change fmeter-verison to platform data; - Remove mtk-dramc.h; - Refine compatible to "mediatek,mt8196-dramc"; - Refine CONFIG name to MEDIATEK_MC; - Fix yaml build errors, remove unnecessary properties on yaml file. Link to v2: https://patchwork.kernel.org/patch/13964208 Crystal Guo (2): dt-bindings: memory-controllers: Add MediaTek DRAM controller interface memory/mediatek: Add an interface to get current DDR data rate .../memory-controllers/mediatek,dramc.yaml | 44 ++++ drivers/memory/Kconfig | 1 + drivers/memory/Makefile | 1 + drivers/memory/mediatek/Kconfig | 21 ++ drivers/memory/mediatek/Makefile | 2 + drivers/memory/mediatek/mtk-dramc.c | 232 ++++++++++++++++++ 6 files changed, 301 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml create mode 100644 drivers/memory/mediatek/Kconfig create mode 100644 drivers/memory/mediatek/Makefile create mode 100644 drivers/memory/mediatek/mtk-dramc.c