From patchwork Thu Jan 27 23:07:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Norris X-Patchwork-Id: 12727498 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 445CDC433F5 for ; Thu, 27 Jan 2022 23:10:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: 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: List-Owner; bh=7EAnP9yACsSEVCH6ZrZTImzCRpRyOb6wZH/o47KDIDI=; b=J9o7S7i1Gulhsg ePSfgt1lYNnG2LqLnh0V7lhkQ3xPlkYZX4KnBPRS28IxtfHo9kKDIobx7Yq8uuix7gRFJmkJuJHDh yTNlvX+gl6z5kvo2Qd+o3GlvVo3xA2/wsAxPhUNa+Sg++BorABINFoeCfzPm1EnDqJQTcwfgyMxHy vUmxXUV8MtxwQKksRn9HopozflAF+G+MGRX50h/BUjSz0eGPswiLpGXFqivr1Rw0helHC2uqoWE0c tTE9uM6htAtwJBCeUjkc/h0nB5yQEZIzZ8AWaSPZAYgjwuT1xtjPHlkkiuEOn4dJ0wuaCk/IE7vRw Y7sCJpZPRLlfIbVhXnMQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDDuR-00HHIM-2K; Thu, 27 Jan 2022 23:10:31 +0000 Received: from mail-pj1-x1033.google.com ([2607:f8b0:4864:20::1033]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nDDsZ-00HGMH-Ah for linux-rockchip@lists.infradead.org; Thu, 27 Jan 2022 23:08:36 +0000 Received: by mail-pj1-x1033.google.com with SMTP id b1-20020a17090a990100b001b14bd47532so4785295pjp.0 for ; Thu, 27 Jan 2022 15:08:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PIXY+sEGqfziH4n+3nglkYpU71hUD2jbkDapelJUYx4=; b=VHdpreI16umQb0mYgJNYwcpXLMOYb9t5rWTJ5lF4m9dkAlOLQJbt8IUssF2/vzGhhu P2J4/IhQS1aBIC7OrTZ1rtXRz+BfKAgWlbPsQXOeqn/lbT032Hn/Q9FuFAS2EqI91NEL qkeLOxEtvhwyVPeocb+jYET3MYH1WQ8LLra/E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PIXY+sEGqfziH4n+3nglkYpU71hUD2jbkDapelJUYx4=; b=fZMdHn89Ph54gSzhsevtbZvDZnJM0F5xoRa/kj2pFPDpcrhhpFzSxDogzG6uURdVJ4 K0S2KgbOMeA5Ka75CO1/YOpRDiSK3lmL5LuhrgYjYmF+k4cUuiq6AROIXjGDWtaJX0a0 nVPHVXCn/FEqCpunag6o5P+2mPBNk3NMrvsPVj264QiTcjKnnDBUPi46NizemVWCbYGR cL6BLjfqBgn9uEkBSQI5Vt2djS03tplXd26KhgvaOqcpcOJzC2b3s6lajLDFzXdgypUu Iy0gVWGusBuy4051VUIgVMeEesTKDulIqhUqLBwIq6ZBmvXTTpNIiU5UAZmRGQwbFsny j6vQ== X-Gm-Message-State: AOAM533ph38uO0aNIhhRqXdgXeOunjKG3FZSmxKKh8Phwtv1hUBu4YHM /UDmHsWuhTcoroR2dGf5aESLxw== X-Google-Smtp-Source: ABdhPJyOEdExuVH8zC2uGNPOjViFehIsUDjflPA1+PxmuS5k/khzsp0p8n9ZntEMyywxRWObRePXqQ== X-Received: by 2002:a17:90b:1983:: with SMTP id mv3mr6659930pjb.222.1643324914114; Thu, 27 Jan 2022 15:08:34 -0800 (PST) Received: from localhost ([2620:15c:202:201:723d:38a9:9e7f:3435]) by smtp.gmail.com with UTF8SMTPSA id h10sm4000716pfv.31.2022.01.27.15.08.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Jan 2022 15:08:33 -0800 (PST) From: Brian Norris To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Rob Herring Cc: linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Lin Huang , linux-arm-kernel@lists.infradead.org, Derek Basehore , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Heiko Stuebner , Brian Norris Subject: [PATCH v2 05/15] dt-bindings: devfreq: rk3399_dmc: Add more disable-freq properties Date: Thu, 27 Jan 2022 15:07:16 -0800 Message-Id: <20220127150615.v2.5.I382d4de737198ea52deb118c9bdc4d93d76e009e@changeid> X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog In-Reply-To: <20220127230727.3369358-1-briannorris@chromium.org> References: <20220127230727.3369358-1-briannorris@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220127_150835_416968_0C0DC7BE X-CRM114-Status: GOOD ( 12.92 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org DDR DVFS tuning has found that several power-saving features don't have good tradeoffs at higher frequencies -- at higher frequencies, we'll see glitches or other errors. Provide tuning controls so these can be disabled at higher OPPs, and left active only at the lower ones. Signed-off-by: Brian Norris Reviewed-by: Rob Herring --- Changes in v2: - hyphens, not underscores - *-hz units, and drop the types definition .../bindings/devfreq/rk3399_dmc.yaml | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml index 8786b7fa9b28..afa058c52c0b 100644 --- a/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml +++ b/Documentation/devicetree/bindings/devfreq/rk3399_dmc.yaml @@ -299,6 +299,38 @@ properties: self-refresh mode. The controller, pi, PHY and DRAM clock will be gated if bus is idle for standby_idle nanoseconds. + rockchip,pd-idle-dis-freq-hz: + description: + Defines the power-down idle disable frequency in Hz. When the DDR + frequency is greater than pd-idle-dis-freq, power-down idle is disabled. + See also rockchip,pd-idle-ns. + + rockchip,sr-idle-dis-freq-hz: + description: + Defines the self-refresh idle disable frequency in Hz. When the DDR + frequency is greater than sr-idle-dis-freq, self-refresh idle is + disabled. See also rockchip,sr-idle-ns. + + rockchip,sr-mc-gate-idle-dis-freq-hz: + description: + Defines the self-refresh and memory-controller clock gating disable + frequency in Hz. When the DDR frequency is greater than + sr-mc-gate-idle-dis-freq, the clock will not be gated when idle. See also + rockchip,sr-mc-gate-idle-ns. + + rockchip,srpd-lite-idle-dis-freq-hz: + description: + Defines the self-refresh power down idle disable frequency in Hz. When + the DDR frequency is greater than srpd-lite-idle-dis-freq, memory will + not be placed into self-refresh power down mode when idle. See also + rockchip,srpd-lite-idle-ns. + + rockchip,standby-idle-dis-freq-hz: + description: + Defines the standby idle disable frequency in Hz. When the DDR frequency + is greater than standby-idle-dis-freq, standby idle is disabled. See also + rockchip,standby-idle-ns. + required: - compatible - devfreq-events @@ -330,4 +362,9 @@ examples: rockchip,ddr3_odt_dis_freq = <333000000>; rockchip,lpddr3_odt_dis_freq = <333000000>; rockchip,lpddr4_odt_dis_freq = <333000000>; + rockchip,pd-idle-dis-freq-hz = <1000000000>; + rockchip,sr-idle-dis-freq-hz = <1000000000>; + rockchip,sr-mc-gate-idle-dis-freq-hz = <1000000000>; + rockchip,srpd-lite-idle-dis-freq-hz = <0>; + rockchip,standby-idle-dis-freq-hz = <928000000>; };