From patchwork Fri Dec 27 16:56:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dario Binacchi X-Patchwork-Id: 13922059 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 CE823E7718B for ; Fri, 27 Dec 2024 17:25:48 +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-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=t9y65mSKckiOGkTEuAAogO736LDDvGviKkEok9cQB10=; b=MHiChZ0SxniNIyO5SpNCCik4dg 2WyKnWA2/EwX8KEC9/rCePkxPhE+U3jdgLsS8FU8sbFNHD8JXFbC1yY3PZ2lCv1wwDU+6scaUnFfN 238b/vihrjvajEG2gjO2oTXRBKmr4n5Cl+bwQ9N6gjs8tG6aMOnmICEroTPyzjE3gGqTw/xik8uUn pEIn/HV1iR8+zpznMKtlnTpKIIYP5aj0Z2Tci9bEII/LtiRgAa1vAOtcF42UI3vhyKDURZ6YSBH1z zONO70tm+0M4JuqOPnmAVO/Ozz/p9BEBerw2ftKm9IEE8wzu8gEv39Uxbri59mEsmrmmAeEUY+CFu e/dgIgmA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tRE5j-00000000iRe-0MP7; Fri, 27 Dec 2024 17:25:39 +0000 Received: from mail-ej1-x62d.google.com ([2a00:1450:4864:20::62d]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tRDf1-00000000eew-1Hkk for linux-arm-kernel@lists.infradead.org; Fri, 27 Dec 2024 16:58:04 +0000 Received: by mail-ej1-x62d.google.com with SMTP id a640c23a62f3a-aa684b6d9c7so1281110166b.2 for ; Fri, 27 Dec 2024 08:58:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1735318682; x=1735923482; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=t9y65mSKckiOGkTEuAAogO736LDDvGviKkEok9cQB10=; b=afI1izjSPgKPiMj8fkCOeqitwzJrFuca+1b8nAdLlzOlG3AWmfXiaPBnhjoNNTVDwp Kd+Tbvi8XeZcsEljPP7fydNq7tQecbFQp/7kCJyU09jQOIMgsO4Rta/BPI6OX/ScmGhx UcFVSm0q7YQ22PWOtj6Gqn8fWzYPWV6V9JYw4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735318682; x=1735923482; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=t9y65mSKckiOGkTEuAAogO736LDDvGviKkEok9cQB10=; b=ZjBUafvCY9CCFBLxueScSPw0RUcl60zc91dx1BnuO1o7HJjE7T8dkesF+LNPglEee/ O3P/gjadqTMuP1XQn6jN7YIwpgCDMq/O2FSFlDLqjHuDF994M/zNCJdYLtfnolo+BC3p a7vEdxhMHY0Xdq66OC0/glZ0GYIKyEgUpSi+REw4upyIPrl1RxRYGodG7bc3v53jkVN3 YHBO5kpMYZM3sJZOblDoeOUNa1c+f9X9OwSv4bFPBjHR03wVDaNZRGOl83ppUDsCFtcB 4t85irmIpC3jzYGJeSbwksXZOH4V4MH7YncH2I4RZ+r1WoBClLYys3UV09yXaldJtJqv GqTQ== X-Forwarded-Encrypted: i=1; AJvYcCWqA4NIHgefEezOaTRMcd2Z79DRBe5dj3y73ybwNpdmwL5hnKHzsUMJuXTJOu/EwOpcUntYC3jGfJw3jtrEWmES@lists.infradead.org X-Gm-Message-State: AOJu0YyUCFAgm31EcJgowRtiW7zzAQsU86hkf7VDbJa4t8jsn9Q4q6fP dEtJ0NHiliLsEctVOL1imf8PkJ1HyRAFqOUM4S2WcqDUCd/DoOjQnbznWKeREvA= X-Gm-Gg: ASbGnctn+SK3zjvgIKGdIUIsBrrVvMHuMdZUAXURu2i8GmTIFsayySUDItz2Y/0/ajo yK8fuQVYbSs27zNBJKtJz2JCJ/zT5ilM/kq6gDUcH3s9ASWUD5xwsgYE+taXv/VKBzAlss42oyK jWJMd0WVxr2n0W7zUP/dwQeZ90kF1tcs86PDimREbherP/daVaKU9+GZ79MKgCtYkIxn8ZYwXgO 0qw7NDTAQSkGSQ7yDse+2vbfNvkeBkyLlhtnqN6c5GaNcs1jXyT2j+RhoXRVChARm1ffpWAkatE k3M50OF1ZxkoE3bnVxMpFw== X-Google-Smtp-Source: AGHT+IF5jJPOX6kcBf6BRntab9qdhEP5H59U2Fi48sPndxAdgm1w2Y9ddhMbzuVLYYL1IC/eBjryeA== X-Received: by 2002:a17:907:2d2c:b0:aa6:8a1b:8b78 with SMTP id a640c23a62f3a-aac271318f9mr2143573966b.6.1735318680458; Fri, 27 Dec 2024 08:58:00 -0800 (PST) Received: from dario-ThinkPad-T14s-Gen-2i.. ([2.196.43.175]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aac0f0159f1sm1130097266b.154.2024.12.27.08.57.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Dec 2024 08:58:00 -0800 (PST) From: Dario Binacchi To: linux-kernel@vger.kernel.org Cc: linux-amarula@amarulasolutions.com, Dario Binacchi , Abel Vesa , Fabio Estevam , Michael Turquette , Peng Fan , Pengutronix Kernel Team , Sascha Hauer , Shawn Guo , Stephen Boyd , imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Subject: [PATCH v7 23/23] clk: imx8mn: support spread spectrum clock generation Date: Fri, 27 Dec 2024 17:56:26 +0100 Message-ID: <20241227165719.3902388-24-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241227165719.3902388-1-dario.binacchi@amarulasolutions.com> References: <20241227165719.3902388-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241227_085803_348118_D3AC1064 X-CRM114-Status: GOOD ( 15.90 ) 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 Add support for spread spectrum clock generation for the audio, video, and DRAM PLLs. Signed-off-by: Dario Binacchi --- Changes in v7: - Add and manage fsl,anatop property as phandle to the anatop node with the new patches: - 10/23 dt-bindings: clock: imx8m-clock: add phandle to the anatop - 11/23 arm64: dts: imx8mm: add phandle to anatop within CCM - 12/23 arm64: dts: imx8mn: add phandle to anatop within CCM - 13/23 arm64: dts: imx8mp: add phandle to anatop within CCM - 14/23 arm64: dts: imx8mq: add phandle to anatop within CCM Changes in v6: - Merge patches: 10/20 dt-bindings: clock: imx8mm: add binding definitions for anatop 11/20 dt-bindings: clock: imx8mn: add binding definitions for anatop 12/20 dt-bindings: clock: imx8mp: add binding definitions for anatop to 05/20 dt-bindings: clock: imx8m-anatop: define clocks/clock-names now renamed 05/18 dt-bindings: clock: imx8m-anatop: add oscillators and PLLs - Split the patch 15/20 dt-bindings-clock-imx8m-clock-support-spread-spectru.patch into 12/18 dt-bindings: clock: imx8m-clock: add PLLs 16/18 dt-bindings: clock: imx8m-clock: support spread spectrum clocking Changes in v5: - Fix compilation errors. - Separate driver code from dt-bindings Changes in v4: - Add dt-bindings for anatop - Add anatop driver - Drop fsl,ssc-clocks from spread spectrum dt-bindings Changes in v3: - Patches 1/8 has been added in version 3. The dt-bindings have been moved from fsl,imx8m-anatop.yaml to imx8m-clock.yaml. The anatop device (fsl,imx8m-anatop.yaml) is indeed more or less a syscon, so it represents a memory area accessible by ccm (imx8m-clock.yaml) to setup the PLLs. - Patches {3,5}/8 have been added in version 3. - Patches {4,6,8}/8 use ccm device node instead of the anatop one. Changes in v2: - Add "allOf:" and place it after "required:" block, like in the example schema. - Move the properties definition to the top-level. - Drop unit types as requested by the "make dt_binding_check" command. drivers/clk/imx/clk-imx8mn.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c index 984331372139..9a04e8138b7d 100644 --- a/drivers/clk/imx/clk-imx8mn.c +++ b/drivers/clk/imx/clk-imx8mn.c @@ -306,6 +306,7 @@ static int imx8mn_clocks_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *np = dev->of_node, *anp; void __iomem *base; + struct imx_pll14xx_ssc ssc_conf; int ret; base = devm_platform_ioremap_resource(pdev, 0); @@ -347,9 +348,21 @@ static int imx8mn_clocks_probe(struct platform_device *pdev) hws[IMX8MN_SYS_PLL3_REF_SEL] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_SYS_PLL3_REF_SEL); hws[IMX8MN_AUDIO_PLL1] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_AUDIO_PLL1); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "audio_pll1", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MN_AUDIO_PLL1], &ssc_conf); + hws[IMX8MN_AUDIO_PLL2] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_AUDIO_PLL2); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "audio_pll2", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MN_AUDIO_PLL2], &ssc_conf); + hws[IMX8MN_VIDEO_PLL] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_VIDEO_PLL); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "video_pll", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MN_VIDEO_PLL], &ssc_conf); + hws[IMX8MN_DRAM_PLL] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_DRAM_PLL); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "dram_pll", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MN_DRAM_PLL], &ssc_conf); + hws[IMX8MN_GPU_PLL] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_GPU_PLL); hws[IMX8MN_M7_ALT_PLL] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_M7_ALT_PLL); hws[IMX8MN_ARM_PLL] = imx_anatop_get_clk_hw(anp, IMX8MN_ANATOP_ARM_PLL);