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[209.85.220.41]) by mx.google.com with SMTPS id a640c23a62f3a-aac0e841771sor243494566b.7.2024.12.22.09.06.12 for (Google Transport Security); Sun, 22 Dec 2024 09:06:12 -0800 (PST) Received-SPF: pass (google.com: domain of dario.binacchi@amarulasolutions.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Gm-Gg: ASbGncsPUvQGXOr263LzvABRiZKbb0XaOmwaGX7PXD0B3/q/oKCtjkwqvG93Cm6wy2y Dcj0mF6LQwkVdSvGAXtAUE6pgx8Q+ejPur/Z9E98PMqSGXYgmOvEDx3I6Y8PGiHw6jsgVtw2IF0 pv9FDJoM1kGLfBZW3LS/03lYGjb4ItwWVtYKgpnK8ALXYG3as5wJQEmojVVyZCtGr6mHNf3w7f9 pnmD26wuuJiClhfWri3tNdiBvJXhbafmDYNYeeN5zc2pk2C8jFUIFbqaOS0H9XM4dLfkoHcAzNm fyCDyMrbef22JOJRGk5efHYO0atn+k/Lklfi2+owBzCtOQ== X-Received: by 2002:a17:907:9621:b0:aab:f8e8:53b9 with SMTP id a640c23a62f3a-aac345f427dmr975282166b.58.1734887171608; Sun, 22 Dec 2024 09:06:11 -0800 (PST) Received: from dario-ThinkPad-T14s-Gen-2i.amarulasolutions.com ([2.196.41.87]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-aac0efe48d6sm414056566b.127.2024.12.22.09.06.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Dec 2024 09:06:11 -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 v6 18/18] clk: imx8mn: support spread spectrum clock generation Date: Sun, 22 Dec 2024 18:04:33 +0100 Message-ID: <20241222170534.3621453-19-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241222170534.3621453-1-dario.binacchi@amarulasolutions.com> References: <20241222170534.3621453-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 X-Original-Sender: dario.binacchi@amarulasolutions.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@amarulasolutions.com header.s=google header.b=X3lFSaHK; spf=pass (google.com: domain of dario.binacchi@amarulasolutions.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=dario.binacchi@amarulasolutions.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=amarulasolutions.com; dara=pass header.i=@amarulasolutions.com Content-Type: text/plain; charset="UTF-8" Precedence: list Mailing-list: list linux-amarula@amarulasolutions.com; contact linux-amarula+owners@amarulasolutions.com List-ID: X-Spam-Checked-In-Group: linux-amarula@amarulasolutions.com X-Google-Group-Id: 476853432473 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Add support for spread spectrum clock generation for the audio, video, and DRAM PLLs. Signed-off-by: Dario Binacchi --- 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 588cebce6c9d..c61368e724f7 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; void __iomem *base; + struct imx_pll14xx_ssc ssc_conf; int ret; base = devm_platform_ioremap_resource(pdev, 0); @@ -338,9 +339,21 @@ static int imx8mn_clocks_probe(struct platform_device *pdev) hws[IMX8MN_SYS_PLL3_REF_SEL] = imx8m_anatop_get_clk_hw(IMX8MN_ANATOP_SYS_PLL3_REF_SEL); hws[IMX8MN_AUDIO_PLL1] = imx8m_anatop_get_clk_hw(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] = imx8m_anatop_get_clk_hw(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] = imx8m_anatop_get_clk_hw(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] = imx8m_anatop_get_clk_hw(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] = imx8m_anatop_get_clk_hw(IMX8MN_ANATOP_GPU_PLL); hws[IMX8MN_M7_ALT_PLL] = imx8m_anatop_get_clk_hw(IMX8MN_ANATOP_M7_ALT_PLL); hws[IMX8MN_ARM_PLL] = imx8m_anatop_get_clk_hw(IMX8MN_ANATOP_ARM_PLL);