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[79.30.28.209]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ab384fcd73dsm332562366b.178.2025.01.18.04.41.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 18 Jan 2025 04:41:29 -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 v9 23/23] clk: imx8mm: support spread spectrum clock generation Date: Sat, 18 Jan 2025 13:40:06 +0100 Message-ID: <20250118124044.157308-24-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250118124044.157308-1-dario.binacchi@amarulasolutions.com> References: <20250118124044.157308-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250118_044131_389442_F2B701B2 X-CRM114-Status: GOOD ( 17.38 ) 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 v9: - Add 'Reviewed-by' tag of Peng Fan for imx8mn platform patches - Fix building warning raised by the kernel test robot for patch v8, 11/18 clk: imx: add support for i.MX8MN anatop clock driver - Add patches for imx8m{m,p} platforms: - 23/23 clk: imx8mm: support spread spectrum clock generation - 22/23 clk: imx: add support for i.MX8MM anatop clock driver - 21/23 clk: imx8mp: support spread spectrum clock generation - 20/23 clk: imx8mp: rename ccm_base to base - 19/23 clk: imx: add support for i.MX8MP anatop clock driver Changes in v8: - Drop the patches added in version 7: - 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 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-imx8mm.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c index d39de0a81a6f..f8413f495d5d 100644 --- a/drivers/clk/imx/clk-imx8mm.c +++ b/drivers/clk/imx/clk-imx8mm.c @@ -286,6 +286,7 @@ static int imx8mm_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); @@ -324,9 +325,21 @@ static int imx8mm_clocks_probe(struct platform_device *pdev) hws[IMX8MM_SYS_PLL3_REF_SEL] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_SYS_PLL3_REF_SEL); hws[IMX8MM_AUDIO_PLL1] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_AUDIO_PLL1); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "audio_pll1", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MM_AUDIO_PLL1], &ssc_conf); + hws[IMX8MM_AUDIO_PLL2] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_AUDIO_PLL2); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "audio_pll2", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MM_AUDIO_PLL2], &ssc_conf); + hws[IMX8MM_VIDEO_PLL] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_VIDEO_PLL); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "video_pll", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MM_VIDEO_PLL], &ssc_conf); + hws[IMX8MM_DRAM_PLL] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_DRAM_PLL); + if (!imx_clk_pll14xx_ssc_parse_dt(np, "dram_pll", &ssc_conf)) + imx_clk_pll14xx_enable_ssc(hws[IMX8MM_DRAM_PLL], &ssc_conf); + hws[IMX8MM_GPU_PLL] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_GPU_PLL); hws[IMX8MM_VPU_PLL] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_VPU_PLL); hws[IMX8MM_ARM_PLL] = imx_anatop_get_clk_hw(anp, IMX8MM_ANATOP_ARM_PLL);