From patchwork Mon Jan 6 14:21:43 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ahmad Fatoum X-Patchwork-Id: 13927589 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 8C84FE77188 for ; Mon, 6 Jan 2025 15:37:02 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=aVACOVNF3iosJwGrzNQ3kbSFQ7Wdthdx1wHxrTp5rl0=; b=l74GVbvFIMlGOWBQB/aZoWBRMN MzSPImEJGQXi8DqYrZaclAOhmzqkdWFPqX4cdQnby17zetWU1uvCV4nk6IxmcslG/f1h3MAIOMB5A Gx5SMfsDn9oAoBkpV5yQka65qTt+VV/oDJ8Nu91//YL4acux/cqCJcHXnzIvAGhY/PxIATQxImHBN eCWfUYFTH0A39Ib+pUHl8lwqc2R7dPY7/LShfXKxrV7fX9/lDb8XCvuY8q+mn0xuRRtryP8i4wMHh 5ILSFSAt14S/Nv5YW43EdrGmet8+y1fypxH3kcMHS+WF/y6ayYuREc6Pth60adAesjq7JeSoHzj9E g3VHps/Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tUp9t-00000001nD3-3lyF; Mon, 06 Jan 2025 15:36:49 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tUnzZ-00000001Y3Q-14dU for linux-arm-kernel@lists.infradead.org; Mon, 06 Jan 2025 14:22:06 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1tUnzF-0003vR-CM; Mon, 06 Jan 2025 15:21:45 +0100 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1tUnzE-007BR1-0N; Mon, 06 Jan 2025 15:21:44 +0100 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1tUnzE-008rLw-2X; Mon, 06 Jan 2025 15:21:44 +0100 From: Ahmad Fatoum Date: Mon, 06 Jan 2025 15:21:43 +0100 Subject: [PATCH v2 2/6] arm64: dts: imx8mp: Add optional nominal drive mode DTSI MIME-Version: 1.0 Message-Id: <20250106-imx8m-clk-v2-2-6aaeadac65fe@pengutronix.de> References: <20250106-imx8m-clk-v2-0-6aaeadac65fe@pengutronix.de> In-Reply-To: <20250106-imx8m-clk-v2-0-6aaeadac65fe@pengutronix.de> To: Abel Vesa , Peng Fan , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Abel Vesa , Marek Vasut Cc: linux-clk@vger.kernel.org, imx@lists.linux.dev, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Ahmad Fatoum X-Mailer: b4 0.14.2 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: a.fatoum@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250106_062205_303104_9EE0D75D X-CRM114-Status: GOOD ( 14.12 ) 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 Unlike the i.MX8MM and i.MX8MN SoCs added earlier, the device tree for the i.MX8MP configures some clocks at frequencies that are only validated for overdrive mode, i.e. when VDD_SOC is 950 mV. Boards may want to run their SoC at the lower voltage of 850 mV though to reduce heat generation and power usage. For this to work, clock rates need to adhere to the limits of the nominal drive mode. Add an optional DTSI file which can be included by various boards to run in this mode. Reviewed-by: Peng Fan Signed-off-by: Ahmad Fatoum --- arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi | 63 +++++++++++++++++++++++ 1 file changed, 63 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi new file mode 100644 index 0000000000000000000000000000000000000000..f9a82a663033a1dfb72163eebb62e4aee66cee2f --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mp-nominal.dtsi @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (C) 2024 Pengutronix, Ahmad Fatoum + */ + +&clk { + assigned-clocks = <&clk IMX8MP_CLK_A53_SRC>, + <&clk IMX8MP_CLK_A53_CORE>, + <&clk IMX8MP_SYS_PLL3>, + <&clk IMX8MP_CLK_NOC>, + <&clk IMX8MP_CLK_NOC_IO>, + <&clk IMX8MP_CLK_GIC>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_800M>, + <&clk IMX8MP_ARM_PLL_OUT>, + <0>, + <&clk IMX8MP_SYS_PLL1_800M>, + <&clk IMX8MP_SYS_PLL3_OUT>, + <&clk IMX8MP_SYS_PLL1_800M>; + assigned-clock-rates = <0>, <0>, + <600000000>, + <800000000>, + <600000000>, + <400000000>; +}; + +&pgc_hdmimix { + assigned-clocks = <&clk IMX8MP_CLK_HDMI_AXI>, + <&clk IMX8MP_CLK_HDMI_APB>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_800M>, + <&clk IMX8MP_SYS_PLL1_133M>; + assigned-clock-rates = <400000000>, <133000000>; +}; + +&pgc_hsiomix { + assigned-clocks = <&clk IMX8MP_CLK_HSIO_AXI>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_800M>; + assigned-clock-rates = <400000000>; +}; + +&pgc_gpumix { + assigned-clocks = <&clk IMX8MP_CLK_GPU_AXI>, + <&clk IMX8MP_CLK_GPU_AHB>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL3_OUT>, + <&clk IMX8MP_SYS_PLL3_OUT>; + assigned-clock-rates = <600000000>, <300000000>; +}; + +&media_blk_ctrl { + assigned-clocks = <&clk IMX8MP_CLK_MEDIA_AXI>, + <&clk IMX8MP_CLK_MEDIA_APB>, + <&clk IMX8MP_CLK_MEDIA_DISP1_PIX>, + <&clk IMX8MP_CLK_MEDIA_DISP2_PIX>, + <&clk IMX8MP_CLK_MEDIA_ISP>, + <&clk IMX8MP_VIDEO_PLL1>; + assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_800M>, + <&clk IMX8MP_SYS_PLL1_800M>, + <&clk IMX8MP_VIDEO_PLL1_OUT>, + <&clk IMX8MP_VIDEO_PLL1_OUT>, + <&clk IMX8MP_SYS_PLL1_800M>; + assigned-clock-rates = <400000000>, <200000000>, + <0>, <0>, <400000000>, + <1039500000>; +};