From patchwork Sun Mar 19 13:21:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adam Ford X-Patchwork-Id: 13180377 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4F0F8C6FD1F for ; Sun, 19 Mar 2023 13:21:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230160AbjCSNVe (ORCPT ); Sun, 19 Mar 2023 09:21:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50672 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229622AbjCSNVd (ORCPT ); Sun, 19 Mar 2023 09:21:33 -0400 Received: from mail-il1-x130.google.com (mail-il1-x130.google.com [IPv6:2607:f8b0:4864:20::130]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C0F6222C0; Sun, 19 Mar 2023 06:21:32 -0700 (PDT) Received: by mail-il1-x130.google.com with SMTP id i19so5253240ila.10; Sun, 19 Mar 2023 06:21:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1679232091; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=7oO5yasZy50THtoP01vEEeRvICSlmDhbdsPlQ6bpxyE=; b=Iweei3omL5R7EO2WveyUunV176KNcPBcN4f5G7mLnOivTmTfZYR40NJT/YwshPuZQf sdxs5Y/BmdBvLrmXLDkuM/nFyuGu6N1w3Lnq0DLK4rEsxLMb5FM1Dp5P45ezUKh2EVID dV9irgI0kv8mSfgnZExplIxCOeKJzCts7fjxO6V2QvLo1VQq+etbmrCiNXDL8mhsu4Bc tE5/IlsQV7fzumr0xpiAmGwI62cspv5x0Y+rXsav46pGt5eIsgVhpHDr8UT3YCwUBGsL sH5GZAdGAMz9qugkQiJpJEY9BpXiWFeMA66D5rE/U2/ZOTfF7wDetRXB07yl2zt6UzH6 K2Uw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679232091; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=7oO5yasZy50THtoP01vEEeRvICSlmDhbdsPlQ6bpxyE=; b=mFYBkTUYhFKZA1UsTW9nmxV3rlAJL7wHjFTnuomYl+WKkWLMs71BApZLob/QQ+m5fR KtUPWs2Fb0Qp1Ly9+ySaSXemVFsAMc8fJR2Bf3JodSxZT00jUz/WEnzSTq3ROluF79U4 O5854hDiA3M6EyvESlxTMj2+IpO+rpqL8u2VidK5fEmulcT5jfyqR5UxjJLo7e5oQxg4 ZuFXn0eCMx0pqg0CG5M/NbklWDM8mrkmBcQ2oWt/uqbNCShPMUQ2dpoDcxiBpp8saRTA Xygu74oZ/m9p5yCtT5C+ex4MjRCAyvbLHT5j/Eyy36qEFyisWEo6nWZmO97+2+XmCUjn TSEQ== X-Gm-Message-State: AO0yUKVcpKzIEjV1TlsdhR+KWTQlTgPB5u3uaOaCqWMQlg8UvcN5S+Q1 aRXiEFjbJCWMWlWDYMOdsoFopHf6vKs= X-Google-Smtp-Source: AK7set8U8ZG7OjYyO8SnNNdm7hhY4pH9hcMwhAq5e/HCHWZh1Nx6SU6iz/HPFAHUPBdJPo5X+BorJQ== X-Received: by 2002:a92:c9c1:0:b0:322:f0bd:9c71 with SMTP id k1-20020a92c9c1000000b00322f0bd9c71mr3723114ilq.9.1679232091443; Sun, 19 Mar 2023 06:21:31 -0700 (PDT) Received: from aford-IdeaCentre-A730.lan (c-75-72-166-104.hsd1.mn.comcast.net. [75.72.166.104]) by smtp.gmail.com with ESMTPSA id a23-20020a027357000000b00406227162fesm2363460jae.32.2023.03.19.06.21.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Mar 2023 06:21:30 -0700 (PDT) From: Adam Ford To: linux-clk@vger.kernel.org Cc: aford@beaconembedded.com, Adam Ford , Abel Vesa , Peng Fan , Michael Turquette , Stephen Boyd , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/3] clk: imx: Improve imx8mm/imx8mn LCDIF clocks Date: Sun, 19 Mar 2023 08:21:17 -0500 Message-Id: <20230319132120.6347-1-aford173@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Both the i.MX8M Mini and Nano have a video_pll which can be used to source a clock which feeds the lcdif interface. This interface currently fixes video_pll and divides down the clock feeding LCDIF. However, when connected to an HDMI bridge chip that supports a variety of video resolutions and refresh rates, the only settings that properly sync are ones that evenly divide from the video_pll_out clock. This series adds the ability for the clk-compolsite-8m to request a better parent clock if the proper clock flag is enabled, then sets that flag in the corresponding imx8mm and imx8mn clocks. This also has a side benefit of allowing the video-pll to run at a lower clock speed which can potentially save some power depending on the requested resolution and refresh rate. Adam Ford (3): clk: imx: composite-8m: Add support to determine_rate clk: imx8mm: Let IMX8MM_CLK_LCDIF_PIXEL set parent rate clk: imx: Let IMX8MN_CLK_DISP_PIXEL set parent rate drivers/clk/imx/clk-composite-8m.c | 7 +++++++ drivers/clk/imx/clk-imx8mm.c | 2 +- drivers/clk/imx/clk-imx8mn.c | 2 +- drivers/clk/imx/clk.h | 4 ++++ 4 files changed, 13 insertions(+), 2 deletions(-)