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[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 Content-Transfer-Encoding: 8bit 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(-) -- 2.34.1 From mboxrd@z Thu Jan 1 00:00:00 1970 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 87223C76195 for ; Sun, 19 Mar 2023 13:22:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=YJ7VCOS5tJIyH19NzoiuVrHA7DhAy5n9s93I05Yrq5c=; b=zc7FDm6VFNpFRH 9lDVd3Ihc4g/48rHw6IfMb0rN+VHpaJgf29ISSPDDU5MF4bMQZ2Y/KsRspYwTzQ3ro0rE2rFDwDEB pO4h+fv1xiKyBMVYFD9r0pXpdCKPCiUe//8oSKs1a+s2dgTUKZ5ZIskNEq/SsPrDU2NLuSFKWWj3x FoUzQg8DtZZKniUnXgLWRgvM7Yltcz+gpXwpyRmb/ta1unvwcIl1wzia/OJNsEUxFVBnD9ysgrIno nkBm8+CCrrHvz8jhReS/f4w8DBG0ppgut2DquuoCI9XNDNujQ1pGBvdtNobEJPorAigZuVNwl4Kpw Gtjrrc6JYm7PaZHzYfMQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pdsye-006nKl-2f; Sun, 19 Mar 2023 13:21:36 +0000 Received: from mail-il1-x133.google.com ([2607:f8b0:4864:20::133]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pdsyc-006nK3-0v for linux-arm-kernel@lists.infradead.org; Sun, 19 Mar 2023 13:21:35 +0000 Received: by mail-il1-x133.google.com with SMTP id w4so5295276ilv.0 for ; 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=53t0gfhJxakcf6gfTxHXDrR+EIrOAaY/IGf3moQzGl1L6IZoJ0qUR76W8pHM1ZDhl+ hYWEIWAb1t6RXToEFkMMx5xG27x1f+a/EanjairRk5WZ+++I55ERxuEGA+UbgAOtW1/p 7wgaI9d7VF+opM1ty9Ho3J4KmVqJm+NGRhb8pukfBMIwhYyUZB6ng68qGWlmH8XGWyil GjBqHIjzfHK9TQB0tlOsjmTjotx75bwgVGiiNhERYIXzWx3ygRro18kgOSSjdpFnvKID 9MyHWL4oTLf5vfJ/YiKsJ6GAXbvs1k9El2EB29fBls9BMf/vlg/Nspx7Ey+I9Fc6FhWo sEMQ== X-Gm-Message-State: AO0yUKVHgUtxFDBRC8Um6enVUyZr13XFfkmC+n275PAUI4DFQVzhfH+A hmJ0SttdTwySRNzIj5QqE4s= 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230319_062134_325267_A3B39A04 X-CRM114-Status: GOOD ( 12.99 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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(-) -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel