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DB6PR0402MB2902.eurprd04.prod.outlook.com (2603:10a6:4:9a::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2921.27; Sat, 18 Apr 2020 13:45:28 +0000 Received: from DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::d17b:d767:19c3:b871]) by DB6PR0402MB2760.eurprd04.prod.outlook.com ([fe80::d17b:d767:19c3:b871%6]) with mapi id 15.20.2921.027; Sat, 18 Apr 2020 13:45:28 +0000 From: Peng Fan To: "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , Leonard Crestez , "sboyd@kernel.org" , Abel Vesa CC: "kernel@pengutronix.de" , "festevam@gmail.com" , dl-linux-imx , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Anson Huang , Daniel Baluta , "aford173@gmail.com" , Jacky Bai , Jun Li , "l.stach@pengutronix.de" , "andrew.smirnov@gmail.com" , "agx@sigxcpu.org" , "angus@akkea.ca" , "heiko@sntech.de" , Andy Duan , "linux-clk@vger.kernel.org" Subject: RE: [PATCH V2 00/10] clk: imx: fixes and improve for i.MX8M Thread-Topic: [PATCH V2 00/10] clk: imx: fixes and improve for i.MX8M Thread-Index: AQHV+FiylUv3TAYoQ06tNnE7fjyGF6h/HlpQ Date: Sat, 18 Apr 2020 13:45:28 +0000 Message-ID: References: <1584008384-11578-1-git-send-email-peng.fan@nxp.com> In-Reply-To: <1584008384-11578-1-git-send-email-peng.fan@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=peng.fan@nxp.com; x-originating-ip: [180.107.26.236] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 1e678752-015c-403a-15c9-08d7e39ec174 x-ms-traffictypediagnostic: DB6PR0402MB2902:|DB6PR0402MB2902: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 0377802854 x-forefront-antispam-report: 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"linux-arm-kernel@lists.infradead.org" , Jun Li Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org > Subject: [PATCH V2 00/10] clk: imx: fixes and improve for i.MX8M Ping... Thanks, Peng. > > From: Peng Fan > > Patches based on for-next > > V2: > Patch 7, drop wait after write, add one line comment for write twice > > V1: > Patch 1,2 is to fix the lockdep warning reported by Leonard Patch 3 is to fix pll > mux bit Patch 4 is align with other i.MX8M using gate Patch 5 is to simplify > i.MX8MP clk root using composite > > Patch 3~5 is actually https://patchwork.kernel.org/patch/11402761/ > with a minimal change to patch 5 here. > > Patch 6 is to use composite core clk for A53 clk root Patch 7,8,9 is actually to > fix CORE/BUS clk slice issue. > This issue is triggerred after we update U-Boot to include the A53 clk fixes > to sources from PLL, not from A53 root clk, because of the signoff timing is > 1GHz. U-Boot set the A53 root mux to 2, sys pll2 500MHz. Kernel will set > the A53 root mux to 4, sys pll1 800MHz, then gate off sys pll2 500MHz. Then > kernel will gate off A53 root because clk_ignore_unsed, A53 directly sources > PLL, so it is ok to gate off A53 root. However when gate off A53 root clk, > system hang, because the original mux sys pll2 500MHz gated off with > CLK_OPS_PARENT_ENABLE flag. > > It is lucky that we not met issue for other core/bus clk slice except A53 > ROOT core slice. But it is always triggerred after U-Boot and Linux both > switch to use ARM PLL for A53 core, but have different mux settings for A53 > root clk slice. > > So the three patches is to address this issue. > > Patch 10 is make memrepair as critical. > > Peng Fan (10): > arm64: dts: imx8m: assign clocks for A53 > clk: imx8m: drop clk_hw_set_parent for A53 > clk: imx: imx8mp: fix pll mux bit > clk: imx8mp: Define gates for pll1/2 fixed dividers > clk: imx8mp: use imx8m_clk_hw_composite_core to simplify code > clk: imx8m: migrate A53 clk root to use composite core > clk: imx: add mux ops for i.MX8M composite clk > clk: imx: add imx8m_clk_hw_composite_bus > clk: imx: use imx8m_clk_hw_composite_bus for i.MX8M bus clk slice > clk: imx8mp: mark memrepair clock as critical > > arch/arm64/boot/dts/freescale/imx8mm.dtsi | 10 +- > arch/arm64/boot/dts/freescale/imx8mn.dtsi | 10 +- > arch/arm64/boot/dts/freescale/imx8mp.dtsi | 11 ++- > arch/arm64/boot/dts/freescale/imx8mq.dtsi | 9 +- > drivers/clk/imx/clk-composite-8m.c | 67 ++++++++++++- > drivers/clk/imx/clk-imx8mm.c | 27 +++--- > drivers/clk/imx/clk-imx8mn.c | 25 +++-- > drivers/clk/imx/clk-imx8mp.c | 150 > +++++++++++++++--------------- > drivers/clk/imx/clk-imx8mq.c | 29 +++--- > drivers/clk/imx/clk.h | 7 ++ > include/dt-bindings/clock/imx8mp-clock.h | 28 +++++- > 11 files changed, 240 insertions(+), 133 deletions(-) > > -- > 2.16.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel