Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751584AbdFIK60 (ORCPT ); Fri, 9 Jun 2017 06:58:26 -0400 Received: from mail-bn3nam01on0085.outbound.protection.outlook.com ([104.47.33.85]:36496 "EHLO NAM01-BN3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751528AbdFIK6X (ORCPT ); Fri, 9 Jun 2017 06:58:23 -0400 Authentication-Results: spf=fail (sender IP is 192.88.158.2) smtp.mailfrom=nxp.com; lists.infradead.org; dkim=none (message not signed) header.d=none;lists.infradead.org; dmarc=fail action=none header.from=nxp.com; Message-ID: <1497005895.28352.88.camel@nxp.com> Subject: Re: [PATCH 2/2] ARM: dts: imx6ul: Add imx6ul-tempmon From: Leonard Crestez To: Fabio Estevam CC: Shawn Guo , Bai Ping , "linux-pm@vger.kernel.org" , linux-kernel , Eduardo Valentin , Sascha Hauer , Fabio Estevam , Zhang Rui , "linux-arm-kernel@lists.infradead.org" Date: Fri, 9 Jun 2017 13:58:15 +0300 In-Reply-To: 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1;CY1PR0301MB0906;7:aoGlMKLVurEsb+dslDKXgnIgMyO8zBijJsG2bSJfXnXCyxdlAamK81Qd6kFODdQmC64eTAS2VAs2Fn0rzOYzxey7YYSL+SiWCtOlPWVTA1bOiUH/ktMvzbqwC08ie2sFtjLe0NlHymaXp20ROT8Qh2sgYGtJ0kL7tihpkbctGPXkHP3lKnxU8D7QG4RQTmKgxZbQ1x5UlVsAYfC6dDVg4gAWPOMIAeYIi+aQxMkfDQ5G7EPTrsKfZh19To7oHbpWGNuauGN1Po9QR07vaQy7vekoO++miK8WgcuiJiXHnc+yzUfdKiW4jHiLP/lkRpWZUdL4z88XnWTODow/ZiTCwQ== X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2017 10:58:19.8127 (UTC) X-MS-Exchange-CrossTenant-Id: 5afe0b00-7697-4969-b663-5eab37d5f47e X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5afe0b00-7697-4969-b663-5eab37d5f47e;Ip=[192.88.158.2];Helo=[az84smr01.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR0301MB0906 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1367 Lines: 26 On Thu, 2017-06-08 at 13:45 -0300, Fabio Estevam wrote: > On Thu, Jun 8, 2017 at 1:26 PM, Leonard Crestez wrote: > > > > > +                       tempmon: tempmon { > > +                               compatible = "fsl,imx6ul-tempmon", "fsl,imx6sx-tempmon"; > > +                               interrupts = ; > > +                               fsl,tempmon = <&anatop>; > > +                               fsl,tempmon-data = <&ocotp>; > > +                               clocks = <&clks IMX6UL_CLK_PLL3_USB_OTG>; > Does the IMX6UL_CLK_PLL3_USB_OTG clock really control tempmon? Please > double check. Yes, as far as I can tell the tempmon block uses the 480 Mhz PLL3 clock directly. This is similar to other imx6 SOCs. This PLL is used for stuff like USB but not only that. My understanding is the _USB_OTG suffix is descriptive, similar to PLL4_AUDIO and PLL6_ENET. Other non- usb components use PLL3 (like UART) but through other gates/dividers. Setting this to IMX6UL_CLK_DUMMY will cause temperature reads to fail. Even if PLL3 usually ends up being constantly enabled because of uarts this is not true at imx_thermal_probe time (or uarts can be disabled). -- Regards, Leonard