From patchwork Tue Jan 8 18:54:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Ravnborg X-Patchwork-Id: 1022100 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ravnborg.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Kf7Z/iTk"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43Z1fQ5lMlz9sDn for ; Wed, 9 Jan 2019 05:55:10 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729033AbfAHSyn (ORCPT ); Tue, 8 Jan 2019 13:54:43 -0500 Received: from mail-lj1-f196.google.com ([209.85.208.196]:35250 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728484AbfAHSym (ORCPT ); Tue, 8 Jan 2019 13:54:42 -0500 Received: by mail-lj1-f196.google.com with SMTP id x85-v6so4344918ljb.2; Tue, 08 Jan 2019 10:54:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=ETDqOF4bAwwBfWUMhw5KfrkBn9FRtphGWxtS6EWrTkg=; b=Kf7Z/iTkm1YXWGinu5RBDLKaiahUux/K3RG8yvYGGxaCDP/s2+mQq97lpPDIygbMZL rDOo/HbvfCoBn6AFREyyyOj2p4WGtv1/lVJqRSXVZq1ZGPP9tkOpcYT/dqjgylFmeHZh fRAuHMvQLRpSf1TsY+l7/1E+UGco66u5NzfPIA24ryxrL2UN0wvO1VPYr0ZGnXlej5sh x7RY8tedeOtfugOSk/g0qn+BsLqxtX+Ycr4hmnZcljbGakol2UwIcHpmJ4r77ce0oqyD JKm7SZLslJMd0SmHvvgwqLefNjNWDRPdh8V59qcMF9w4KMfTZqLOWzB0dgokrJIZrVBE 3ihw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=ETDqOF4bAwwBfWUMhw5KfrkBn9FRtphGWxtS6EWrTkg=; b=amq/1VcFiO0Ft5PG4EzqGyHZ2pia8dHho5fhfA/dSzhD1yo/N57oDhQaqNeup0Jp1q pH4a6XdQVUyEUEmP+r5lfcgpVrxswUj0Cy9czjb/6LH0czSxaAhE2FCNsfSKop0qzeNC /qqWJ/fW22ptg4be9/xqd2JIRprBf63KH91uzvlj5PrnYMy3rdl8TQusQj02TgbW0ylX SPacWmWyIXG3jC+OYVnFCVIEhsGndHWYlNt1Efqh4o44NaFBIoSbmCzNYFw9DdZNh1nW ULHyJw50Do/6LZqsRc8ZZli2esU6mHazDReZNEUjRE7bKO4D+ReXt26T/RPyXfSfaQNC 3tmA== X-Gm-Message-State: AJcUukfdBNpR/HQBb/Y5e+1vrnTEWY0+vrbfnZeshmQrSZWMsWI4NC1R crXIla+g59hLQakD9khuZBs= X-Google-Smtp-Source: ALg8bN7BwCMqQrOwN40k32aHt7hpdKqq2sWZxX5bnE58huJGq5kCBB5TrT74l2b+qlJVjYNtEwNxaQ== X-Received: by 2002:a2e:92ca:: with SMTP id k10-v6mr448152ljh.63.1546973679592; Tue, 08 Jan 2019 10:54:39 -0800 (PST) Received: from jupiter.lan (18.158-248-194.customer.lyse.net. [158.248.194.18]) by smtp.gmail.com with ESMTPSA id a11sm13321648lff.68.2019.01.08.10.54.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Jan 2019 10:54:39 -0800 (PST) From: Sam Ravnborg To: Alessandro Zummo , Alexandre Belloni , Andrew Jeffery , Fabio Estevam , Joel Stanley , Mark Rutland , Rob Herring , Russell King , Sascha Hauer , =?utf-8?q?Urs_F=C3=A4ssler?= , Shawn Guo , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rtc@vger.kernel.org Cc: Sam Ravnborg , Rob Herring Subject: [PATCH v2 1/5] devicetree: property-units: Add femtofarads unit Date: Tue, 8 Jan 2019 19:54:10 +0100 Message-Id: <20190108185414.26922-2-sam@ravnborg.org> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20190108185414.26922-1-sam@ravnborg.org> References: <20190108185414.26922-1-sam@ravnborg.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org When dealing with capacitance of 0.5 pF then a smaller unit is preferred. Add femtofarads to deal with this. Signed-off-by: Sam Ravnborg Cc: Rob Herring Cc: Mark Rutland Cc: Alessandro Zummo Cc: Alexandre Belloni Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/property-units.txt | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/property-units.txt b/Documentation/devicetree/bindings/property-units.txt index 45ce054d844d..bfd33734faca 100644 --- a/Documentation/devicetree/bindings/property-units.txt +++ b/Documentation/devicetree/bindings/property-units.txt @@ -31,6 +31,7 @@ Electricity -microwatt-hours: micro Watt-hours -microvolt : micro volts -picofarads : picofarads +-femtofarads : femtofarads Temperature ---------------------------------------- From patchwork Tue Jan 8 18:54:11 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sam Ravnborg X-Patchwork-Id: 1022098 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ravnborg.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="kEx7NWDK"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43Z1fP2wFnz9sDT for ; Wed, 9 Jan 2019 05:55:09 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729100AbfAHSyq (ORCPT ); Tue, 8 Jan 2019 13:54:46 -0500 Received: from mail-lj1-f195.google.com ([209.85.208.195]:44452 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728484AbfAHSyp (ORCPT ); Tue, 8 Jan 2019 13:54:45 -0500 Received: by mail-lj1-f195.google.com with SMTP id k19-v6so4292807lji.11; Tue, 08 Jan 2019 10:54:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9KlJyAU1h4/N8SK8wouQfQ15knLJxHRRdyRexKmVSFc=; b=kEx7NWDKR4q7vG5y2Cw+JxUFO05iHPNDnHxWIPfAr6QD0sH88twoXSn1B07tejzGMG YBnv3v3wcLvyX93ahJzRUb0R7gBxsuZYq+ZGJ72AHWEbtBbz4zAcdbp+OPDwq0OYVxBk XY3wpJiPx7i5fTKbmHEcv8zmE4lfvpnCGaMH1NB020qT2E3Rv+5ty0xQ4EljIDnZM0en 3Q52su4RrD38xEpbffF/h9gyKZkNn8Zl4YPFNiqDZtCA5+1RIg9bFPUTDZimQa878JdC oNrhANw9iYNIjwCxVVQQ+XkJpZXTS1YbmzY91W9uDnl7Av6uVCPMb9PztsQ23cDUCmwI x0rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=9KlJyAU1h4/N8SK8wouQfQ15knLJxHRRdyRexKmVSFc=; b=SHXCYCbzDJC/2DcO8z0TC+IxZxAMgrFmXZo/QeYro+iYgs/nQloQUUsczyKPk79E21 jR5urmhyDSF1ggg1mqja6xo6prOtlWSBbEeDjGeSXtOtCzfSHlsDokgFKyybQWnjejp1 toWX9QT09bQdkKPCW+1ULHhfadLy9JYikc69Eibgy52jx5fJk8imgZzvdZwhe5c67BZe SU6jE0Z6rIWiMKLHQ/UbYh1c2LZbU6lncHK+cTk8lcFEc5lkwC1ADfhVvoKuEuBUZihK Myqmy4J71K3J707P9Hn+HLow5jatCi3pu6xfxZ283FLeNeqtvMDxL4LrLx1pm12lxUBE XF8g== X-Gm-Message-State: AJcUuke2xNgJfDJalVh7ZwCrkMrt8Cb2xzQUU6YVJkIuS7bZoikawEMi 6txUi+VELw0v81+oYEYXg04= X-Google-Smtp-Source: ALg8bN5YinGcYnbvrjj6tdgo5vIjAqUWqJrfQtdIlwVpYI/ef6WoUvFF45CbyFPzNCm6Juyn54yujg== X-Received: by 2002:a2e:86ca:: with SMTP id n10-v6mr1665068ljj.49.1546973682153; Tue, 08 Jan 2019 10:54:42 -0800 (PST) Received: from jupiter.lan (18.158-248-194.customer.lyse.net. [158.248.194.18]) by smtp.gmail.com with ESMTPSA id a11sm13321648lff.68.2019.01.08.10.54.41 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Jan 2019 10:54:41 -0800 (PST) From: Sam Ravnborg To: Alessandro Zummo , Alexandre Belloni , Andrew Jeffery , Fabio Estevam , Joel Stanley , Mark Rutland , Rob Herring , Russell King , Sascha Hauer , =?utf-8?q?Urs_F=C3=A4ssler?= , Shawn Guo , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rtc@vger.kernel.org Cc: Sam Ravnborg , =?utf-8?q?S=C3=B8ren_Andersen?= Subject: [PATCH v2 2/5] dt-binding: pcf8523: add xtal load capacitance Date: Tue, 8 Jan 2019 19:54:11 +0100 Message-Id: <20190108185414.26922-3-sam@ravnborg.org> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20190108185414.26922-1-sam@ravnborg.org> References: <20190108185414.26922-1-sam@ravnborg.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The NXP pcf8523 supports two different xtal load capacitance - 7000fF (7pF) HW default - 12500fF (12.5pF) Minimum power consumption, driver default To obtain a precise RTC the pcf8523 must be configured with the correct capacitance load of the xtal. Add a property to specify the xtal capacitance load. The default value matches that of the current Linux driver. With a dedicated binding remove the entry in rtc.txt Signed-off-by: Søren Andersen Signed-off-by: Sam Ravnborg Cc: Alessandro Zummo Cc: Alexandre Belloni Cc: Rob Herring Cc: Mark Rutland Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt | 18 ++++++++++++++++++ Documentation/devicetree/bindings/rtc/rtc.txt | 1 - 2 files changed, 18 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt b/Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt new file mode 100644 index 000000000000..214ac5d26df7 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/nxp,pcf8523.txt @@ -0,0 +1,18 @@ +* NXP PCF8523 Real Time Clock + +Required properties: +- compatible: Should contain "nxp,pcf8523". +- reg: I2C address for chip. + +Optional property: +- quartz-load-femtofarads: The capacitive load of the quartz(x-tal), + expressed in femto Farad (fF). Valid values are 7000 and 12500. + Default value (if no value is specified) is 12500fF. + +Example: + +pcf8523: pcf8523@68 { + compatible = "nxp,pcf8523"; + reg = <0x68>; + quartz-load-femtofarads = <7000>; +}; diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt index 7c8da6926095..e07b15d151ac 100644 --- a/Documentation/devicetree/bindings/rtc/rtc.txt +++ b/Documentation/devicetree/bindings/rtc/rtc.txt @@ -51,7 +51,6 @@ isil,isl12022 Intersil ISL12022 Real-time Clock microcrystal,rv3029 Real Time Clock Module with I2C-Bus nxp,pcf2127 Real-time clock nxp,pcf2129 Real-time clock -nxp,pcf8523 Real-time Clock nxp,pcf8563 Real-time clock/calendar nxp,pcf85063 Tiny Real-Time Clock pericom,pt7c4338 Real-time Clock Module From patchwork Tue Jan 8 18:54:12 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Sam Ravnborg X-Patchwork-Id: 1022097 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ravnborg.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="O207XpcR"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43Z1fN1R0Tz9sDT for ; Wed, 9 Jan 2019 05:55:08 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729116AbfAHSyq (ORCPT ); Tue, 8 Jan 2019 13:54:46 -0500 Received: from mail-lj1-f194.google.com ([209.85.208.194]:44454 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729080AbfAHSyq (ORCPT ); Tue, 8 Jan 2019 13:54:46 -0500 Received: by mail-lj1-f194.google.com with SMTP id k19-v6so4292884lji.11; Tue, 08 Jan 2019 10:54:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=4Jxc09nR2EzuAI4Quh7s7X+Br0y1JbQDF3E2+ykcUnI=; b=O207XpcReODflK0r4occHODJUvXmZlg4+FTU71Fj37O3nFCbiCHcj1uuIESE0I9e9c MUv8dGIadhqsMurTBErqqNAlfuZ93ZjEpRE40GlUrYBp6/9OHWCeSUmxJYcE4Ymo3O16 4ccEmTXhBamd/kcEm3XKUHOxMgXvJ0o4J8Zmddw0TuGPvI6mJ/VGjiTauTlqnLtMDxgz cjOqGRdsgUSP7vqSMpjd7dWRdszUCEI2JLmU0AAhkjBiGBxm6adsPyuwHZ5zWozWFIU/ EWYUgsbUPdmlqtsyI/Nrp35WJ2zgC1hl8N7S3yiAaxXBcp4nqrlfBeC8Uu5o/jg9kzjB Yzeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=4Jxc09nR2EzuAI4Quh7s7X+Br0y1JbQDF3E2+ykcUnI=; b=mN72LILgRYygvpp80nlMF526fqZ4O7q6CFc1W+9V2M4ixrgbzyoL/SAb4zSl0z+8wd kGKl6EM8JTFyfMhRHbLEAkgkYJ81cjzNcWu6FyBiHeQikuVmTK7E4lpwZI2z3H4a7DoZ mvQt7C8k8LAT6v2sszoI4dy0Ifyi3uemnLIw1lCPmeYoCOGJbNZ2c1YAvcxta61EHMm5 ipplylU19h3ImnZf23tTI+SrxV/ejdJvLe2K+iAvkeowOSVcFdy/LjAGDTZlU/EwXWLL z4S4b7rgnJ8AHdFTOOJ5EG0RWkw06LsTy34G37CP/t/jiKWzGCgqqP0DiCBDy6bHq46o 7+2g== X-Gm-Message-State: AJcUukd/jPGL3HO3WNtga9JjTeMbmyHc5V0qFR6G5yeJfXdAqdOBu+tX +UMW0bm4XeQLbY3bz1YjbHc= X-Google-Smtp-Source: ALg8bN7X8nkPtp446DV1G+m+O+Jw38/ARvRpiPBJD+CyaYM2T1pu2X+P51I245aLys1KpjBI6Ses4Q== X-Received: by 2002:a2e:868c:: with SMTP id l12-v6mr1902323lji.90.1546973683926; Tue, 08 Jan 2019 10:54:43 -0800 (PST) Received: from jupiter.lan (18.158-248-194.customer.lyse.net. [158.248.194.18]) by smtp.gmail.com with ESMTPSA id a11sm13321648lff.68.2019.01.08.10.54.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 08 Jan 2019 10:54:43 -0800 (PST) From: Sam Ravnborg To: Alessandro Zummo , Alexandre Belloni , Andrew Jeffery , Fabio Estevam , Joel Stanley , Mark Rutland , Rob Herring , Russell King , Sascha Hauer , =?utf-8?q?Urs_F=C3=A4ssler?= , Shawn Guo , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rtc@vger.kernel.org Cc: Sam Ravnborg , =?utf-8?q?S=C3=B8ren_Andersen?= Subject: [PATCH v2 3/5] dt-binding: pcf85063: add xtal load capacitance Date: Tue, 8 Jan 2019 19:54:12 +0100 Message-Id: <20190108185414.26922-4-sam@ravnborg.org> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20190108185414.26922-1-sam@ravnborg.org> References: <20190108185414.26922-1-sam@ravnborg.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The NXP pcf85063 supports two different xtal load capacitance - 7000fF (7pF) HW default, Linux driver default - 12500fF (12.5pF) Minimum power consumption To obtain a precise RTC the pcf85063 must be configured with the correct capacitance load of the xtal. Add a property to specify the xtal capacitance load. The default value matches that of the current Linux driver. With a dedicated binding remove the entry in rtc.txt Signed-off-by: Søren Andersen Signed-off-by: Sam Ravnborg Cc: Alessandro Zummo Cc: Alexandre Belloni Cc: Rob Herring Cc: Mark Rutland Cc: Urs Fässler --- Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt | 18 ++++++++++++++++++ Documentation/devicetree/bindings/rtc/rtc.txt | 1 - 2 files changed, 18 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt new file mode 100644 index 000000000000..ad5e8eaa370e --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.txt @@ -0,0 +1,18 @@ +* NXP PCF85063 Real Time Clock + +Required properties: +- compatible: Should contain "nxp,pcf85063". +- reg: I2C address for chip. + +Optional property: +- quartz-load-femtofarads: The capacitive load of the quartz(x-tal), + expressed in femto Farad (fF). Valid values are 7000 and 12500. + Default value (if no value is specified) is 7000fF. + +Example: + +pcf85063: pcf85063@51 { + compatible = "nxp,pcf85063"; + reg = <0x51>; + quartz-load-femtofarads = <12500>; +}; diff --git a/Documentation/devicetree/bindings/rtc/rtc.txt b/Documentation/devicetree/bindings/rtc/rtc.txt index e07b15d151ac..efac6dc5b914 100644 --- a/Documentation/devicetree/bindings/rtc/rtc.txt +++ b/Documentation/devicetree/bindings/rtc/rtc.txt @@ -52,7 +52,6 @@ microcrystal,rv3029 Real Time Clock Module with I2C-Bus nxp,pcf2127 Real-time clock nxp,pcf2129 Real-time clock nxp,pcf8563 Real-time clock/calendar -nxp,pcf85063 Tiny Real-Time Clock pericom,pt7c4338 Real-time Clock Module ricoh,r2025sd I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC ricoh,r2221tl I2C bus SERIAL INTERFACE REAL-TIME CLOCK IC