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 X-Spam-Level: X-Spam-Status: No, score=0.2 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CF5CCECDFAA for ; Wed, 18 Jul 2018 08:49:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 849032075A for ; Wed, 18 Jul 2018 08:49:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=micronovasrl.com header.i=@micronovasrl.com header.b="Z8/pCAhs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 849032075A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=micronovasrl.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730521AbeGRJ0R (ORCPT ); Wed, 18 Jul 2018 05:26:17 -0400 Received: from mail.micronovasrl.com ([212.103.203.10]:58858 "EHLO mail.micronovasrl.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730248AbeGRJ0R (ORCPT ); Wed, 18 Jul 2018 05:26:17 -0400 Received: from mail.micronovasrl.com (mail.micronovasrl.com [127.0.0.1]) by mail.micronovasrl.com (Postfix) with ESMTP id 5DD10B007CC for ; Wed, 18 Jul 2018 10:49:26 +0200 (CEST) Authentication-Results: mail.micronovasrl.com (amavisd-new); dkim=pass reason="pass (just generated, assumed good)" header.d=micronovasrl.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=micronovasrl.com; h=x-mailer:message-id:date:date:subject:subject:to:from:from; s=dkim; t=1531903765; x=1532767766; bh=kkvTli6Wm+g+qs5agjUmcevn d7SopXKN/9NY9qQvMiU=; b=Z8/pCAhsxan2pcInT1uJ2ETdgA9GYoJUYv3blmrK EUpXw7Mcvon9Arh+jYlkcTNU8K3oqn+BbqQSNyXm1pVv3f7dqzRGQBXeDOR70V4T Z65mqA79GuuPvN9zuCeJcqLCx4td48SVxH+SZtXVbdiT0Abj/NJHPEoqnRz59geT Vug= X-Virus-Scanned: Debian amavisd-new at mail.micronovasrl.com Received: from mail.micronovasrl.com ([127.0.0.1]) by mail.micronovasrl.com (mail.micronovasrl.com [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id LVP41dUki1ni for ; Wed, 18 Jul 2018 10:49:25 +0200 (CEST) Received: from localhost.localdomain (62-11-51-166.dialup.tiscali.it [62.11.51.166]) by mail.micronovasrl.com (Postfix) with ESMTPSA id 82AE7B002CE; Wed, 18 Jul 2018 10:49:24 +0200 (CEST) From: Giulio Benetti To: Alexandre Belloni Cc: Giulio Benetti , Alessandro Zummo , Rob Herring , Mark Rutland , linux-rtc@vger.kernel.org (open list:REAL TIME CLOCK (RTC) SUBSYSTEM), devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v7 2/4] rtc: ds1307: support m41t11 variant Date: Wed, 18 Jul 2018 10:49:13 +0200 Message-Id: <20180718084916.79837-1-giulio.benetti@micronovasrl.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The m41t11 variant is very similar to the already supported m41t00 and m41t0, but it has also 56 bytes of NVRAM. Add it to driver taking into account NVRAM section. Signed-off-by: Giulio Benetti --- V6 => V7 * already applied .../devicetree/bindings/rtc/rtc-ds1307.txt | 1 + drivers/rtc/rtc-ds1307.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/rtc/rtc-ds1307.txt b/Documentation/devicetree/bindings/rtc/rtc-ds1307.txt index d28d6e7f6ae8..ce6469c1a516 100644 --- a/Documentation/devicetree/bindings/rtc/rtc-ds1307.txt +++ b/Documentation/devicetree/bindings/rtc/rtc-ds1307.txt @@ -13,6 +13,7 @@ Required properties: "maxim,ds3231", "st,m41t0", "st,m41t00", + "st,m41t11", "microchip,mcp7940x", "microchip,mcp7941x", "pericom,pt7c4338", diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index aa4a161bae98..0162a600ff1b 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -44,6 +44,7 @@ enum ds_type { ds_3231, m41t0, m41t00, + m41t11, mcp794xx, rx_8025, rx_8130, @@ -227,6 +228,11 @@ static const struct chip_desc chips[last_ds_type] = { .irq_handler = rx8130_irq, .rtc_ops = &rx8130_rtc_ops, }, + [m41t11] = { + /* this is battery backed SRAM */ + .nvram_offset = 8, + .nvram_size = 56, + }, [mcp794xx] = { .alarm = 1, /* this is battery backed SRAM */ @@ -249,6 +255,7 @@ static const struct i2c_device_id ds1307_id[] = { { "ds3231", ds_3231 }, { "m41t0", m41t0 }, { "m41t00", m41t00 }, + { "m41t11", m41t11 }, { "mcp7940x", mcp794xx }, { "mcp7941x", mcp794xx }, { "pt7c4338", ds_1307 }, @@ -305,6 +312,10 @@ static const struct of_device_id ds1307_of_match[] = { .compatible = "st,m41t00", .data = (void *)m41t00 }, + { + .compatible = "st,m41t11", + .data = (void *)m41t11 + }, { .compatible = "microchip,mcp7940x", .data = (void *)mcp794xx @@ -347,6 +358,7 @@ static const struct acpi_device_id ds1307_acpi_ids[] = { { .id = "DS3231", .driver_data = ds_3231 }, { .id = "M41T0", .driver_data = m41t0 }, { .id = "M41T00", .driver_data = m41t00 }, + { .id = "M41T11", .driver_data = m41t11 }, { .id = "MCP7940X", .driver_data = mcp794xx }, { .id = "MCP7941X", .driver_data = mcp794xx }, { .id = "PT7C4338", .driver_data = ds_1307 }, @@ -1576,6 +1588,7 @@ static int ds1307_probe(struct i2c_client *client, case ds_1307: case m41t0: case m41t00: + case m41t11: /* clock halted? turn it on, so clock can tick. */ if (tmp & DS1307_BIT_CH) { regmap_write(ds1307->regmap, DS1307_REG_SECS, 0); @@ -1641,6 +1654,7 @@ static int ds1307_probe(struct i2c_client *client, case ds_1340: case m41t0: case m41t00: + case m41t11: /* * NOTE: ignores century bits; fix before deploying * systems that will run through year 2100. -- 2.17.1