From patchwork Tue Mar 31 12:21:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Vaittinen, Matti" X-Patchwork-Id: 11467743 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1F1C192C for ; Tue, 31 Mar 2020 12:22:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 06E65208FE for ; Tue, 31 Mar 2020 12:22:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730442AbgCaMWC (ORCPT ); Tue, 31 Mar 2020 08:22:02 -0400 Received: from mail-lj1-f195.google.com ([209.85.208.195]:43034 "EHLO mail-lj1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730426AbgCaMWC (ORCPT ); Tue, 31 Mar 2020 08:22:02 -0400 Received: by mail-lj1-f195.google.com with SMTP id g27so21681592ljn.10; Tue, 31 Mar 2020 05:21:59 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=OWA9l6ZKGY8kl5iklzCmzeBR+Ymrqu0e6ctC5uxsn6s=; b=BUzA/q+pExyOKNBtJuMhtdaeYR7HTa6oBLlz2SUET0F8Yg2plnzF45ACM3LyfhesYU nkUEsO4ESWxi5huWQ/jcdtNKzFtREeVcU3wScp5dIMChvFU8aNPrmmL1lqM66rPDESGT W26WT3RHTJ9VNkLrYOwR/Y26X8k/Q9xDZgL8d/WKPhZjqDJt1ujF5YbE4uuA78HdZgia 5oPoXSbfgi1oz6lA8Oaep8nHf/Tl9JFOTPc+u4/PJzcLv/Fe81SUspjQTNKr9FStcUT/ LmSZSIRVYicmtLIQ1DcJHzPCzz/Tz44u/OOyMKgwvEQ+hJggJ4cTxWuv7FVfSpI9KDbX 1RNw== X-Gm-Message-State: AGi0PubWWW1MNwQl1SQxuAPqgjkyrHgNstry19f1EuaucLakPmEdd+mU eFm+XVLg1MJ1x9CqujJyMxU= X-Google-Smtp-Source: APiQypKSgx7xihoSEmJxYnnKrSIeBwuUI+aQ9UtGTwWyvPhulKprAqOR8L07FgelQAXNT1LTnefgng== X-Received: by 2002:a2e:9b41:: with SMTP id o1mr10102642ljj.145.1585657318818; Tue, 31 Mar 2020 05:21:58 -0700 (PDT) Received: from localhost.localdomain (dc7t7ryyyyyyyyyyyyybt-3.rev.dnainternet.fi. [2001:14ba:16e1:b700::3]) by smtp.gmail.com with ESMTPSA id g18sm7703606lfh.1.2020.03.31.05.21.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Mar 2020 05:21:58 -0700 (PDT) Date: Tue, 31 Mar 2020 15:21:50 +0300 From: Matti Vaittinen To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.com Cc: Greg Kroah-Hartman , Linus Walleij , Mikko Mutanen , Markus Laine , Andrew Morton , Andy Shevchenko , Andy Shevchenko , Ard Biesheuvel , Borislav Petkov , Brendan Higgins , Changbin Du , Dan Williams , David Gow , "David S. Miller" , devicetree@vger.kernel.org, Gary Hook , Herbert Xu , Krzysztof Kozlowski , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Mark Rutland , Masahiro Yamada , Masami Hiramatsu , Matti Vaittinen , Mikhail Zaslonko , Randy Dunlap , Rob Herring , Sebastian Reichel , Shuah Khan , Tal Gilboa , Thomas Gleixner , Uwe =?iso-8859-1?q?Kleine-K=F6nig?= , Vincenzo Frascino , Vladimir Oltean , Mark Brown , Liam Girdwood Subject: [PATCH v7 01/10] dt-bindings: battery: add new battery parameters Message-ID: <8827238b51029886dea56ce3141b216361a3f299.1585656143.git.matti.vaittinen@fi.rohmeurope.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add: - trickle-charge-current-microamp: Some chargers have 3 charging stages. First one when battery is almost empty is often called as trickle-charge. Last state when battery has been "woken up" is usually called as fast-charge. In addition to this some chargers have a 'middle state' which ROHM BD99954 data-sheet describes as pre-charge. Some batteries can benefit from this 3-phase charging [citation needed]. Introduce trickle-charge-current-microamp so that batteries can give charging current limit for all three states. - precharge-upper-limit-microvolt: When battery voltage has reached certain limit we change from trickle-charge to next charging state (pre-charge for BD99954). Allow battery to specify this limit. - re-charge-voltage-microvolt: Allow giving a battery specific voltage limit for chargers which can automatically re-start charging when battery has discharghed down to this limit. - over-voltage-threshold-microvolt Allow specifying voltage threshold after which the battery is assumed to be faulty. Signed-off-by: Matti Vaittinen Reviewed-by: Rob Herring --- No changes from v6 Documentation/devicetree/bindings/power/supply/battery.txt | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/power/supply/battery.txt b/Documentation/devicetree/bindings/power/supply/battery.txt index 3049cf88bdcf..5e29595edd74 100644 --- a/Documentation/devicetree/bindings/power/supply/battery.txt +++ b/Documentation/devicetree/bindings/power/supply/battery.txt @@ -11,15 +11,21 @@ different type. This prevents unpredictable, potentially harmful, behavior should a replacement that changes the battery type occur without a corresponding update to the dtb. +Please note that not all charger drivers respect all of the properties. + Required Properties: - compatible: Must be "simple-battery" Optional Properties: + - over-voltage-threshold-microvolt: battery over-voltage limit + - re-charge-voltage-microvolt: limit to automatically start charging again - voltage-min-design-microvolt: drained battery voltage - voltage-max-design-microvolt: fully charged battery voltage - energy-full-design-microwatt-hours: battery design energy - charge-full-design-microamp-hours: battery design capacity + - trickle-charge-current-microamp: current for trickle-charge phase - precharge-current-microamp: current for pre-charge phase + - precharge-upper-limit-microvolt: limit when to change to constant charging - charge-term-current-microamp: current for charge termination phase - constant-charge-current-max-microamp: maximum constant input current - constant-charge-voltage-max-microvolt: maximum constant input voltage