From: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
To: matti.vaittinen@fi.rohmeurope.com, mazziesaccount@gmail.com
Cc: lgirdwood@gmail.com, broonie@kernel.org, sre@kernel.org,
brendanhiggins@google.com, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v12 06/11] dt-bindings: battery: add new battery parameters
Date: Fri, 8 May 2020 18:46:17 +0300 [thread overview]
Message-ID: <6cfb1a37acc763143927b9541744b7bb66fbd2d8.1588944082.git.matti.vaittinen@fi.rohmeurope.com> (raw)
In-Reply-To: <cover.1588944082.git.matti.vaittinen@fi.rohmeurope.com>
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 <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
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
--
2.21.0
--
Matti Vaittinen, Linux device drivers
ROHM Semiconductors, Finland SWDC
Kiviharjunlenkki 1E
90220 OULU
FINLAND
~~~ "I don't think so," said Rene Descartes. Just then he vanished ~~~
Simon says - in Latin please.
~~~ "non cogito me" dixit Rene Descarte, deinde evanescavit ~~~
Thanks to Simon Glass for the translation =]
next prev parent reply other threads:[~2020-05-08 15:47 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 15:38 [PATCH v12 00/11] Support ROHM BD99954 charger IC Matti Vaittinen
2020-05-08 15:39 ` [PATCH v12 01/11] lib: add linear ranges helpers Matti Vaittinen
2020-05-08 15:40 ` [PATCH v12 02/11] lib/test_linear_ranges: add a test for the 'linear_ranges' Matti Vaittinen
2020-05-08 17:17 ` Mark Brown
2020-05-08 18:42 ` Vaittinen, Matti
2020-05-11 10:13 ` Mark Brown
2020-05-09 15:17 ` Vaittinen, Matti
2020-05-08 15:41 ` [PATCH v12 03/11] power: supply: bd70528: rename linear_range to avoid collision Matti Vaittinen
2020-05-08 15:43 ` [PATCH v12 04/11] regulator: use linear_ranges helper Matti Vaittinen
2020-05-08 15:44 ` [PATCH v12 05/11] power: supply: bd70528: use linear ranges Matti Vaittinen
2020-05-08 15:46 ` Matti Vaittinen [this message]
2020-05-08 15:47 ` [PATCH v12 07/11] power: supply: add battery parameters Matti Vaittinen
2020-05-08 15:48 ` [PATCH v12 08/11] dt_bindings: ROHM BD99954 Charger Matti Vaittinen
2020-05-08 15:49 ` [PATCH v12 09/11] power: supply: Support ROHM bd99954 charger Matti Vaittinen
2020-05-08 15:50 ` Matti Vaittinen
2020-05-08 15:59 ` Vaittinen, Matti
2020-05-08 17:44 ` sre
2020-05-08 15:51 ` [PATCH v12 10/11] power: supply: Fix Kconfig help text indentiation Matti Vaittinen
2020-05-08 15:52 ` [PATCH v12 11/11] power: supply: KConfig cleanup default n Matti Vaittinen
2020-05-08 17:13 ` [PATCH v12 00/11] Support ROHM BD99954 charger IC Mark Brown
2020-05-08 17:20 ` Mark Brown
2020-05-10 0:32 ` Sebastian Reichel
2020-05-10 16:04 ` Sebastian Reichel
2020-05-10 18:51 ` Vaittinen, Matti
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