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Groups > linux.kernel > #1436967
| From | Bruno Prémont <bonbons@linux-vserver.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [linux-sunxi] [PATCH 2/4] power: add axp20x-battery driver |
| Date | 2016-07-05 14:50 +0200 |
| Message-ID | <rRxXz-2Re-5@gated-at.bofh.it> (permalink) |
| References | <rRrfr-73n-3@gated-at.bofh.it> <rRrfr-73n-5@gated-at.bofh.it> <rRrfr-73n-1@gated-at.bofh.it> <rRxXz-2Re-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Tue, 05 Jul 2016 16:47:38 +0800 Icenowy Zheng wrote: > I read the datasheet of axp20x, and then found that this driver does > not support backup RTC battery. > (But maybe backup battery do not need a driver -- at least on IBM PC > it has no driver) A driver is needed to enable/disable the RTC battery charging (unless uboot does it). However all the driver can do according to datasheet is configure the charge voltage/current or disable charging completely. Monitoring RTC battery is not possible, neither is presence detection. So driver should just apply configuration it finds in device-tree and eventually share that information via power supply class. > And I don't know whether the axp20x has default Li-ion/LiPo battery > OCV parameter. (axp22x seems to be have a set of default OCV) It seems to have default OCV parameters as well. With empty RTC battery OCV values are present. > You can test this driver on AXP20x. (I think I didn't access to > AXP22x-specified registers in the power supply code) Bruno
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Re: [linux-sunxi] [PATCH 2/4] power: add axp20x-battery driver Michael Haas <michael.haas@mailbox.org> - 2016-07-05 07:40 +0200
Re: [linux-sunxi] [PATCH 2/4] power: add axp20x-battery driver "maxime.ripard@free-electrons.com" <maxime.ripard@free-electrons.com> - 2016-07-05 11:30 +0200
Re: [linux-sunxi] [PATCH 2/4] power: add axp20x-battery driver Bruno Prémont <bonbons@linux-vserver.org> - 2016-07-05 15:00 +0200
Re: [linux-sunxi] [PATCH 2/4] power: add axp20x-battery driver Bruno Prémont <bonbons@linux-vserver.org> - 2016-07-05 14:50 +0200
Re: [linux-sunxi] [PATCH 2/4] power: add axp20x-battery driver Michael Haas <haas@computerlinguist.org> - 2016-07-06 06:40 +0200
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