| Message ID | 20200119195659.18273-1-tony@atomide.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM: dts: omap4-droid4: Enable hdq for droid4 ds250x 1-wire battery nvmem | expand |
On Sun 2020-01-19 11:56:59, Tony Lindgren wrote: > With "[PATCHv3] w1: omap-hdq: Simplify driver with PM runtime autosuspend" > we can read the droid4 battery information over 1-wire with this patch > with something like: > > # modprobe omap_hdq > # hd /sys/bus/w1/devices/89-*/89-*/nvmem > ... > > Unfortunately the format of the battery data seems to be Motorola specific > and is currently unusable for battery charger unless somebody figures out > what it means. > > Note that currently keeping omap_hdq module loaded will cause extra power > consumption as it seems to scan devices periodically. > > Cc: Merlijn Wajer <merlijn@wizzup.org> Acked-by: Pavel Machek <pavel@ucw.cz> Not for stable. Pavel
diff --git a/arch/arm/boot/dts/motorola-mapphone-common.dtsi b/arch/arm/boot/dts/motorola-mapphone-common.dtsi --- a/arch/arm/boot/dts/motorola-mapphone-common.dtsi +++ b/arch/arm/boot/dts/motorola-mapphone-common.dtsi @@ -259,6 +259,13 @@ }; }; +/* Battery NVRAM on 1-wire handled by w1_ds250x driver */ +&hdqw1w { + pinctrl-0 = <&hdq_pins>; + pinctrl-names = "default"; + ti,mode = "1w"; +}; + &i2c1 { tmp105@48 { compatible = "ti,tmp105"; @@ -449,6 +456,13 @@ >; }; + hdq_pins: pinmux_hdq_pins { + pinctrl-single,pins = < + /* 0x4a100120 hdq_sio.hdq_sio aa27 */ + OMAP4_IOPAD(0x120, PIN_INPUT | MUX_MODE0) + >; + }; + /* hdmi_cec.hdmi_cec, hdmi_scl.hdmi_scl, hdmi_sda.hdmi_sda */ dss_hdmi_pins: pinmux_dss_hdmi_pins { pinctrl-single,pins = <
With "[PATCHv3] w1: omap-hdq: Simplify driver with PM runtime autosuspend" we can read the droid4 battery information over 1-wire with this patch with something like: # modprobe omap_hdq # hd /sys/bus/w1/devices/89-*/89-*/nvmem ... Unfortunately the format of the battery data seems to be Motorola specific and is currently unusable for battery charger unless somebody figures out what it means. Note that currently keeping omap_hdq module loaded will cause extra power consumption as it seems to scan devices periodically. Cc: Merlijn Wajer <merlijn@wizzup.org> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Tony Lindgren <tony@atomide.com> --- arch/arm/boot/dts/motorola-mapphone-common.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+)