From 2256e6f68c9e02524182640ba9584d978d490145 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Sun, 19 Jan 2020 11:56:59 -0800 Subject: ARM: dts: omap4-droid4: Enable hdq for droid4 ds250x 1-wire battery nvmem 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 Cc: Pavel Machek Acked-by: Pavel Machek Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/motorola-mapphone-common.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'arch/arm/boot') diff --git a/arch/arm/boot/dts/motorola-mapphone-common.dtsi b/arch/arm/boot/dts/motorola-mapphone-common.dtsi index da6b107da84a..9f3e89bcb496 100644 --- a/arch/arm/boot/dts/motorola-mapphone-common.dtsi +++ b/arch/arm/boot/dts/motorola-mapphone-common.dtsi @@ -249,6 +249,13 @@ }; }; +/* 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"; @@ -440,6 +447,13 @@ >; }; + 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 = < -- cgit v1.2.3-59-g8ed1b