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add smb358 to p5001 #378

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add smb358 to p5001 #378

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69 changes: 65 additions & 4 deletions arch/arm/boot/dts/qcom/qcom-msm8909-lenovo-lxf-p5100.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/pinctrl/qcom,pmic-mpp.h>
#include <dt-bindings/power/summit,smb347-charger.h>

/ {
model = "Lenovo Yoga Tab 3 10 LTE";
Expand Down Expand Up @@ -119,6 +120,28 @@
pinctrl-0 = <&ts_vdd_default>;
pinctrl-names = "default";
};

/*
In this device (and some other Longcheer made device),
there is mux chip.
It is for controling where the micro usb's id pinout is conected to.

By default , the mux chip conected gpio 37 (FORCE_USB_BOOT pin) to the usb id
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@exkc exkc Nov 7, 2024 •
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The msm8916 's usb id pin is gpio110 but it seem msm8909 usb id pin isnt a gpio pin and i dont think it is possiable to use that pin in mainline

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humm digged a bit more msm8916 's usb id pin is controlled by pinctrl driver in downsteam (Ofc that pin is a gpio pin) but msm8909 usb id pin is controlled by the phy driver it seem.

but ideally, we need to send signal to the mux chip
for making the mux chip connect the micro usb's id pin
to the changer as well as msm8909's usb id pin
so we can set up the usb properly by
setting the changer and the msm8909's usb id pin as the extcon for usb.

However due to msm8909's usb id pin is useable in mainline as of now,
we workaround that by setting gpio37 as extcon for the usb.
*/
usb_id: usb-id {
compatible = "linux,extcon-usb-gpio";
id-gpios = <&tlmm 37 GPIO_ACTIVE_HIGH>;
pinctrl-0 = <&usb_id_default &usb_id_mux_default>;
pinctrl-names = "default";
};
};

&blsp_i2c1 {
Expand All @@ -141,7 +164,7 @@
compatible = "si-en,sn3191";
reg = <0x68>;
#address-cells = <1>;
#size-cells = <0>;
#size-cells = <1>;
shutdown-gpios = <&tlmm 27 GPIO_ACTIVE_HIGH>;

led@1 {
Expand All @@ -153,6 +176,28 @@
};
};

&blsp_i2c4 {
status = "okay";
changer: charger@57 {
compatible = "summit,smb358";
reg = <0x57>;
summit,enable-usb-charging;
summit,enable-charge-control = <SMB3XX_CHG_ENABLE_SW>;
summit,fast-voltage-threshold-microvolt = <2600000>;
summit,chip-temperature-threshold-celsius = <130>;
summit,usb-current-limit-microamp = <1800000>;

monitored-battery = <&battery>;
usb_vbus: usb-vbus {
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-min-microamp = <750000>;
regulator-max-microamp = <750000>;
};
};
};

&blsp_i2c5 {
status = "okay";

Expand Down Expand Up @@ -313,13 +358,14 @@
};

&usb {
dr_mode = "peripheral";
extcon = <&pm8909_usbin>;
dr_mode = "otg";
vbus-supply = <&usb_vbus>;
extcon = <&usb_id>, <&usb_id>;
status = "okay";
};

&usb_hs_phy {
extcon = <&pm8909_usbin>;
extcon = <&usb_id>;
status = "okay";
};

Expand Down Expand Up @@ -377,4 +423,19 @@
bias-disable;
};
};

usb_id_default: usb-id-default-state {
pins = "gpio37";
function = "gpio";
drive-strength = <8>;
bias-pull-up;
};

/* Keeping the mux chip in default state */
usb_id_mux_default: usb-id-mux-default-state {
pins = "gpio0";
function = "gpio";
drive-strength = <2>;
output-low;
};
};
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