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arm64: dts: qcom: Force host mode for USB on apq8016-sbc 

Commit ed75d6a969 ("arm64: dts: qcom: Collapse usb support into
one node") breaks host mode support on apq8016-sbc boards. This
is because the mux driver (tc7usb40mu) hasn't been merged.
Without that driver, we can't toggle the GPIO going to the mux to
route out the D+/D- lines to the USB hub that's on the board.

One solution would be to totally revert this change, but that
opens us up to other problems when two USB drivers are operating
the same hardware block at the same time. Let's modify the DT so
that the USB controller is always in host mode and connected to
the hub so that things like USB keyboards and mouses work. This
is the mode that most people prefer anyway with these devices. We
also delete the usb-switch node because the binding was never
accepted upstream.

In the future, we can add muxing support and then update the DT
to support both modes at runtime. Patches to support this are
already on the mailing list.

Fixes: ed75d6a969 ("arm64: dts: qcom: Collapse usb support into one node")
Reported-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This commit is contained in:
Stephen Boyd 2017-07-13 19:20:42 -07:00 committed by Andy Gross
parent 5771a8c088
commit 2691cb4e42
2 changed files with 6 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/qcom/apq8016-sbc-pmic-pins.dtsi
View File

@ -17,6 +17,7 @@
function = PMIC_GPIO_FUNC_NORMAL;
power-source = <PM8916_GPIO_VPH>;
input-disable;
output-high;
};
};

15
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
View File

@ -213,11 +213,14 @@
};
usb@78d9000 {
extcon = <&usb_id>, <&usb_id>;
extcon = <&usb_id>;
status = "okay";
adp-disable;
hnp-disable;
srp-disable;
dr_mode = "host";
pinctrl-names = "default";
pinctrl-0 = <&usb_sw_sel_pm>;
ulpi {
phy {
v1p8-supply = <&pm8916_l7>;
@ -337,19 +340,11 @@
usb_id: usb-id {
compatible = "linux,extcon-usb-gpio";
id-gpio = <&msmgpio 121 GPIO_ACTIVE_HIGH>;
vbus-gpio = <&msmgpio 121 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&usb_id_default>;
};
usb-switch {
compatible = "toshiba,tc7usb40mu";
switch-gpios = <&pm8916_gpios 4 GPIO_ACTIVE_HIGH>;
extcon = <&usb_id>;
pinctrl-names = "default";
pinctrl-0 = <&usb_sw_sel_pm>;
};
hdmi-out {
compatible = "hdmi-connector";
type = "a";