@@ -25,6 +25,11 @@ properties:
- description:
For implementations of the EC connected through SPI.
const: google,cros-ec-spi
+ - description:
+ For implementations of the FPMCU connected through SPI.
+ items:
+ - const: google,cros-ec-fp
+ - const: google,cros-ec-spi
- description:
For implementations of the EC connected through RPMSG.
const: google,cros-ec-rpmsg
@@ -67,6 +72,15 @@ properties:
interrupts:
maxItems: 1
+ reset-gpios:
+ maxItems: 1
+
+ boot0-gpios:
+ maxItems: 1
+ description: Assert for bootloader mode.
+
+ vdd-supply: true
+
wakeup-source:
description: Button can wake-up the system.
@@ -177,6 +191,41 @@ allOf:
- reg
- interrupts
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: google,cros-ec-fp
+ then:
+ properties:
+ '#address-cells': false
+ '#size-cells': false
+ typec: false
+ ec-pwm: false
+ kbd-led-backlight: false
+ keyboard-controller: false
+ proximity: false
+ codecs: false
+ cbas: false
+
+ patternProperties:
+ "^i2c-tunnel[0-9]*$": false
+ "^regulator@[0-9]+$": false
+ "^extcon[0-9]*$": false
+
+ # Using additionalProperties: false here and
+ # listing true properties doesn't work
+
+ required:
+ - reset-gpios
+ - boot0-gpios
+ - vdd-supply
+ else:
+ properties:
+ reset-gpios: false
+ boot0-gpios: false
+ vdd-supply: false
+
additionalProperties: false
examples:
@@ -232,4 +281,22 @@ examples:
compatible = "google,cros-ec-rpmsg";
};
};
+
+ # Example for FPMCU
+ - |
+ spi0 {
+ #address-cells = <0x1>;
+ #size-cells = <0x0>;
+
+ ec@0 {
+ compatible = "google,cros-ec-fp", "google,cros-ec-spi";
+ reg = <0x0>;
+ interrupt-parent = <&gpio_controller>;
+ interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
+ spi-max-frequency = <3000000>;
+ reset-gpios = <&gpio_controller 5 GPIO_ACTIVE_LOW>;
+ boot0-gpios = <&gpio_controller 10 GPIO_ACTIVE_HIGH>;
+ vdd-supply = <&pp3300_fp_mcu>;
+ };
+ };
...
Add a binding to describe the fingerprint processor found on Chromebooks with a fingerprint sensor. Previously we've been describing this with the google,cros-ec-spi binding but it lacks gpio and regulator control used during firmware flashing. Cc: Rob Herring <robh+dt@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: <devicetree@vger.kernel.org> Cc: <chrome-platform@lists.linux.dev> Cc: Guenter Roeck <groeck@chromium.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Craig Hesling <hesling@chromium.org> Cc: Tom Hughes <tomhughes@chromium.org> Cc: Alexandru M Stan <amstan@chromium.org> Cc: Tzung-Bi Shih <tzungbi@kernel.org> Cc: Matthias Kaehlcke <mka@chromium.org> Cc: Benson Leung <bleung@chromium.org> Cc: Lee Jones <lee.jones@linaro.org> Signed-off-by: Stephen Boyd <swboyd@chromium.org> --- .../bindings/mfd/google,cros-ec.yaml | 67 +++++++++++++++++++ 1 file changed, 67 insertions(+)