Rob
On 8/18/20 11:43 AM, Rob Herring wrote:
On Mon, Aug 17, 2020 at 02:17:22PM -0500, Ricardo Rivera-Matos wrote:
Add the bindings for the bq256xx series of battery charging ICs.
Datasheets:
- https://www.ti.com/lit/ds/symlink/bq25600.pdf
- https://www.ti.com/lit/ds/symlink/bq25601.pdf
- https://www.ti.com/lit/ds/symlink/bq25600d.pdf
- https://www.ti.com/lit/ds/symlink/bq25601d.pdf
- https://www.ti.com/lit/ds/symlink/bq25611d.pdf
- https://www.ti.com/lit/ds/symlink/bq25618.pdf
- https://www.ti.com/lit/ds/symlink/bq25619.pdf
Signed-off-by: Ricardo Rivera-Matos <r-rivera-matos@xxxxxx>
---
.../bindings/power/supply/bq256xx.yaml | 99 +++++++++++++++++++
1 file changed, 99 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/supply/bq256xx.yaml
diff --git a/Documentation/devicetree/bindings/power/supply/bq256xx.yaml b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml
new file mode 100644
index 000000000000..67db4ba9fdb6
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/bq256xx.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
+# Copyright (C) 2020 Texas Instruments Incorporated
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/power/supply/bq256xx.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: TI bq256xx Switch Mode Buck Charger
+
+maintainers:
+ - Ricardo Rivera-Matos <r-rivera-matos@xxxxxx>
+
+description: |
+ The bq256xx devices are a family of highly-integrated battery charge
+ management and system power management ICs for single cell Li-ion and Li-
+ polymer batteries.
+
+ Datasheets:
+ - https://www.ti.com/lit/ds/symlink/bq25600.pdf
+ - https://www.ti.com/lit/ds/symlink/bq25601.pdf
+ - https://www.ti.com/lit/ds/symlink/bq25600d.pdf
+ - https://www.ti.com/lit/ds/symlink/bq25601d.pdf
+ - https://www.ti.com/lit/ds/symlink/bq25611d.pdf
+ - https://www.ti.com/lit/ds/symlink/bq25618.pdf
+ - https://www.ti.com/lit/ds/symlink/bq25619.pdf
+
+properties:
+ compatible:
+ enum:
+ - ti,bq25600
+ - ti,bq25601
+ - ti,bq25600d
+ - ti,bq25601d
+ - ti,bq25611d
+ - ti,bq25618
+ - ti,bq25619
+
+ reg:
+ maxItems: 1
+
+ ti,watchdog-timer:
Poorly named since we have 'ti,watchdog-timers' already and is
completely different.
ACK, will use ti,watchdog-timeout-ms instead
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: |
+ Watchdog timer in milli seconds. 0 (default) disables the watchdog
If you have units, then you should use standard unit suffix.
ACK
+ minimum: 0
+ maximum: 160000
+ enum: [ 0, 40000, 80000, 160000]
+
+ input-voltage-limit-microvolt:
+ description: |
+ Minimum input voltage limit in micro volts with a 100000 micro volt step
+ minimum: 3900000
+ maximum: 5400000
+
+ input-current-limit-microamp:
+ description: |
+ Maximum input current limit in micro amps with a 100000 micro amp step
+ minimum: 100000
+ maximum: 3200000
Aren't these properties of the battery, not the charger?
These are input current and voltage limit for the charger, not the battery
+
+required:
+ - compatible
+ - reg
monitored-battery not required?
ACK
Add:
additionalProperties: false
additionalProperties: false or unevaluatedProperties: false
+
+examples:
+ - |
+ bat: battery {
+ compatible = "simple-battery";
+ constant-charge-current-max-microamp = <2040000>;
+ constant-charge-voltage-max-microvolt = <4352000>;
+ precharge-current-microamp = <180000>;
+ termination-current-microamp = <180000>;
+ };
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c0 {
i2c {
ACK
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_pins>;
Not relevant to the example.
ACK
+
+ status = "okay";
Don't show status in examples.
ACK
+ clock-frequency = <400000>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ bq25601@6b {
charger@6b
ACK
+ compatible = "ti,bq25601";
+ reg = <0x6b>;
+ monitored-battery = <&bat>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
+ watchdog-timer = <40000>;
+
+ input-voltage-limit-microvolt = <4500000>;
+ input-current-limit-microamp = <2400000>;
+ };
+ };
+...
--
2.28.0
Ricardo
