G'day Rob,
On 24/09/2016 03:44, Rob Herring wrote:
On Wed, Sep 21, 2016 at 04:41:11PM +0800, Phil Reid wrote:
From: Karl-Heinz Schneider <karl-heinz@xxxxxxxxxxxxxxxxx>
This patch adds device tree documentation for the sbs-manager
Reviewed-by: Phil Reid <preid@xxxxxxxxxxxxxxxxx>
Signed-off-by: Karl-Heinz Schneider <karl-heinz@xxxxxxxxxxxxxxxxx>
Signed-off-by: Phil Reid <preid@xxxxxxxxxxxxxxxxx>
---
.../bindings/power/supply/sbs,sbs-manager.txt | 62 ++++++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt
diff --git a/Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt b/Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt
new file mode 100644
index 0000000..2a04b30
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/supply/sbs,sbs-manager.txt
@@ -0,0 +1,62 @@
+Binding for sbs-manager
+
+Required properties:
+- compatible: should be "lltc,ltc1760" or use "sbs,sbs-manager" as fallback.
+- reg: integer, i2c address of the device. Should be <0xa>.
+Optional properties:
+- gpio-controller: Marks the port as GPIO controller.
+ See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt.
+- #gpio-cells: Should be <2>. The first cell is the pin number, the second cell
+ is used to specify optional parameters:
+ See "gpio-specifier" in .../devicetree/bindings/gpio/gpio.txt.
Is this leftover from the last version? It doesn't look like you are
using any GPIOs in the example.
Sorry didn't update the example. I still need the gpio exposed to the battery.
+
+From OS view the device is basically an i2c-mux used to communicate with up to
+four smart battery devices at address 0xb. The driver actually implements this
+behaviour. So standard i2c-mux nodes can be used to register up to four slave
+batteries. See Documentation/devicetree/bindings/i2c/i2c-mux.txt for more
+information on i2c-mux nodes. Channels will be numerated starting from 1 to 4.
+
+Example:
+
+batman@0a {
+ compatible = "lltc,ltc1760";
+ reg = <0x0a>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ i2c@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ battery@b {
+ compatible = "ti,bq2060", "sbs,sbs-battery";
+ reg = <0xb>;
should have something like:
sbs,battery-detect-gpios = <&batman 0 GPIO_ACTIVE_HIGH>;
+ };
+ };
+
+ i2c@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <2>;
+
+ battery@b {
+ compatible = "ti,bq2060", "sbs,sbs-battery";
+ reg = <0xb>;
+ };
+ };
+
+ i2c@3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <3>;
+
+ battery@b {
+ compatible = "ti,bq2060", "sbs,sbs-battery";
+ reg = <0xb>;
+ };
+ };
+};
--
Let me know your thoughts.
--
Regards
Phil Reid
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