Hi Matthias,
On 2018-08-02 22:50, Matthias Kaehlcke wrote:
On Thu, Aug 02, 2018 at 06:55:12PM +0530, Balakrishna Godavarthi wrote:
This patch enables regulators for the Qualcomm Bluetooth wcn3990
controller.
Signed-off-by: Balakrishna Godavarthi <bgodavar@xxxxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
.../bindings/net/qualcomm-bluetooth.txt | 26
+++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff --git
a/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
index 0ea18a53cc29..2175174415ee 100644
--- a/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
+++ b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
@@ -10,12 +10,22 @@ device the slave device is attached to.
Required properties:
- compatible: should contain one of the following:
* "qcom,qca6174-bt"
+ * "qcom,wcn3990-bt"
+
+Optional properties for compatible string qcom,qca6174-bt:
-Optional properties:
- enable-gpios: gpio specifier used to enable chip
- clocks: clock provided to the controller (SUSCLK_32KHZ)
-Example:
+Optional properties for compatible string qcom,wcn3990-bt:
+
+ - vddio-supply: Bluetooth wcn3990 VDD_IO supply regulator handle.
+ - vddxo-supply: Bluetooth wcn3990 VDD_XO supply regulator handle.
+ - vddrf-supply: Bluetooth wcn3990 VDD_RF supply regulator handle.
+ - vddch0-supply: Bluetooth wcn3990 VDD_CH0 supply regulator handle.
Are these really optional? If I understand correctly the driver
expects the regulators to be there. Even if it could do with only some
regulators specified the devm_regulator_bulk_get() call would fail if
not all requested regulators are available.
yes they are required along with compatible string "qcom,wcn3990-bt".
i have taken reference wrt compatible string "qcom,qca6174-bt".
In which clocks and enable-gpios are required for driver to work, but it
was written as optional in doc.
below snippet from hci_qca.c for qcom,qca6174-bt.
if (IS_ERR(qcadev->bt_en)) {
dev_err(&serdev->dev, "failed to acquire enable gpio\n");
return PTR_ERR(qcadev->bt_en);
}
qcadev->susclk = devm_clk_get(&serdev->dev, NULL);
if (IS_ERR(qcadev->susclk)) {
dev_err(&serdev->dev, "failed to acquire clk\n");
return PTR_ERR(qcadev->susclk);
}
--
Regards
Balakrishna.
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