Re: [PATCH v4 2/2] dt-bindings: net: bluetooth: Add device tree bindings for QTI chip WCN3998

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Hi Matthias,

On 2019-03-25 21:59, Matthias Kaehlcke wrote:
On Mon, Mar 25, 2019 at 05:06:40PM +0530, Harish Bandi wrote:
This patch enables regulators for the Qualcomm Bluetooth WCN3998
controller.

Signed-off-by: Harish Bandi <c-hbandi@xxxxxxxxxxxxxx>
---
Changes in V4:
- Removed new compatible WCN3998
- changed wcn3990 to wcn399* to represent wcn399* family
---
Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
index 824c0e2..de9cefa 100644
--- a/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
+++ b/Documentation/devicetree/bindings/net/qualcomm-bluetooth.txt
@@ -11,20 +11,21 @@ Required properties:
  - compatible: should contain one of the following:
    * "qcom,qca6174-bt"
    * "qcom,wcn3990-bt"
+   * "qcom,wcn3998-bt"

 Optional properties for compatible string qcom,qca6174-bt:

  - enable-gpios: gpio specifier used to enable chip
  - clocks: clock provided to the controller (SUSCLK_32KHZ)

-Required properties for compatible string qcom,wcn3990-bt:
+Required properties for compatible string qcom,wcn399*-bt:

I think in Linux drivers the use of 'x' is more common as a wildcard
for a single letter than an asterisk. It is also in line with the
function name in the driver, so I would suggest to keep thinkgs
consistent and call it wcn399x everywhere.

[Harish] - ok, will change it to wcn399x


  - vddio-supply: VDD_IO supply regulator handle.
  - vddxo-supply: VDD_XO supply regulator handle.
  - vddrf-supply: VDD_RF supply regulator handle.
  - vddch0-supply: VDD_CH0 supply regulator handle.

-Optional properties for compatible string qcom,wcn3990-bt:
+Optional properties for compatible string qcom,wcn399*-bt:

- max-speed: see Documentation/devicetree/bindings/serial/slave-device.txt

@@ -44,7 +45,7 @@ serial@7570000 {

 serial@898000 {
 	bluetooth {
-		compatible = "qcom,wcn3990-bt";
+		compatible = "qcom,wcn399*-bt";

Typically wildcards aren't used in DT examples as Marcel already
mentioned on v3. IMO the wildcard degrades the value of the example,
rather than enhancing it. I think just listing the compatible string
is enough, no need for an wcn3998/x specific example since it's
essentialy the same as wcn3990.
[Harish] - So will keep as wcn3990 only here.

Thanks

Matthias



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