Thread (47 messages) 47 messages, 5 authors, 2022-11-24

Re: [PATCH v2 2/7] dt-bindings: clock: renesas,r9a06g032-sysctrl: Add h2mode property

From: Krzysztof Kozlowski <hidden>
Date: 2022-11-15 13:08:09
Also in: linux-clk, linux-renesas-soc, linux-usb, lkml

On 15/11/2022 14:05, Krzysztof Kozlowski wrote:
On 14/11/2022 12:15, Herve Codina wrote:
quoted
Add the h2mode property to force the USBs mode ie:
 - 2 hosts
or
 - 1 host and 1 device

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
---
 .../bindings/clock/renesas,r9a06g032-sysctrl.yaml      | 10 ++++++++++
 1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
index 95bf485c6cec..f9e0a58aa4fb 100644
--- a/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
+++ b/Documentation/devicetree/bindings/clock/renesas,r9a06g032-sysctrl.yaml
@@ -39,6 +39,16 @@ properties:
   '#power-domain-cells':
     const: 0
 
+  renesas,h2mode:
+    description: |
+      Configure the USBs mode.
+        - <0> : the USBs are in 1 host and 1 device mode.
+        - <1> : the USBs are in 2 host mode.
+      If the property is not present, the value used is the one already present
+      in the CFG_USB register (from reset or set by the bootloader).
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
0/1 are quite cryptic. Why not making it a string which is easy to read
and understand? Can be something like "two-hosts" and "one-host". Or
anything you find more readable...
...but actually you should rather make it a property of your USB
controller, not clock controller. You have two controllers and we have a
generic property for them - dr_mode.

Best regards,
Krzysztof
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