From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
The Renesas USB PHY hardware block needs to have the PWRRDY bit in the
system controller set before applying any other settings. The PWRRDY bit
must be controlled during power-on, power-off, and system suspend/resume
sequences as follows:
- during power-on/resume, it must be set to zero before enabling clocks and
modules
- during power-off/suspend, it must be set to one after disabling clocks
and modules
Add the renesas,sysc-pwrrdy device tree property, which allows the
reset-rzg2l-usbphy-ctrl driver to parse, map, and control the system
controller PWRRDY bit at the appropriate time. Along with it add a new
compatible for the RZ/G3S SoC.
Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
Tested-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
---
Changes in v6:
- collected tags
Changes in v5:
- fixed description formatting
- collected tags
Changes in v4:
- dropped blank line from compatible section
- s/renesas,sysc-signals/renesas,sysc-pwrrdy/g
- dropped description from renesas,sysc-pwrrdy
- updated description of renesas,sysc-pwrrdy items
- updated patch description
Changes in v3:
- none; this patch is new
.../reset/renesas,rzg2l-usbphy-ctrl.yaml | 41 ++++++++++++++++---
1 file changed, 35 insertions(+), 6 deletions(-)
diff --git a/Documentation/devicetree/bindings/reset/renesas,rzg2l-usbphy-ctrl.yaml b/Documentation/devicetree/bindings/reset/renesas,rzg2l-usbphy-ctrl.yaml
index b0b20af15313..c83469a1b379 100644
--- a/Documentation/devicetree/bindings/reset/renesas,rzg2l-usbphy-ctrl.yaml
+++ b/Documentation/devicetree/bindings/reset/renesas,rzg2l-usbphy-ctrl.yaml
@@ -15,12 +15,14 @@ description:
properties:
compatible:
- items:
- - enum:
- - renesas,r9a07g043-usbphy-ctrl # RZ/G2UL and RZ/Five
- - renesas,r9a07g044-usbphy-ctrl # RZ/G2{L,LC}
- - renesas,r9a07g054-usbphy-ctrl # RZ/V2L
- - const: renesas,rzg2l-usbphy-ctrl
+ oneOf:
+ - items:
+ - enum:
+ - renesas,r9a07g043-usbphy-ctrl # RZ/G2UL and RZ/Five
+ - renesas,r9a07g044-usbphy-ctrl # RZ/G2{L,LC}
+ - renesas,r9a07g054-usbphy-ctrl # RZ/V2L
+ - const: renesas,rzg2l-usbphy-ctrl
+ - const: renesas,r9a08g045-usbphy-ctrl # RZ/G3S
reg:
maxItems: 1
@@ -48,6 +50,20 @@ properties:
$ref: /schemas/regulator/regulator.yaml#
unevaluatedProperties: false
+ renesas,sysc-pwrrdy:
+ description:
+ The system controller PWRRDY indicates to the USB PHY if the power supply
+ is ready. PWRRDY needs to be set during power-on before applying any
+ other settings. It also needs to be set before powering off the USB.
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description:
+ System controller phandle required by USB PHY CTRL driver to set
+ PWRRDY
+ - description: Register offset associated with PWRRDY
+ - description: Register bitmask associated with PWRRDY
+
required:
- compatible
- reg
@@ -57,6 +73,19 @@ required:
- '#reset-cells'
- regulator-vbus
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: renesas,r9a08g045-usbphy-ctrl
+ then:
+ required:
+ - renesas,sysc-pwrrdy
+ else:
+ properties:
+ renesas,sysc-pwrrdy: false
+
additionalProperties: false
examples:
--
2.43.0
