On 31.08.2020 14:50, Marek Szyprowski wrote:
Hi Krzysztof,
On 29.08.2020 16:25, Krzysztof Kozlowski wrote:
The USB-C connector bindings require port@0. Such port was already described in DTS but outside of the connector itself. Put it into proper place to fix dtbs_check warnings like:
arch/arm64/boot/dts/exynos/exynos5433-tm2.dt.yaml: musb_connector: ports: 'port@0' is a required propertySigned-off-by: Krzysztof Kozlowski krzk@kernel.org
I'm not sure if topic should be about USB-C, I will call it simply USB connector node. TM2(e) uses Samsung's 11-pin micro USB 2.0 connector, which has nothing in common with USB Type-C.
Anyway, this patch breaks DWC3 (tested in Device mode) driver operation, so something has to be somehow adjusted or fixed. Added CC Andrzej Hajda, who actually worked on this.
Not tested on HQ. Please kindly review and test.
Best regards, Krzysztof
.../boot/dts/exynos/exynos5433-tm2-common.dtsi | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi index 6246cce2a15e..bab6c1addd5f 100644 --- a/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi +++ b/arch/arm64/boot/dts/exynos/exynos5433-tm2-common.dtsi @@ -871,6 +871,13 @@ #address-cells = <1>; #size-cells = <0>;
port@0 {reg = <0>;muic_to_usb: endpoint {remote-endpoint = <&usb_to_muic>;};};
According to not-yet-yaml documentation of dt-bindings (patch 05/10):
-Required nodes: -- any data bus to the connector should be modeled using the OF graph bindings
- specified in bindings/graph.txt, unless the bus is between parent node and
- the connector.
This is 'unless' case - muic is parent of the connector, so the port 0 is not necessary.
port@3 { reg = <3>; musb_con_to_mhl: endpoint {@@ -879,14 +886,6 @@ }; }; };
ports {port {muic_to_usb: endpoint {remote-endpoint = <&usb_to_muic>;};};
And this port belongs to MUIC - it describes connection between USB-HOST and MUIC, it has nothing to do with the connector, and is necessary.
Regards
Andrzej
}; }; regulators {Best regards