| Message ID | 20210721140424.725744-36-maxime@cerno.tech |
|---|---|
| State | Superseded |
| Headers | show |
| Series | None | expand |
Hi Rob, On Fri, Jul 23, 2021 at 04:15:30PM -0600, Rob Herring wrote: > On Wed, Jul 21, 2021 at 04:04:05PM +0200, Maxime Ripard wrote: > > The original binding was allowing any combination of usb2-phy and > > usb3-phy in the phys and phy-names properties. > > > > However, the current binding enforces that those properties must be a > > list of usb2-phy and usb3-phy, with exactly one element, effectively > > making usb2-phy the only value being valid. > > Huh? If 'maxItems' is not specified, then it's the length of 'items' > list. Even if minItems is set? This doesn't really change anything to my issue though. """ - phy-names: from the *Generic PHY* bindings; supported names are "usb2-phy" or "usb3-phy". """ The YAML binding has phy-names: minItems: 1 items: - const: usb2-phy - const: usb3-phy which means that only usb2-phy is accepted (and possibly usb2-phy, usb3-phy) but only usb3-phy isn't anymore, while it was valid according to the original binding and used in multiple DT across multiple vendors (arch/arm64/boot/dts/hisilicon/hi3660.dtsi, arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi) > > Let's rework the properties description to allow either one or two > > element picked with values either usb2-phy or usb3-phy. The rest of the > > tooling makes sure that we don't get any duplicate value, so this should > > be what we want. > > Is it really valid to have only a USB3 PHY and what you want here? That > would mean the USB3 phy also handles USB2, right? IIRC that's how it works for the H6 at least yes. Maxime
diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index 41416fbd92aa..6c3f7c9a76c0 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -73,15 +73,15 @@ properties: phys: minItems: 1 - items: - - description: USB2/HS PHY - - description: USB3/SS PHY + maxItems: 2 phy-names: minItems: 1 + maxItems: 2 items: - - const: usb2-phy - - const: usb3-phy + enum: + - usb2-phy + - usb3-phy resets: minItems: 1
The original binding was allowing any combination of usb2-phy and usb3-phy in the phys and phy-names properties. However, the current binding enforces that those properties must be a list of usb2-phy and usb3-phy, with exactly one element, effectively making usb2-phy the only value being valid. Let's rework the properties description to allow either one or two element picked with values either usb2-phy or usb3-phy. The rest of the tooling makes sure that we don't get any duplicate value, so this should be what we want. Cc: Felipe Balbi <balbi@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-usb@vger.kernel.org Signed-off-by: Maxime Ripard <maxime@cerno.tech> --- Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)