Hi Heiko & Mark,
On 2016/6/6 20:33, Heiko Stübner wrote:
Am Montag, 6. Juni 2016, 12:27:54 schrieb Mark Rutland:
On Mon, Jun 06, 2016 at 05:20:03PM +0800, Frank Wang wrote:
Signed-off-by: Frank Wang <frank.wang@xxxxxxxxxxxxxx>
---
Changes in v3:
- Added 'clocks' and 'clock-names' optional properties.
- Specified 'otg-port' and 'host-port' as the sub-node name.
Changes in v2:
- Changed vbus_host optional property from gpio to regulator.
- Specified vbus_otg-supply optional property.
- Specified otg_id and otg_bvalid property.
.../bindings/phy/phy-rockchip-inno-usb2.txt | 60
++++++++++++++++++++ 1 file changed, 60 insertions(+)
create mode 100644
Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt>
diff --git
a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt new
file mode 100644
index 0000000..0b4bbbb
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
@@ -0,0 +1,60 @@
+ROCKCHIP USB2.0 PHY WITH INNO IP BLOCK
+
+Required properties (phy (parent) node):
+ - compatible : should be one of the listed compatibles:
+ * "rockchip,rk3366-usb2phy"
+ * "rockchip,rk3399-usb2phy"
+ - #clock-cells : should be 0.
+ - clock-output-names : specify the 480m output clock name.
+
+Optional properties:
+ - clocks : phandle + phy specifier pair, for the input clock of phy.
+ - clock-names : input clock name of phy, must be "phyclk".
+ - vbus_host-supply : phandle to a regulator that supplies host vbus.
+ - vbus_otg-supply : phandle to a regulator that supplies otg vbus.
Nit: s/_/-/ here.
Something I only stumbled over yesterday for the first time on my rk3288-
popmetal: The phy subnodes seem to be able to use a generic phy-supply
property from inside the phy-core itself, see:
https://github.com/mmind/linux-rockchip/commit/93739f521fc65f44524b00c9aaf6db46bca94e02#diff-ddf3e45ebb753d6debf57022003a1a57R597
for my WIP code for that other board.
Ah, good comments! I will try later, if it is practicable, I shall
correct it into the next patches (patch v4).
Otherwise the rest of this looks generally fine, though I'm confused as
to how you address the programming interface(s), given none are
described.
I think that comes generally down to phy_power_on and phy_power_off from the
host driver (ehci / dwc2 / whatever) using the generic phy interface. The usb2
phys on Rockchip SoCs seem always pretty easy to handle, while the new
additional typeC phy seems to require more work
Yeah, just like that.
+
+Required nodes : a sub-node is required for each port the phy provides.
+ The sub-node name is used to identify host or otg port,
+ and shall be the following entries:
+ * "otg-port" : the name of otg port.
+ * "host-port" : the name of host port.
+
+Required properties (port (child) node):
+ - #phy-cells : must be 0. See ./phy-bindings.txt for details.
+ - interrupts : specify an interrupt for each entry in interrupt-names.
+ - interrupt-names : a list which shall be the following entries:
+ * "otg_id" : for the otg id interrupt.
+ * "otg_bvalid" : for the otg vbus interrupt.
+ * "linestate" : for the host/otg linestate interrupt.
+
+Example:
+
+grf: syscon@ff770000 {
+ compatible = "rockchip,rk3366-grf", "syscon", "simple-mfd";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+...
+
+ u2phy: usb2-phy {
+ compatible = "rockchip,rk3366-usb2phy";
+ #clock-cells = <0>;
+ clock-output-names = "sclk_otgphy0_480m";
+
+ u2phy_otg: otg-port {
+ #phy-cells = <0>;
+ interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "otg_id", "otg_bvalid", "linestate";
+ status = "okay";
+ };
+
+ u2phy_host: host-port {
+ #phy-cells = <0>;
+ interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "linestate";
+ status = "okay";
+ };
+ };
+};
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