[PATCH v5 1/6] dt-bindings: usb: musb: Add support for MediaTek musb controller

min.guo
2019-02-19T07:36:30Z

This adds support for MediaTek musb controller in
host, peripheral and otg mode.

Signed-off-by: Min Guo <min.guo@mediatek.com>
---
changes in v5:
suggested by Rob:
1. Modify compatible as
- compatible : should be one of:
"mediatek,mt-2701"
...
followed by "mediatek,mtk-musb"
2. Add usb connector child node

changes in v4:
suggested by Sergei:
1. String alignment

changes in v3:
1. no changes

changes in v2:
suggested by Bin:
1. Modify DRC to DRD
suggested by Rob:
2. Drop the "<soc-model>-musb" in compatible
3. Remove phy-names
4. Add space after comma in clock-names
---
.../devicetree/bindings/usb/mediatek,musb.txt | 54 ++++++++++++++++++++++
1 file changed, 54 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/mediatek,musb.txt

diff --git a/Documentation/devicetree/bindings/usb/mediatek,musb.txt b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
new file mode 100644
index 0000000..0632e6e
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
@@ -0,0 +1,54 @@
+MediaTek musb DRD/OTG controller
+-------------------------------------------
+
+Required properties:
+ - compatible : should be one of:
+ "mediatek,mt-2701"
+ ...
+ followed by "mediatek,mtk-musb"
+ - reg : specifies physical base address and size of
+ the registers
+ - interrupts : interrupt used by musb controller
+ - interrupt-names : must be "mc"
+ - phys : PHY specifier for the OTG phy
+ - dr_mode : should be one of "host", "peripheral" or "otg",
+ refer to usb/generic.txt
+ - clocks : a list of phandle + clock-specifier pairs, one for
+ each entry in clock-names
+ - clock-names : must contain "main", "mcu", "univpll"
+ for clocks of controller
+
+Optional properties:
+ - power-domains : a phandle to USB power domain node to control USB's
+ MTCMOS
+
+Required child nodes:
+ usb connector node as defined in bindings/connector/usb-connector.txt
+ - extcon : for VBUS and ID pin changes detection, needed when
+ supports dual-role mode
+ - vbus-supply : reference to the VBUS regulator, needed when supports
+ dual-role mode
+
+Example:
+
+usb2: usb@11200000 {
+ compatible = "mediatek,mt2701-musb",
+ "mediatek,mtk-musb";
+ reg = <0 0x11200000 0 0x1000>;
+ interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-names = "mc";
+ phys = <&u2port2 PHY_TYPE_USB2>;
+ dr_mode = "otg";
+ clocks = <&pericfg CLK_PERI_USB0>,
+ <&pericfg CLK_PERI_USB0_MCU>,
+ <&pericfg CLK_PERI_USB_SLV>;
+ clock-names = "main","mcu","univpll";
+ power-domains = <&scpsys MT2701_POWER_DOMAIN_IFR_MSC>;
+ usb_con: connector{
+ compatible = "usb-b-connector";
+ label = "micro-USB";
+ type = "micro";
+ extcon = <&extcon_usb>;
+ vbus-supply = <&usb_vbus>;
+ };
+};
--
1.9.1