summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt84
1 files changed, 84 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt b/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt
new file mode 100644
index 000000000..b3b75c1e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.txt
@@ -0,0 +1,84 @@
+Qualcomm's USB HS PHY
+
+PROPERTIES
+
+- compatible:
+ Usage: required
+ Value type: <string>
+ Definition: Should contain "qcom,usb-hs-phy" and more specifically one of the
+ following:
+
+ "qcom,usb-hs-phy-apq8064"
+ "qcom,usb-hs-phy-msm8916"
+ "qcom,usb-hs-phy-msm8974"
+
+- #phy-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should contain 0
+
+- clocks:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Should contain clock specifier for the reference and sleep
+ clocks
+
+- clock-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain "ref" and "sleep" for the reference and sleep
+ clocks respectively
+
+- resets:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Should contain the phy and POR resets
+
+- reset-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain "phy" and "por" for the phy and POR resets
+ respectively
+
+- v3p3-supply:
+ Usage: required
+ Value type: <phandle>
+ Definition: Should contain a reference to the 3.3V supply
+
+- v1p8-supply:
+ Usage: required
+ Value type: <phandle>
+ Definition: Should contain a reference to the 1.8V supply
+
+- extcon:
+ Usage: optional
+ Value type: <prop-encoded-array>
+ Definition: Should contain the vbus extcon
+
+- qcom,init-seq:
+ Usage: optional
+ Value type: <u8 array>
+ Definition: Should contain a sequence of ULPI address and value pairs to
+ program into the ULPI_EXT_VENDOR_SPECIFIC area. This is related
+ to Device Mode Eye Diagram test. The addresses are offsets
+ from the ULPI_EXT_VENDOR_SPECIFIC address, for example,
+ <0x1 0x53> would mean "write the value 0x53 to address 0x81".
+
+EXAMPLE
+
+otg: usb-controller {
+ ulpi {
+ phy {
+ compatible = "qcom,usb-hs-phy-msm8974", "qcom,usb-hs-phy";
+ #phy-cells = <0>;
+ clocks = <&xo_board>, <&gcc GCC_USB2A_PHY_SLEEP_CLK>;
+ clock-names = "ref", "sleep";
+ resets = <&gcc GCC_USB2A_PHY_BCR>, <&otg 0>;
+ reset-names = "phy", "por";
+ v3p3-supply = <&pm8941_l24>;
+ v1p8-supply = <&pm8941_l6>;
+ extcon = <&smbb>;
+ qcom,init-seq = /bits/ 8 <0x1 0x63>;
+ };
+ };
+};