Qualcomm chipsets have QUSB2 phy controller that provides
HighSpeed functionality for DWC3 controller.
Adding dt binding information for the same.
Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
---
Changes since v2:
- Removed binding for "ref_clk_src" since we don't request this
clock in the driver.
- Addressed s/vdda-phy-dpdm/vdda-phy-dpdm-supply.
- Addressed s/ref_clk/ref. Don't need to add '_clk' suffix to clock names.
- Addressed s/tune2_hstx_trim_efuse/tune2_hstx_trim. Don't need to add
'efuse' suffix to nvmem cell.
- Addressed s/qusb2phy/phy for the node name.
Changes since v1:
- New patch, forked out of the original driver patch:
"phy: qcom-qusb2: New driver for QUSB2 PHY on Qcom chips"
- Updated dt bindings to remove 'hstx-trim-bit-offset' and
'hstx-trim-bit-len' bindings.
.../devicetree/bindings/phy/qcom-qusb2-phy.txt | 53 ++++++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
new file mode 100644
index 000000000000..594f2dcd12dd
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
@@ -0,0 +1,53 @@
+Qualcomm QUSB2 phy controller
+=============================
+
+QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
+
+Required properties:
+ - compatible: compatible list, contains "qcom,msm8996-qusb2-phy".
+ - reg: offset and length of the PHY register set.
+ - #phy-cells: must be 0.
+
+ - clocks: a list of phandles and clock-specifier pairs,
+ one for each entry in clock-names.
+ - clock-names: must be "cfg_ahb" for phy config clock,
+ "ref" for 19.2 MHz ref clk,
+ "iface" for phy interface clock (Optional).
+
+ - vdd-phy-supply: Phandle to a regulator supply to PHY core block.
+ - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
+ - vdda-phy-dpdm-supply: Phandle to 3.1V regulator supply to Dp/Dm port signals.
+
+ - resets: a list of phandles and reset controller specifier pairs,
+ one for each entry in reset-names.
+ - reset-names: must be "phy" for reset of phy block.
+
+Optional properties:
+ - nvmem-cells: a list of phandles to nvmem cells that contain fused
+ tuning parameters for qusb2 phy, one for each entry
+ in nvmem-cell-names.
+ - nvmem-cell-names: must be "tune2_hstx_trim" for cell containing
+ HS Tx trim value.
+
+ - qcom,tcsr-syscon: Phandle to TCSR syscon register region.
+
+Example:
+ hsusb_phy: phy@7411000 {
+ compatible = "qcom,msm8996-qusb2-phy";
+ reg = <0x07411000 0x180>;
+ #phy-cells = <0>;
+
+ clocks = <&gcc GCC_USB_PHY_CFG_AHB2PHY_CLK>,
+ <&gcc GCC_RX1_USB2_CLKREF_CLK>,
+ clock-names = "cfg_ahb", "ref";
+
+ vdd-phy-supply = <&pm8994_s2>;
+ vdda-pll-supply = <&pm8994_l12>;
+ vdda-phy-dpdm-supply = <&pm8994_l24>;
+
+ resets = <&gcc GCC_QUSB2PHY_PRIM_BCR>;
+ reset-names = "phy";
+
+ nvmem-cells = <&qusb2p_hstx_trim>;
+ nvmem-cell-names = "tune2_hstx_trim";
+ };
--
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