diff options
| -rw-r--r-- | Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt | 23 | ||||
| -rw-r--r-- | include/dt-bindings/phy/phy-qcom-qusb2.h | 37 |
2 files changed, 59 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt index 42c97426836e..03025d97998b 100644 --- a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt +++ b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt @@ -6,7 +6,7 @@ QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets. Required properties: - compatible: compatible list, contains "qcom,msm8996-qusb2-phy" for 14nm PHY on msm8996, - "qcom,qusb2-v2-phy" for QUSB2 V2 PHY. + "qcom,sdm845-qusb2-phy" for 10nm PHY on sdm845. - reg: offset and length of the PHY register set. - #phy-cells: must be 0. @@ -27,6 +27,27 @@ Optional properties: tuning parameter value for qusb2 phy. - qcom,tcsr-syscon: Phandle to TCSR syscon register region. + - qcom,imp-res-offset-value: It is a 6 bit value that specifies offset to be + added to PHY refgen RESCODE via IMP_CTRL1 register. It is a PHY + tuning parameter that may vary for different boards of same SOC. + This property is applicable to only QUSB2 v2 PHY (sdm845). + - qcom,hstx-trim-value: It is a 4 bit value that specifies tuning for HSTX + output current. + Possible range is - 15mA to 24mA (stepsize of 600 uA). + See dt-bindings/phy/phy-qcom-qusb2.h for applicable values. + This property is applicable to only QUSB2 v2 PHY (sdm845). + Default value is 22.2mA for sdm845. + - qcom,preemphasis-level: It is a 2 bit value that specifies pre-emphasis level. + Possible range is 0 to 15% (stepsize of 5%). + See dt-bindings/phy/phy-qcom-qusb2.h for applicable values. + This property is applicable to only QUSB2 v2 PHY (sdm845). + Default value is 10% for sdm845. +- qcom,preemphasis-width: It is a 1 bit value that specifies how long the HSTX + pre-emphasis (specified using qcom,preemphasis-level) must be in + effect. Duration could be half-bit of full-bit. + See dt-bindings/phy/phy-qcom-qusb2.h for applicable values. + This property is applicable to only QUSB2 v2 PHY (sdm845). + Default value is full-bit width for sdm845. Example: hsusb_phy: phy@7411000 { diff --git a/include/dt-bindings/phy/phy-qcom-qusb2.h b/include/dt-bindings/phy/phy-qcom-qusb2.h new file mode 100644 index 000000000000..5c5e4d800cac --- /dev/null +++ b/include/dt-bindings/phy/phy-qcom-qusb2.h @@ -0,0 +1,37 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#ifndef _DT_BINDINGS_QCOM_PHY_QUSB2_H_ +#define _DT_BINDINGS_QCOM_PHY_QUSB2_H_ + +/* PHY HSTX TRIM bit values (24mA to 15mA) */ +#define QUSB2_V2_HSTX_TRIM_24_0_MA 0x0 +#define QUSB2_V2_HSTX_TRIM_23_4_MA 0x1 +#define QUSB2_V2_HSTX_TRIM_22_8_MA 0x2 +#define QUSB2_V2_HSTX_TRIM_22_2_MA 0x3 +#define QUSB2_V2_HSTX_TRIM_21_6_MA 0x4 +#define QUSB2_V2_HSTX_TRIM_21_0_MA 0x5 +#define QUSB2_V2_HSTX_TRIM_20_4_MA 0x6 +#define QUSB2_V2_HSTX_TRIM_19_8_MA 0x7 +#define QUSB2_V2_HSTX_TRIM_19_2_MA 0x8 +#define QUSB2_V2_HSTX_TRIM_18_6_MA 0x9 +#define QUSB2_V2_HSTX_TRIM_18_0_MA 0xa +#define QUSB2_V2_HSTX_TRIM_17_4_MA 0xb +#define QUSB2_V2_HSTX_TRIM_16_8_MA 0xc +#define QUSB2_V2_HSTX_TRIM_16_2_MA 0xd +#define QUSB2_V2_HSTX_TRIM_15_6_MA 0xe +#define QUSB2_V2_HSTX_TRIM_15_0_MA 0xf + +/* PHY PREEMPHASIS bit values */ +#define QUSB2_V2_PREEMPHASIS_NONE 0 +#define QUSB2_V2_PREEMPHASIS_5_PERCENT 1 +#define QUSB2_V2_PREEMPHASIS_10_PERCENT 2 +#define QUSB2_V2_PREEMPHASIS_15_PERCENT 3 + +/* PHY PREEMPHASIS-WIDTH bit values */ +#define QUSB2_V2_PREEMPHASIS_WIDTH_FULL_BIT 0 +#define QUSB2_V2_PREEMPHASIS_WIDTH_HALF_BIT 1 + +#endif |