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Commit 72e45b07 authored by Pratham Pratap's avatar Pratham Pratap Committed by Gerrit - the friendly Code Review server
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usb: phy: Add snapshot of USB QUSB PHY driver 



This change adds USB QUSB PHY driver used on QTI
MSM platforms. This snapshot is taken as of msm-4.9
commit <f82ab04ca457> ("Merge "qseecom: fix a race
condition when loading TA"").

Change-Id: I4931bb022b7a921da0feae45988e3d01240965aa
Signed-off-by: default avatarPratham Pratap <prathampratap@codeaurora.org>
parent b93572a7

Documentation/devicetree/bindings/usb/qcom,msm-phy.txt

+90 −0
Original line number Original line Diff line number Diff line
@@ -138,3 +138,93 @@ Example: 
				"phy_phy_reset";

				"phy_phy_reset";





	};

	};



QUSB2 High-Speed PHY



Required properties:

 - compatible: Should be "qcom,qusb2phy" or "qcom,qusb2phy-v2"

 - reg: Address and length of the QUSB2 PHY register set

 - reg-names: Should be "qusb_phy_base".

 - <supply-name>-supply: phandle to the regulator device tree node

   Required supplies are:

	"vdd" : vdd supply for digital circuit operation

	"vdda18" : 1.8v high-voltage analog supply

	"vdda33" : 3.3v high-voltage analog supply

 - clocks: a list of phandles to the PHY clocks. Use as per

   Documentation/devicetree/bindings/clock/clock-bindings.txt

 - clock-names: Names of the clocks in 1-1 correspondence with the "clocks"

   property. "ref_clk_src" is a mandatory clock.

 - qcom,vdd-voltage-level: This property must be a list of three integer

   values (no, min, max) where each value represents either a voltage in

   microvolts or a value corresponding to voltage corner

 - phy_type: Should be one of "ulpi" or "utmi". ChipIdea core uses "ulpi" mode.

 - resets: reset specifier pair consists of phandle for the reset controller

   and reset lines used by this controller.

 - reset-names: reset signal name strings sorted in the same order as the resets

   property.

 - qcom,qusb-phy-reg-offset: Provides important phy register offsets in an order defined in phy driver.



Optional properties:

 - reg-names: Additional registers corresponding with the following:

   "efuse_addr": EFUSE address to read and update analog tune parameter.

   "emu_phy_base" : phy base address used for programming emulation target phy.

   "ref_clk_addr" : ref_clk bcr address used for on/off ref_clk before reset.

   "tcsr_clamp_dig_n" : To enable/disable digital clamp to the phy. When

   de-asserted, it will prevent random leakage from qusb2 phy resulting from

   out of sequence turn on/off of 1p8, 3p3 and DVDD regulators.

   "refgen_north_bg_reg" : address used to read REFGEN status for overriding QUSB PHY register.

 - clocks: a list of phandles to the PHY clocks. Use as per

   Documentation/devicetree/bindings/clock/clock-bindings.txt

 - clock-names: Names of the clocks in 1-1 correspondence with the "clocks"

   property. "cfg_ahb_clk" and "ref_clk" are optional clocks.

 - qcom,qusb-phy-init-seq: QUSB PHY initialization sequence with value,reg pair.

 - qcom,qusb-phy-host-init-seq: QUSB PHY initialization sequence for host mode

   with value,reg pair.

 - qcom,emu-init-seq : emulation initialization sequence with value,reg pair.

 - qcom,phy-pll-reset-seq : emulation PLL reset sequence with value,reg pair.

 - qcom,emu-dcm-reset-seq : emulation DCM reset sequence with value,reg pair.

 - qcom,efuse-bit-pos: start bit position within EFUSE register

 - qcom,efuse-num-bits: Number of bits to read from EFUSE register

 - qcom,emulation: Indicates that we are running on emulation platform.

 - qcom,hold-reset: Indicates that hold QUSB PHY into reset state.

 - qcom,phy-clk-scheme: Should be one of "cml" or "cmos" if ref_clk_addr is provided.

 - qcom,major-rev: provide major revision number to differentiate power up sequence. default is 2.0

 - pinctrl-names/pinctrl-0/1: The GPIOs configured as output function. Names represents "active"

   state when attached in host mode and "suspend" state when detached.

 - qcom,tune2-efuse-correction: The value to be adjusted from fused value for

   improved rise/fall times.

 - qcom,host-chirp-erratum: Indicates host chirp fix is required.

 - qcom,override-bias-ctrl2: Indicates override is done from driver for

   BIAS_CTRL2 register.

 - nvmem-cells: specifies the handle to represent the SoC revision.

   usually it is defined by qfprom device node.

 - nvmem-cell-names: specifies the given nvmem cell name as defined in

   qfprom node.



Example:

	qusb_phy: qusb@f9b39000 {

		compatible = "qcom,qusb2phy";

		reg = <0x00079000 0x7000>;

		reg-names = "qusb_phy_base";

		vdd-supply = <&pm8994_s2_corner>;

		vdda18-supply = <&pm8994_l6>;

		vdda33-supply = <&pm8994_l24>;

		qcom,vdd-voltage-level = <1 5 7>;

		qcom,qusb-phy-reg-offset =

			<0x240 /* QUSB2PHY_PORT_TUNE1 */

			 0x1a0 /* QUSB2PHY_PLL_COMMON_STATUS_ONE */

			 0x210 /* QUSB2PHY_PWR_CTRL1 */

			 0x230 /* QUSB2PHY_INTR_CTRL */

			 0x0a8 /* QUSB2PHY_PLL_CORE_INPUT_OVERRIDE */

			 0x254 /* QUSB2PHY_TEST1 */

			 0x198>; /* QUSB2PHY_PLL_BIAS_CONTROL_2 */

		qcom,efuse-bit-pos = <21>;

		qcom,efuse-num-bits = <3>;



		clocks = <&clock_rpm clk_ln_bb_clk>,

			 <&clock_gcc clk_gcc_rx2_usb1_clkref_clk>,

			 <&clock_gcc clk_gcc_usb_phy_cfg_ahb2phy_clk>;

		clock-names = "ref_clk_src", "ref_clk", "cfg_ahb_clk";

		resets = <&clock_gcc GCC_QUSB2PHY_PRIM_BCR>;

		reset-names = "phy_reset";

	};

drivers/usb/phy/Kconfig

+10 −0
Original line number Original line Diff line number Diff line
@@ -216,6 +216,16 @@ config USB_MSM_SSPHY_QMP 
	  set for its control sequences, normally paired with newer DWC3-based

	  set for its control sequences, normally paired with newer DWC3-based

	  SuperSpeed controllers.

	  SuperSpeed controllers.





config MSM_QUSB_PHY

	tristate "MSM QUSB2 PHY Driver"

	depends on ARCH_QCOM

	select USB_PHY

	help

	  Enable this to support the QUSB2 PHY on MSM chips. This driver supports

	  the high-speed PHY which is usually paired with either the ChipIdea or

	  Synopsys DWC3 USB IPs on MSM SOCs. This driver expects to configure the

	  PHY with a dedicated register I/O memory region.



config MSM_HSUSB_PHY

config MSM_HSUSB_PHY

	tristate "MSM HSUSB PHY Driver"

	tristate "MSM HSUSB PHY Driver"

	depends on ARCH_QCOM

	depends on ARCH_QCOM

drivers/usb/phy/Makefile

+1 −0
Original line number Original line Diff line number Diff line
@@ -31,5 +31,6 @@ obj-$(CONFIG_USB_ULPI) += phy-ulpi.o 
obj-$(CONFIG_USB_ULPI_VIEWPORT)		+= phy-ulpi-viewport.o

obj-$(CONFIG_USB_ULPI_VIEWPORT)		+= phy-ulpi-viewport.o

obj-$(CONFIG_KEYSTONE_USB_PHY)		+= phy-keystone.o

obj-$(CONFIG_KEYSTONE_USB_PHY)		+= phy-keystone.o

obj-$(CONFIG_USB_MSM_SSPHY_QMP)     	+= phy-msm-ssusb-qmp.o

obj-$(CONFIG_USB_MSM_SSPHY_QMP)     	+= phy-msm-ssusb-qmp.o

obj-$(CONFIG_MSM_QUSB_PHY)		+= phy-msm-qusb.o

obj-$(CONFIG_MSM_HSUSB_PHY)		+= phy-msm-snps-hs.o

obj-$(CONFIG_MSM_HSUSB_PHY)		+= phy-msm-snps-hs.o

obj-$(CONFIG_MSM_SNPS_FEMTO_PHY)	+= phy-qcom-snps-28nm-hs.o
 
obj-$(CONFIG_MSM_SNPS_FEMTO_PHY)	+= phy-qcom-snps-28nm-hs.o