linux.git/drivers/phy/qualcomm, branch v5.2-rc2

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2019-05-08T17:03:52+00:00

Pull USB/PHY updates from Greg KH:
 "Here is the big set of USB and PHY driver patches for 5.2-rc1

  There is the usual set of:

   - USB gadget updates

   - PHY driver updates and additions

   - USB serial driver updates and fixes

   - typec updates and new chips supported

   - mtu3 driver updates

   - xhci driver updates

   - other tiny driver updates

  Nothing really interesting, just constant forward progress.

  All of these have been in linux-next for a while with no reported
  issues. The usb-gadget and usb-serial trees were merged a bit "late",
  but both of them had been in linux-next before they got merged here
  last Friday"

* tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (206 commits)
  USB: serial: f81232: implement break control
  USB: serial: f81232: add high baud rate support
  USB: serial: f81232: clear overrun flag
  USB: serial: f81232: fix interrupt worker not stop
  usb: dwc3: Rename DWC3_DCTL_LPM_ERRATA
  usb: dwc3: Fix default lpm_nyet_threshold value
  usb: dwc3: debug: Print GET_STATUS(device) tracepoint
  usb: dwc3: Do core validation early on probe
  usb: dwc3: gadget: Set lpm_capable
  usb: gadget: atmel: tie wake lock to running clock
  usb: gadget: atmel: support USB suspend
  usb: gadget: atmel_usba_udc: simplify setting of interrupt-enabled mask
  dwc2: gadget: Fix completed transfer size calculation in DDMA
  usb: dwc2: Set lpm mode parameters depend on HW configuration
  usb: dwc2: Fix channel disable flow
  usb: dwc2: Set actual frame number for completed ISOC transfer
  usb: gadget: do not use __constant_cpu_to_le16
  usb: dwc2: gadget: Increase descriptors count for ISOC's
  usb: introduce usb_ep_type_string() function
  usb: dwc3: move synchronize_irq() out of the spinlock protected block
  ...

phy: qcom-qmp: Add msm8998 PCIe QMP PHY support

2019-04-17T08:43:20+00:00

Documentation for this PHY, and the proper configuration settings,
is *not* publicly available. Therefore the initialization sequence
is copied wholesale from downstream:

https://source.codeaurora.org/quic/la/kernel/msm-4.4/tree/arch/arm/boot/dts/qcom/msm8998-v2.dtsi?h=LE.UM.1.3.r3.25#n372

Reviewed-by: Vivek Gautam 
Signed-off-by: Marc Gonzalez 
Signed-off-by: Kishon Vijay Abraham I

phy: qcom-qusb2: get optional clock by devm_clk_get_optional()

2019-04-17T08:43:14+00:00

Use devm_clk_get_optional() to get optional clock

Cc: Andy Gross 
Cc: David Brown 
Cc: Vivek Gautam 
Signed-off-by: Chunfeng Yun 
Signed-off-by: Kishon Vijay Abraham I

phy: ufs-qcom: Refactor all init steps into phy_poweron

2019-04-17T08:42:57+00:00

The phy code was using implicit sequencing between the PHY driver
and the UFS driver to implement certain hardware requirements.
Specifically, the PHY reset register in the UFS controller needs
to be deasserted before serdes start occurs in the PHY.

Before this change, the code was doing this by utilizing the two
phy callbacks, phy_init() and phy_poweron(), as "init step 1" and
"init step 2", where the UFS driver would deassert reset between
these two steps.

This makes it challenging to power off the regulators in suspend,
as regulators are initialized in init, not in poweron(), but only
poweroff() is called during suspend, not exit().

For UFS, move the actual firing up of the PHY to phy_poweron() and
phy_poweroff() callbacks, rather than init()/exit(). UFS calls
phy_poweroff() during suspend, so now all clocks and regulators for
the phy can be powered down during suspend.

QMP is a little tricky because the PHY is also shared with PCIe and
USB3, which have their own definitions for init() and poweron(). Rename
the meaty functions to _enable() and _disable() to disentangle from the
PHY core names, and then create two different ops structures: one for
UFS and one for the other PHY types.

In phy-qcom-ufs, remove the 'is_powered_on' and 'is_started' guards,
as the generic PHY code does the reference counting. The
14/20nm-specific init functions get collapsed into the generic power_on()
function, with the addition of a calibrate() callback specific to 14/20nm.

Signed-off-by: Evan Green 
Reviewed-by: Stephen Boyd 
Signed-off-by: Kishon Vijay Abraham I

phy: qcom: Utilize UFS reset controller

2019-04-17T08:42:56+00:00

Move the PHY reset from ufs-qcom into the respective PHYs. This will
allow us to merge the two phases of UFS PHY initialization.

Signed-off-by: Evan Green 
Reviewed-by: Stephen Boyd 
Signed-off-by: Kishon Vijay Abraham I

phy: qcom-ufs: Make ufs_qcom_phy_disable_iface_clk static

2019-04-17T04:59:49+00:00

Fix sparse warning:

drivers/phy/qualcomm/phy-qcom-ufs.c:462:6:
 warning: symbol 'ufs_qcom_phy_disable_iface_clk' was not declared. Should it be static?

Signed-off-by: YueHaibing 
Signed-off-by: Kishon Vijay Abraham I

phy: qcom-qmp: Add QMP UFS PHY support for msm8998

2019-02-12T07:32:38+00:00

Use same init sequence as sdm845.

Reviewed-by: Jeffrey Hugo 
Signed-off-by: Marc Gonzalez 
Signed-off-by: Kishon Vijay Abraham I

phy: qcom-qusb2: Add QUSB2 PHY support for msm8998

2019-02-07T05:40:44+00:00

MSM8998 contains one QUSB2 PHY which is very similar to the existing
sdm845 support.

Signed-off-by: Jeffrey Hugo 
Signed-off-by: Kishon Vijay Abraham I

phy: qcom-qmp: Add QMP V3 USB3 PHY support for msm8998

2019-02-07T05:40:43+00:00

MSM8998 contains a single QMP v3 USB3 phy similar to the existing sdm845
support.

Signed-off-by: Jeffrey Hugo 
Signed-off-by: Kishon Vijay Abraham I