linux-toradex.git/drivers/phy/rockchip, branch v4.19

phy: rockchip-typec: fall back to working in host-mode if extcon is missing.

2018-03-16T11:25:37+00:00

Right now the rockchip type-c phy does fail probing when no extcon is
detected. Some boards get the cable-state via the extcon interface and
have this supported, other boards seem to use the fusb302 chip or
another but the driver currently does not seem to utilize the extcon
interface to report the cable-state. And, other, just connect the type-c
to a standard USB-A port so use no controller at all. A missing extcon
shouldn't fail to probe, instead, should just fall back to working in
host-mode if it cannot get the extcon.

Fixes: c301b327aea898af ("arm64: dts: rockchip: add usb3-phy otg-port support for rk3399")
Reported-by: Vicente Bergas 
Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-typec: support DP phy switch

2018-03-16T11:25:35+00:00

There are 2 Type-c PHYs in RK3399, but only one DP controller. Hence
only one PHY can connect to DP controller at one time, the other should
be disconnected. The GRF_SOC_CON26 register has a switch bit to do it,
set this bit means enable PHY 1, clear this bit means enable PHY 0.

Signed-off-by: Chris Zhong 
Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-typec: force to USB2 if DP at 4 lanes mode

2018-03-16T11:25:34+00:00

The usb3tousb2_en BIT will be clear to 0 in probe(), it make USB
controller work at USB3 mode, and if the USB phy is turned on with DP
only mode(4 lanes DP), the rockchip_usb3_phy_power_on() will return
directly, so usb3_host_disable and usb3_host_port these 2 BIT will keep
a same value as coreboot. In coreboot, these 3 BITs are set as USB2
mode, but now one of the bits is changed to USB3, it make USB controller
work at a unknown status.

These 3 BITs should be changed to USB2, if the Type-C works at 4 lanes
mode, and then switch it back to USB3 mode, when USB disconnect.

Signed-off-by: Chris Zhong 
Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-typec: enable usb3 host during usb3 phy power on

2018-03-16T11:25:33+00:00

We have forced usb3 to work in usb2 only mode in firmware by setting
usb3tousb2_en (bit3 of GRF_USB3PHY0/1_CON0) to 1, and setting
host_u3_port_disable (bit0 of GRF_USB3OTG0/1_CON1) to 1 and host_u3_port
(bit15~12 of GRF_USB3OTG0/1_CON1) to 0. So we need to re-enable usb3
host.

Note that the RK3399 TRM suggests that we should keep the whole usb3
controller in reset for the duration of the Type-C PHY initialization.
However, it's hard to assert the reset in the current framework of
reset. And according to the TRM, it doesn't require that we should
clear the usb3tousb2 bit before pipe ready. So let's enable the usb3
host after pipe ready to avoid the Type-C PHY initialization failure.

Signed-off-by: William wu 
Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-typec: deprecate some DT properties for various register fields.

2018-03-16T11:25:31+00:00

Adding properties for various register fields in the DT doesn't scale and
this information should be in the driver instead.

Before this patch these registers (description below) were specified in
the DT, every register node contained 3 sections: offset, enable bit,
write mask bit.

 - rockchip,typec-conn-dir : the register of type-c connector direction,
   for type-c phy0, it must be <0xe580 0 16>;
   for type-c phy1, it must be <0xe58c 0 16>;
 - rockchip,usb3tousb2-en : the register of type-c force usb3 to usb2
   enable control.
   for type-c phy0, it must be <0xe580 3 19>;
   for type-c phy1, it must be <0xe58c 3 19>;
 - rockchip,external-psm : the register of type-c phy external psm clock
   selection.
   for type-c phy0, it must be <0xe588 14 30>;
   for type-c phy1, it must be <0xe594 14 30>;
 - rockchip,pipe-status : the register of type-c phy pipe status.
   for type-c phy0, it must be <0xe5c0 0 0>;
   for type-c phy1, it must be <0xe5c0 16 16>;

After this patch these register definitions are in the driver. So can be
removed from the DT. Note that there are 2 type-c phys for RK3399 with
different offsets, the driver checks the phy base address of the running
instance and applies the right offsets.

Signed-off-by: Enric Balletbo i Serra 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Kishon Vijay Abraham I

phy: add 'depends on HAS_IOMEM' to fix unmet dependency

2018-03-16T08:10:45+00:00

These configs select MFD_SYSCON, but do not depend on HAS_IOMEM.

Compile testing on architecture without HAS_IOMEM causes "unmet
direct dependencies" in Kconfig phase.

Detected by "make ARCH=score allyesconfig".

Signed-off-by: Masahiro Yamada 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-emmc: use regmap_read_poll_timeout to poll dllrdy

2018-03-08T08:26:23+00:00

Just use the API instead of open-coding it, no functional change
intended.

Signed-off-by: Shawn Lin 
Reviewed-by: Brian Norris 
Signed-off-by: Caesar Wang 
Reviewed-by: Douglas Anderson 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-emmc: retry calpad busy trimming

2018-03-08T08:26:22+00:00

It turns out that 5us isn't enough for all cases, so let's
retry some more times to wait for caldone.

Signed-off-by: Shawn Lin 
Tested-by: Ziyuan Xu 
Signed-off-by: Caesar Wang 
Reviewed-by: Douglas Anderson 
Signed-off-by: Kishon Vijay Abraham I

phy: rockchip-typec: add pm_runtime_disable in err case

2017-12-15T10:30:40+00:00

Add pm_runtime_disable in err case to make the pm_runtime_enable/disable
is invoked balanced.

Signed-off-by: Chris Zhong 
Reviewed-by: Brian Norris 
Reviewed-by: Douglas Anderson 
Signed-off-by: Kishon Vijay Abraham I

Merge tag 'usb-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2017-11-14T05:14:07+00:00

Pull USB/PHY updates from Greg KH:
 "Here is the big set of USB and PHY driver updates for 4.15-rc1.

  There is the usual amount of gadget and xhci driver updates, along
  with phy and chipidea enhancements. There's also a lot of SPDX tags
  and license boilerplate cleanups as well, which provide some churn in
  the diffstat.

  Other major thing is the typec code that moved out of staging and into
  the "real" part of the drivers/usb/ tree, which was nice to see
  happen.

  All of these have been in linux-next with no reported issues for a
  while"

* tag 'usb-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (263 commits)
  usb: gadget: f_fs: Fix use-after-free in ffs_free_inst
  USB: usbfs: compute urb->actual_length for isochronous
  usb: core: message: remember to reset 'ret' to 0 when necessary
  USB: typec: Remove remaining redundant license text
  USB: typec: add SPDX identifiers to some files
  USB: renesas_usbhs: rcar?.h: add SPDX tags
  USB: chipidea: ci_hdrc_tegra.c: add SPDX line
  USB: host: xhci-debugfs: add SPDX lines
  USB: add SPDX identifiers to all remaining Makefiles
  usb: host: isp1362-hcd: remove a couple of redundant assignments
  USB: adutux: remove redundant variable minor
  usb: core: add a new usb_get_ptm_status() helper
  usb: core: add a 'type' parameter to usb_get_status()
  usb: core: introduce a new usb_get_std_status() helper
  usb: core: rename usb_get_status() 'type' argument to 'recip'
  usb: core: add Status Type definitions
  USB: gadget: Remove redundant license text
  USB: gadget: function: Remove redundant license text
  USB: gadget: udc: Remove redundant license text
  USB: gadget: legacy: Remove redundant license text
  ...