u-boot.git/drivers/phy/phy-uclass.c, branch v2023.07

phy: Keep balance of counts when ops is missing

2023-05-17T09:36:18+00:00

Reviewed-by: Kever Yang 
Fixes: 226fce6108fe ("phy: Track power-on and init counts in uclass")
Signed-off-by: Jonas Karlman

phy: add support for phy-supply

2023-05-17T09:36:18+00:00

Some phys require a phy-supply property that is a phandle to a regulator
that needs to be enabled for phy operations.
Implement basic supply lookup, enable and disabling, if DM_REGULATOR is
available.

Reviewed-by: Kever Yang 
[jonas@kwiboo.se:
use regulator_set_enable_if_allowed and disable if power_on ops fails]
Signed-off-by: Jonas Karlman 
Signed-off-by: Eugen Hristev

phy: Add .set_mode and .set_speed callbacks

2023-04-07T12:23:26+00:00

Add two new callbacks matching the Linux ones. The .set_mode is used to set
PHY mode and submode, where mode is either USB, Ethernet, and so on, while
submode is e.g. for Ethernet case RGMII, RMII, and so on. The .set_speed is
used to configure link speed into the PHY. Unlike the existing configure
callback, which is used to pass arbitrary custom information to the PHY,
these two callbacks are used to pass standardized set of information to
the PHY.

Signed-off-by: Marek Vasut 
Reviewed-by: Patrice Chotard

phy: Add generic_{setup,shutdown}_phy() helpers

2022-10-10T16:08:18+00:00

In drivers usb/host/{ehci,ohci}-generic.c, {ehci,ohci}_setup_phy() and
{ehci,ohci}_shutdown_phy() shares 95% of common code.
Factorize this code in new generic_{setup,shudown}_phy() functions.

Signed-off-by: Patrice Chotard 
Cc: Marek Vasut 
Cc: Simon Glass

phy: phy-uclass: check the parents for phys

2022-02-22T17:05:44+00:00

The port/hub leaf nodes don't contain the phy definitions in some dts
files so check the parents.

Signed-off-by: Angus Ainslie 
Reviewed-by: Simon Glass

phy: Track power-on and init counts in uclass

2022-01-14T19:36:57+00:00

On boards using the RK3399 SoC, the USB OHCI and EHCI controllers share
the same PHY device instance. While these controllers are being stopped
they both attempt to power-off and deinitialize it, but trying to
power-off the deinitialized PHY device results in a hang. This usually
happens just before booting an OS, and can be explicitly triggered by
running "usb start; usb stop" in the U-Boot shell.

Implement a uclass-wide counting mechanism for PHY initialization and
power state change requests, so that we don't power-off/deinitialize a
PHY instance until all of its users want it done. The Allwinner A10 USB
PHY driver does this counting in-driver, remove those parts in favour of
this in-uclass implementation.

The sandbox PHY operations test needs some changes since the uclass will
no longer call into the drivers for actions matching its tracked state
(e.g. powering-off a powered-off PHY). Update that test, and add a new
one which simulates multiple users of a single PHY.

The major complication here is that PHY handles aren't deduplicated per
instance, so the obvious idea of putting the counts in the PHY handles
don't immediately work. It seems possible to bind a child udevice per
PHY instance to the PHY provider and deduplicate the handles in each
child's uclass-private areas, like in the CLK framework. An alternative
approach could be to use those bound child udevices themselves as the
PHY handles. Instead, to avoid the architectural changes those would
require, this patch solves things by dynamically allocating a list of
structs (one per instance) in the provider's uclass-private area.

Signed-off-by: Alper Nebi Yasak 
Reviewed-by: Simon Glass 
Tested-by: Peter Robinson  - Rock960

treewide: invaild -> invalid

2022-01-13T12:57:49+00:00

Somewhere along the way, someone misspelt "invalid" and it got copied
everywhere. Fix it.

Signed-off-by: Sean Anderson 
Reviewed-by: Alexander Dahl 
Reviewed-by: Simon Glass

dm: define LOG_CATEGORY for all uclass

2021-07-06T16:38:03+00:00

Define LOG_CATEGORY for all uclass to allow filtering with
log command.

Signed-off-by: Patrick Delaunay 
Reviewed-by: Simon Glass

generic-phy: add configure op

2021-02-10T09:00:51+00:00

Add the PHY configure op callback to the generic PHY uclass to permit
configuring the PHY.

It's useful for MIPI DSI PHYs to setup the link timings.

Signed-off-by:Neil Armstrong 
Signed-off-by: Neil Armstrong

phy: Include device_compat.h

2020-10-15T22:36:56+00:00

Necessary for dev_xxx.

Signed-off-by: Sean Anderson