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21 commits

Author SHA1 Message Date
Angus Ainslie
606a14ba2f phy: phy-uclass: check the parents for phys
The port/hub leaf nodes don't contain the phy definitions in some dts
files so check the parents.

Signed-off-by: Angus Ainslie <angus@akkea.ca>
Reviewed-by: Simon Glass <sjg@chromium.org>
2022-02-22 10:05:44 -07:00
Alper Nebi Yasak
226fce6108 phy: Track power-on and init counts in uclass
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 <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Peter Robinson <pbrobinson@gmail.com> - Rock960
2022-01-14 14:36:57 -05:00
Sean Anderson
46ad7cef64 treewide: invaild -> invalid
Somewhere along the way, someone misspelt "invalid" and it got copied
everywhere. Fix it.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2022-01-13 07:57:49 -05:00
Patrick Delaunay
b953ec2bca dm: define LOG_CATEGORY for all uclass
Define LOG_CATEGORY for all uclass to allow filtering with
log command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-07-06 10:38:03 -06:00
Neil Armstrong
f8da8a82c5 generic-phy: add configure op
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 <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
2021-02-10 10:00:51 +01:00
Sean Anderson
bdc1fdf6fc phy: Include device_compat.h
Necessary for dev_xxx.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
2020-10-15 18:36:56 -04:00
Patrick Delaunay
89f68302ca dm: add cells_count parameter in *_count_phandle_with_args
The cell_count argument is required when cells_name is NULL.

This patch adds this parameter in live tree API
- of_count_phandle_with_args
- ofnode_count_phandle_with_args
- dev_count_phandle_with_args

This parameter solves issue when these API is used to count
the number of element of a cell without cell name. This parameter
allow to force the size cell.

For example:
  count = dev_count_phandle_with_args(dev, "array", NULL, 3);

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-10-06 09:07:54 -06:00
Patrick Delaunay
2041ae5a5a phy: generic: add error trace to detect PHY issue in uclass
Add an error trace for PHY errors directly in generic phy
functions provided by PHY uclass.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-09-08 08:46:32 -04:00
Vignesh Raghavendra
64b69f8c89 phy: Fix possible NULL pointer deference
It is possible that users of generic_phy_*() APIs may pass a valid
struct phy pointer but phy->dev can be NULL, leading to NULL pointer
deference in phy_dev_ops().

So call generic_phy_valid() to verify that phy and phy->dev are both
valid.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
2020-05-25 11:54:53 -04:00
Simon Glass
f7ae49fc4f common: Drop log.h from common header
Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
2020-05-18 21:19:18 -04:00
Jagan Teki
5a2b6778fa phy: Use _nodev naming convention if non-device clients
Clients that are requesting some of uclass API's
without a device (with ofnode) usually have _nodev
naming convention.

- clk_get_by_index_nodev
- clk_get_by_name_nodev
- reset_get_by_index_nodev
- gpio_request_by_name_nodev

So, update the same naming convention PHY framework.

This doesn't change the existing functionality.

Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Tom Rini <trini@konsulko.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2020-05-11 01:30:49 +05:30
Chunfeng Yun
b13307b470 phy: Add API for a bulk of phys
This patch adds a "bulk" API to the phy API in order to
get/init/exit/power on/off a group of phys associated
with a device.

The bulk API will avoid adding a copy of the same code to
manage a group of phys in drivers.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Weijie Gao <weijie.gao@mediatek.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2020-05-02 12:32:28 +02:00
Neil Armstrong
c2b9aa98bf generic-phy: add generic_phy_get_by_node()
Add generic_phy_get_by_node() to get a PHY phandle from a node instead
of a udevice.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[narmstrong: fixed by including ofnode.h in generic-phy.h]
2020-04-20 14:19:10 +02:00
Jean-Jacques Hiblot
4e18429883 drivers: phy: Handle gracefully NULL pointers
For some controllers PHYs can be optional. Handling NULL pointers without
crashing nor failing, makes it easy to handle optional PHYs.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
2019-10-31 07:22:53 -04:00
Marek Vasut
5e50adf667 phy: Fix off-by-one error when parsing DT PHY bindings
The code fails to copy the last PHY phandle argument, so it is
missing from the adjusted phandle args and the consumer cannot
use it to determine what the PHY should do.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
2018-08-14 11:31:19 +02:00
Patrice Chotard
a1b2faed7c phy: Be able to get phy from PHY provider
In case of phy are provided from a PHY provider nodes as following:

usbphyc: usb-phy@5a006000 {
	compatible = "st,stm32mp1-usbphyc";
	reg = <0x5a006000 0x1000>;
	clocks = <&rcc_clk USBPHY_K>;
	resets = <&rcc_rst USBPHY_R>;
	#address-cells = <1>;
	#size-cells = <0>;

	usbphyc_port0: usb-phy@0 {
		reg = <0>;
		phy-supply = <&vdd_usb>;
		vdda1v1-supply = <&reg11>;
		vdda1v8-supply = <&reg18>
		#phy-cells = <0>;
	};

	usbphyc_port1: usb-phy@1 {
		reg = <1>;
		phy-supply = <&vdd_usb>;
		vdda1v1-supply = <&reg11>;
		vdda1v8-supply = <&reg18>
		#phy-cells = <1>;
	};
};

and PHY are called as following:

usbh_ehci: usbh-ehci@5800d000 {
	compatible = "generic-ehci";
	reg = <0x5800d000 0x1000>;
	clocks = <&rcc_clk USBH>;
	resets = <&rcc_rst USBH_R>;
	interrupts = <GIC_SPI 75 IRQ_TYPE_NONE>;
	companion = <&usbh_ohci>;
	phys = <&usbphyc_port0>;
	phy-names = "usb";
	status = "okay";
};

generic_phy_get_by_index() must be updated to first look for
PHY phandle as previously and in case of error looks for PHY
provider by finding the parent's current node which is the PHY
provider.
args (ofnode_phandle_args struct) must also be updated by inserting
the phy index into the PHY provider as args[0].

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2018-07-19 16:31:35 -04:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Tom Rini
d024236e5a Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-04-27 14:54:48 -04:00
Patrice Chotard
b9688df3cb drivers: phy: Set phy->dev to NULL when generic_phy_get_by_index() fails
phy->dev need to be set to NULL in case of generic_phy_get_by_index()
fails. Then phy->dev can be used to check if the phy is valid

Reported-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-07-28 23:34:04 +02:00
Simon Glass
23558bb67a dm: phy: Update uclass to support livetree
Update the phy uclass to support livetree. Fix the xlate() method
which has no callers.

Signed-off-by: Simon Glass <sjg@chromium.org>
2017-06-01 07:03:15 -06:00
Jean-Jacques Hiblot
72e5016f87 drivers: phy: add generic PHY framework
The PHY framework provides a set of APIs to control a PHY. This API is
derived from the linux version of the generic PHY framework.
Currently the API supports init(), deinit(), power_on, power_off() and
reset(). The framework provides a way to get a reference to a phy from the
device-tree.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-09 12:14:16 -06:00