Commit graph

20670 commits

Author SHA1 Message Date
Philippe Reynes
a12492ebbc drivers: watchdog: wdt-uclass.c: add a property u-boot, noautostart
Since commit 492ee6b8d0 ("watchdog: wdt-uclass.c: handle all DM
watchdogs in watchdog_reset()"), all the watchdog are started when
the config WATCHDOG_AUTOSTART.

To avoid a binary choice none/all, a property u-boot,noautostart
may be added in the watchdog node of the u-boot device tree to not
autostart this watchdog.

Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-03-08 09:08:00 +01:00
Marek Behún
87724d5c90 arm64: a37xx: pinctrl: Fix PWM pins indexes
Commit 5534fb4f48 ("arm64: a37xx: pinctrl: Correct PWM pins
definitions") introduced bogus definitions os PWM pins: all 4 pins have
index 11, instead of having indexes 11, 12, 13, 14.

Fix this.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-03-04 08:38:05 +01:00
Francois Berder
2454de2c34 drivers: rtc: fix null pointer access in armada38x_rtc_reset
Replace null pointer by pointer to device registers when calling
armada38x_rtc_write.

Signed-off-by: Francois Berder <fberder@outlook.fr>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-03-04 08:38:05 +01:00
Pali Rohár
fc27e5df63 pci: pci_mvebu: Cleanup macro names
Use "MVPCIE_" prefix instead of generic "PCIE_" prefix for pci_mvebu.c
specific macros. Define offset macros for Root Port registers and use
standard register macros from pci.h when accessing Root Port registers.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-03-04 08:38:05 +01:00
Pali Rohár
68285176a9 pci: pci_mvebu: Remove unused SELECT and lane_mask
Macro SELECT() is unused and struct mvebu_pcie field lane_mask is unused
too. Remove them.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-03-04 08:38:05 +01:00
Tom Rini
705b5840cd Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq
Update and fixes for sl28, lx2, pblimage generation for some powerpc
products
2022-03-03 08:24:13 -05:00
Tim Harvey
a41b88ec02 phy: nop-phy: Fix phy reset if no reset-gpio defined
Ensure there is a valid reset-gpio defined before using it.

Fixes: f9852acdce ("phy: nop-phy: Fix enabling reset")
Cc: Adam Ford <aford173@gmail.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
2022-03-01 00:21:11 +01:00
Michael Walle
07d6cb9378 gpio: add sl28cpld driver
The gpio block is part of the sl28cpld sl28cpld management controller.
There are three different flavors: the usual input and output where the
direction is configurable, but also input only and output only variants.

Signed-off-by: Michael Walle <michael@walle.cc>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
2022-02-28 11:59:35 +05:30
Michael Walle
f606c9a895 watchdog: add sl28cpld watchdog driver
The watchdog timer is part of the sl28cpld management controller. The
watchdog timer usually supervises the bootloader boot-up and if it bites
the failsafe bootloader will be activated. Apart from that it supports
the usual board level reset and one SMARC speciality: driving the
WDT_TIMEOUT# signal.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
2022-02-28 11:59:35 +05:30
Michael Walle
42595eb706 misc: add sl28cpld base driver
Add a multi-function device driver which will probe its children and
provides methods to access the device.

Signed-off-by: Michael Walle <michael@walle.cc>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
2022-02-28 11:59:35 +05:30
Adam Ford
a26c2b155b net: ravb: Add tx/rx delay flag checks and support for rgmii-rxid
Some boards like the Beacon RZ/G2 SOM use either flags for
tx-internal-delay-ps, rx-internal-delay-ps or rgmii-rxid.

In Linux the APSR_RDM flag is set when either rx-internal-delay-ps
is set or the mode is rgmii-rxid, and the APSR_TDM is set when
tx-internal-delay-ps is found or rgmii-txid is set, and both
are set if rgmii-id is set.

The ravb driver in U-Boot driver was missing rgmii-rxid support,
so add that support in a similar fashion to what is done in Linux.

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-25 21:42:07 +01:00
Patrick Delaunay
b0cdd8287a clk: ccf: correct the test on the parent uclass in clk_enable/clk_disable
It is safe to check if the uclass id on the device is UCLASS_CLK
before to call the clk_ functions, but today this comparison is
not done on the device used in API: clkp->dev->parent
but on the device himself: clkp->dev.

This patch corrects this behavior and tests if the parent device
is a clock device before to call the clock API, clk_enable or
clk_disable, on this device.

Fixes: 0520be0f67 ("clk: prograte clk enable/disable to parent")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
2022-02-25 01:41:04 -05:00
Sean Anderson
e96e2132f9 clk: Add clk_get_by_name_optional
This adds a helper function for clk_get_by_name in cases where the clock is
optional. Hopefully this helps point driver writers in the right direction.
Also convert some existing users.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20220115205247.566210-2-seanga2@gmail.com
2022-02-25 01:41:04 -05:00
Sean Anderson
14cacb019c clk: Inline clk_get_*_optional
The optional varients of clk_get_* functions are just simple wrappers.
Reduce code size a bit by inlining them. On platforms where it is not used
(most of them), it will not be compiled in any more. On platforms where
they are used, the inlined branch should not cause any significant growth.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20211222171114.3091780-3-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
011bbfbb30 clk: Rename clk_get_optional_nodev
This normalizes the name of this accessor function to put "_optional" last.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20211222171114.3091780-2-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
6c9239351a clk: cdce9xx: Convert .of_xlate to .request
This xlate function just performs some checking. We can do this in
request() instead and use the default xlate.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Tero Kristo <kristo@kernel.org>
Link: https://lore.kernel.org/r/20211215164718.2778664-1-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
e8db644e0d clk: versaclock: Remove xlate function
This function is the same as the default xlate. Remove it.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Adam Ford <aford173@gmail.com>
Link: https://lore.kernel.org/r/20211201201317.2174547-1-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
ea5f44325a clk: Remove no-op request and rfree callbacks
These callbacks are optional. Remove ones which do nothing.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20211201195100.2173465-1-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
052bebe54f clk: Rename ICS8N3QV01 to CLK_ICS8N3QV01
This driver was missing a clock prefix. Add one.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20211215163620.2770126-4-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
7d4a785203 clk: Alphabetize Kconfig
This alphabetizes the Kconfig for the clock subsystem. This will help
people find their clocks, and help prevent merge conflicts.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20211215163620.2770126-3-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Sean Anderson
d5d7bb70a6 clk: Alphabetize Makefile
This alphabetizes the clock makefile by Kconfig option. This will help
prevent merge conflicts.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Link: https://lore.kernel.org/r/20211215163620.2770126-2-seanga2@gmail.com
2022-02-24 23:58:13 -05:00
Tom Rini
90de95f744 Merge https://gitlab.denx.de/u-boot/custodians/u-boot-usb
- OMAP EHCI updates
2022-02-23 13:34:14 -05:00
Adam Ford
fc4bee1830 usb: ehci-omap: Remove OMAP_EHCI_PHYx_RESET_GPIO from Kconfig
With the omap-ehci driver now using the phy subsystem to enable
and disable reset, the driver no longer needs to know which
GPIO's are used, and they can be removed from Kconfig.

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-23 05:25:17 +01:00
Adam Ford
70dbff1f9e usb: ehci-omap: Use PHY system to manage phy resets
There are a few boards that use hard-coded GPIO definitions in
their respective defconfig files.  If the GPIO's are listed
in their device trees, the nop-phy can toggle the GPIO's,
so the EHCI driver does not need to know anything about the
GPIO's. Add functions for getting the phys and remove the GPIO
toggles since the phy will now do that.

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-23 05:25:17 +01:00
Adam Ford
d11f995cb9 usb: ehci-omap: Make Kconfig select PHY if USB_EHCI_OMAP
The USB_EHCI_OMAP driver currently has a series of Kconfig options
which let users specify a GPIO for the reset pin.  Some devices
may have only one reset, while others might have more.

Since there is a nop phy driver, let's selct enable the PHY
system, and imply the nop phy driver.  The nop phy driver can now
toggle the reset pins when putting the phy in and out of reset.

If the gpio is listed under the phy, it will get toggled and
the hard-coded config options specifying the GPIO numbers can
eventually go away.

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-23 05:25:17 +01:00
Adam Ford
f9852acdce phy: nop-phy: Fix enabling reset
The reset function should place the phy into reset, while the
init function should take the phy out of reset.  Currently the
reset function takes it out of reset, and the init calls the
reset.

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-23 05:25:17 +01:00
Adam Ford
ac0c125b7e usb: ehci-omap: Move omap_ehci_hcd_init to omap_ehci_probe
The OMAP3 hierarchy has the ehci node as a sub-node of the
usbhshost. The usbhshost node contains an ohci and an ehci
subnode.  The configuration of the ehci belongs in the
EHCI node and not its parent.  Move it to the proper probe.

usb start
  starting USB...
  Bus ehci@48064800: USB EHCI 1.00
  Bus usb_otg_hs@480ab000: Port not available.
  scanning bus ehci@48064800 for devices... 3 USB Device(s) found
       scanning usb for storage devices... 1 Storage Device(s) found

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-23 05:25:17 +01:00
Adam Ford
0935dbf4c9 usb: ehci-omap: Drop dead code
omap_ehci_hcd_stop appears to be dead code, and omap_ehci_hcd_init
is only called by the probe function, so it can be static to that
function.  Remove both from the header along with some additional
checking for DM_USB.

Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-23 05:25:17 +01:00
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
Tom Rini
17a0dc6abf Merge branch '2022-02-21-platform-updates'
- Assorted updates / fixes for Apple, TI and Aspeed platforms
2022-02-21 08:53:24 -05:00
Nikita Yushchenko
a064e0c75f ti: i2c: fix probe_chip() return value
Per documentation, dm_i2c_ops.probe_chip() shall return -EREMOTEIO if
probe fails.

Currently, omap_i2c_probe_chip() returns 1 instead. Fix that.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
2022-02-21 08:39:52 -05:00
Neal Liu
829b41171b crypto: aspeed: fix polling RSA status wrong issue
Check interrupt status to see if RSA engine is completed. After completion
of the task, write-clear the status to finish operation.
Add missing register base for completion.

Fixes: 89c36cca0b ("crypto: aspeed: Add AST2600 ACRY support")
Signed-off-by: Neal Liu <neal_liu@aspeedtech.com>
Reviewed-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
2022-02-21 08:35:40 -05:00
Janne Grunau
d15e1926ff iommu: Add M1 Pro/Max support to Apple DART driver
For the purpose of this driver (activating bypass mode) t6000-dart
and t8103-dart are fully compatible.

Signed-off-by: Janne Grunau <j@jannau.net>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
2022-02-21 08:35:40 -05:00
Tom Rini
24b628a8f8 Xilinx changes for v2022.04-rc3
microblaze:
 - Fix exception handler
 
 zynqmp:
 - Show information about secure images
 - DT changes (som u-boot file removal)
 - Fix zynqmp_pm_cfg_obj_convert.py
 - Fix platform boot
 
 xilinx:
 - Fix bootm_size calculation
 - Remove GPIO_EXTRA_HEADER selection
 
 power:
 - Add zynqmp power management driver
 
 scsi:
 - Add phy support to ceva driver
 
 zynq qspi:
 - Fix unaligned accesses and check baudrate setup
 - Add support for spi memory operations
 
 net:
 - Fix 64bit calculation in axi_emac
 
 video:
 - Add missing gpio dependency for seps driver
 -----BEGIN PGP SIGNATURE-----
 
 iF0EABECAB0WIQQbPNTMvXmYlBPRwx7KSWXLKUoMIQUCYhOKGwAKCRDKSWXLKUoM
 IQP/AJ9U6inecbFh6LWchwX1ByhHVB0NuQCeLExfpcscdJlVUtNBC8kaRrrdjVM=
 =nq1B
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Merge tag 'xilinx-for-v2022.04-rc3' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze

Xilinx changes for v2022.04-rc3

microblaze:
- Fix exception handler

zynqmp:
- Show information about secure images
- DT changes (som u-boot file removal)
- Fix zynqmp_pm_cfg_obj_convert.py
- Fix platform boot

xilinx:
- Fix bootm_size calculation
- Remove GPIO_EXTRA_HEADER selection

power:
- Add zynqmp power management driver

scsi:
- Add phy support to ceva driver

zynq qspi:
- Fix unaligned accesses and check baudrate setup
- Add support for spi memory operations

net:
- Fix 64bit calculation in axi_emac

video:
- Add missing gpio dependency for seps driver
2022-02-21 08:32:02 -05:00
Haibo Chen
d7d042e8b6 mmc: fsl_esdhc_imx: correct the actual card clock
The original code logic can not show the correct card clock, and also
has one risk when the div is 0. Because there is div -=1 before.

So move the operation before div -=1, and also involve ddr_pre_div
to get the correct value.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2022-02-19 14:46:54 +01:00
Haibo Chen
45254edd94 mmc: fsl_esdhc_imx: remove redundant ARCH_MXC
Now original fsl_esdhc.c are split as fsl_esdhc.c and fsl_esdhc_imx.c.
fsl_esdhc_imx.c only cover i.MX SoC. So ARCH_MXC is redundant.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2022-02-19 14:46:54 +01:00
Heiko Thiery
e7c5a6383b clk: imx: select [SPL_]CLK_COMPOSITE_CCF for imx8mn
The clock composite is required when using the clock framework. So
select it automatically.

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
2022-02-19 14:46:54 +01:00
Adam Ford
1a7904fdfa mmc: fsl_esdhc_imx: Use esdhc_soc_data flags to set host caps
The Linux driver automatically can detect and enable UHS, HS200, HS400
and HS400_ES automatically without extra flags being placed into the
device tree.

Right now, for U-Boot to use UHS, HS200 or HS400, the extra flags are
needed in the device tree.  Instead, go through the esdhc_soc_data
flags and enable the host caps where applicable to automatically
enable higher speeds.

Suggested-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
2022-02-19 14:46:54 +01:00
Tom Rini
8ad1c9c26f Merge https://source.denx.de/u-boot/custodians/u-boot-marvell
- a37xx: pci: Cleanup and minor fix for root port check (Pali)
- pci: mvebu: Ensure that root port is always on root zero bus (Pali)
- kwbimage: Fix dumping DATA registers for v0 images (Pali)
- kwbimage: Support for parsing extended v0 format (Pali)
- a37xx: Fix code and update DTS files to upstream version (Pali)
- a37xx: Fix and extend building memory map (Pali)
- ddr: marvell: a38x: fix BYTE_HOMOGENEOUS_SPLIT_OUT decision (Marek)
- mvebu: Optionally reset board on DDR training failure (Marek)
2022-02-17 11:03:50 -05:00
Marek Behún
a163db9fba ddr: marvell: a38x: fix BYTE_HOMOGENEOUS_SPLIT_OUT decision
In commit 3fc92a215b ("ddr: marvell: a38x: fix SPLIT_OUT_MIX state
decision") I ported a cleaned up and changed version of patch
  mv_ddr: a380: fix SPLIT_OUT_MIX state decision

In the port we removed checking for BYTE_HOMOGENEOUS_SPLIT_OUT bit,
because:
- the fix seemed to work without it
- the bit was checked for only at one place out of two, while the second
  bit, BYTE_SPLIT_OUT_MIX, was checked for in both cases
- without the removal it didn't work on Allied Telesis' x530 board

We recently had a chance to test on more boards, and it seems that the
change needs to be opposite: instead of removing the check for
BYTE_HOMOGENEOUS_SPLIT_OUT from the first if() statement, the check
needs to be added also to the second one - it needs to be at both
places.

With this change all the Turris Omnia boards I have had available to
test seem to work, I didn't encounter not even one failed DDR training.

As last time, I am noting that I do not understand what this code is
actually doing, I haven't studied the DDR training algorithm and
I suspect that no one will be able to explain it to U-Boot contributors,
so we are left with this blind poking in the code with testing whether
it works on several boards and hoping it doesn't break anything for
anyone :-(.

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Tested-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
0eebc3dbe5 pci: mvebu: Ensure that root port is always on root zero bus
Writing to the PCI_PRIMARY_BUS register of the root port should not change
bus number on which is root port present.

Same change and exactly same fix as was done in commit for pci-aardvark.c.

Fixes: a7b61ab58d ("pci: pci_mvebu: Properly configure and use PCI Bridge (PCIe Root Port)")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
682bad8cec arm: a37xx: pci: Update comment about Command/Direct mode
Code is changing PCIe controller from Command mode to Direct mode.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
6c7ccb9700 arm: a37xx: pci: Register controller also when no PCIe card is connected
Allow access to config space of PCIe Root Port (which is always present on
the root bus) even when PCIe link is down or no card is connected.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
2727e9dd27 arm: a37xx: pci: Do not try to access other buses when link is down
If a PIO request is executed while link-down, the whole controller gets
stuck in a non-functional state, and even after link comes up again, PIO
requests won't work anymore, and a reset of the whole PCIe controller is
needed. Therefore we need to prevent sending PIO requests while the link
is down.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
0c4625ac7d watchdog: armada_37xx: Convert to official DT bindings
Official DT bindings have only one reg property: watchdog address space.
Convert armada-37xx-wdt.c driver to offical DT bindings and access sel_reg
register via MVEBU_REGISTER() macro, as its value (required by U-Boot
driver) is not in DT yet. In later stage can be driver cleaned to not use
it.

This change would allow U-Boot to use A3720 watchdog DTS structure from
Linux kernel.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
af6d0938f3 usb: ehci: ehci-marvell: Update compatible string to official DT bindings
Official DT bindings use compatible string marvell,armada-3700-ehci.
Update drivers and DTS files.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
9bc68546bb phy: marvell: a3700: Update compatible string to official DT bindings
In commit d368e10705 ("phy: marvell: a3700: Convert to official DT
bindings in COMPHY driver") was done update to official DT bindings but
compatible string of official DT bindings was not updated.

Fix it now.

Fixes: d368e10705 ("phy: marvell: a3700: Convert to official DT bindings in COMPHY driver")
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
48c144f8ef rtc: ds1307: Add bindings for microchip, mcp7940x
Compatible string microchip,mcp7940x is used by Turris Mox DTS file in
Linux kernel and U-Boot ds1307.c driver works fine with it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
2a9059aef5 arm: a37xx: pci: Ensure that root port is always on root zero bus
Writing to the PCI_PRIMARY_BUS register of the root port should not change
bus number on which is root port present.

This PCI_PRIMARY_BUS register is used only for correct configuration of
legacy PCI stuff, like forwarding of PCI special cycles between buses.

Aardvark HW does not support PCI special cycles, so it does not have HW
register for PCI_PRIMARY_BUS and therefore it does not matter what is
stored in this register.

So fix this issue and do not use PCI_PRIMARY_BUS register in pci-aardvark.c
driver for moving root bus of the root port.

After this change there is no reason for storing bus number (zero) into
first_busno variable, so remove this variable.

Signed-off-by: Pali Rohár <pali@kernel.org>
Fixes: cb056005dc ("arm: a37xx: pci: Add support for accessing PCI Bridge on root bus")
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00
Pali Rohár
45e3fe65f6 arm: a37xx: pci: Use dev_read_addr()
There is only one base address, so use dev_read_addr() instead of dev_read_addr_index().

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-02-17 14:17:07 +01:00