Linux DTS compatible MDIO bitbanging driver.
Both clause 22 and clause 45 MDIO supported and validated.
Heavily based on the Linux drivers (more or less the same code base).
Signed-off-by: Markus Gothe <markus.gothe@genexis.eu>
This reverts commit 431be621c6.
Section 3.3 of Reduced Gigabit Media Independent Interface (RGMII)
Version 2.0 (4/1/2002) details that a PHYs using a ~2ns internal delay
are referred to as RGMII-ID. This internal delay is optional.
Page 147-148 of the Marvell Doc. No. MV-S107146-U0 Rev. F details
timings of the RX/TX delays. We see that with the TX/RX_CLK delay
enabled, our RX/TX_CTL signal is shifted w.r.t CLK to reflect the delay
added.
In 431be62 there is no timing difference between RGMII and RGMII-ID, and
so programmers wanting to explicitly set their PHY to RGMII will find
that delay added anyway. This could throw off timing if that internal
delay is undesired.
We should be handling all 4 possible RGMII cases of PHY_INTERFACE_MODE:
RGMII, RGMII_ID, RGMII_TXID, and RGMII_RXID. Reverting 431be62
implements this.
See also m88e1111_config_init_rgmii_delays in the equivalent driver in
Linux (drivers/net/phy/marvell.c), which does not set these delays in
RGMII mode.
68e6eca was tested out on an 88E1512 PHY in RGMII-ID mode. This
reversion has been tested by myself on an 88E1518 in RGMII-ID mode. This
patch affects boards using this driver in "rgmii" mode, as the internal
delay will no longer be enabled. Namely kikwood-nsa310s.
Signed-off-by: Rufus Segar <rhs@riseup.net>
The wget command currently cannot work correctly with mtk_eth driver.
This patch fixed this by increase DMA ring size and invalidate ring data
after use.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Enable GDMA cpu bridge only when 10Gb interface is enabled for GMAC other
than GMAC0, or when MT7988 internal switch is used.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Not all platforms supports sgmii and/or usxgmii. So we add Kconfig
options for these features and enable them only for supported
platforms.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
MT7629 need extra setting for gmac2 to work. So additional
capability is added for mt7629 to handle this case.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Unlike other platforms, mt7622 has only one SGMII and it can be
attached to either gmac1 or gmac2. So the register field of the
sgmii selection differs from other platforms as newer platforms can
control each sgmii individually.
This patch adds a new capability for mt7622 to handle this case.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
The register field for SGMII speed selection is a 2-bit field with
value 0 for 1Gbps and 1 for 2.5Gbps (2/3 are reserved).
So it's necessary to set both bits instead of just setting/clearing
only the lower bit.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Add support for mapping C22 register access to C45-only PHYs.
This is mainly useful for 'mii info' command, which performs
C22 only access to determine PHY ID and link state and does
not work well with this driver so far.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Implement C22 PHY access support in addition to C45 PHY access
support which is already present. This is used for PHYs which
do not support C45 access or which are C22 only.
The C22 access can be recognized when devad is set to -1 or
0xffffffff hex, which also matches MDIO_DEVAD_NONE macro. Test
for this special devad value and if it is set this way, perform
C22 access, otherwise perform C45 access.
Based on work by LUU HOAI <hoai.luu.ub@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
The Set Station Management Mode : Clause 45 setting of MFF bit in MPSM
register can be done in rswitch_mii_access_c45() once, instead of this
being done before each rswitch_mii_access_c45() call. Deduplicate the
bit setting into rswitch_mii_access_c45(). No functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Replace enum rswitch_reg with plain #define REGISTER OFFSET macros.
The enum rswitch_reg was not referenced anywhere, so there was no
benefit of keeping it around. Include register block labels. Turn
all register offsets into lowercase hex values. No functional change.
Rename EATDQDC to EATDQDCR, GWTRC to GWTRCR, GWDCC to GWDCCR, FWPC0
to FWPC, FWPBFC to FWPBFCR, FWPBFCSDC to FWPBFCSDCR because there
are both register names which used to be part of this enum and also
macros with the same name, each used for slightly different purpose.
Make sure there is no collission.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
When FEC network card works as the prime one in u-boot, and is in
active status, kernel might crash during booting up stage, especially
working with grub. Because the DMA of FEC is still in active status, and
copy data into memory if there is network data received. In this case, if
kernel allocated a part of memory that has overlay with the memory
used by DMA, kernel memory may be destroyed and cause kernel crashes.
Because before kernel boots up really, u-boot dm_remove_devices_flags()
can call the remove callback of FEC driver with DM_FLAG_ACTIVE_DMA
flag. In fecmxc_remove(), phy power is disabled, so there is no data
received. In this way, it makes sure that there is no DMA action, so
that avoid kernel crashing occurs.
Signed-off-by: Meng Li <Meng.Li@windriver.com>
In case an rswitch port is described as disabled in DT, do not
register it as ethernet device in U-Boot. This way, such ports
cannot be accessed from U-Boot command line.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
TFTP transfers of large files, for example 128 MiB, can sporadically
get stuck and the transfer slows down considerably.
This happens because the TX DMA descriptor in DRAM becomes out of sync
with the view of the TX DMA descriptor content from the CPU side, which
is viewed through the CPU caches. In order to guarantee these two views
are consistent, the cache over TX DMA descriptor that has possibly been
written by the rswitch hardware must first be invalidated, only then can
the descriptor be cleared and updated by the CPU, and finally the cache
over that area must be flushed back into DRAM to make sure the rswitch
hardware has consistent view of the updated descriptor content.
The very first invalidation operation was missing, which led to sporadic
corruption of the TX DMA descriptor. Fix it, add the missing invalidation
operation.
Reported-by: Enric Balletbo i Serra <eballetb@redhat.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Tested-by: Enric Balletbo i Serra <eballetb@redhat.com>
Currently if a gigabit-capable PHY is connected to FEC via RMII or MII, it
will advertise 1000FULL and 1000HALF to a link partner.
Different problems may arise here:
- usually with (R)MII between MAC and PHY the PHY's connection to magnetics
would have only 2 pairs routed as well, otherwise a PHY can negotiate 1000
speed and there will be no traffic possible;
- but even if there is no way to negotiate 1000 speed in HW (only 2 signal
pairs routed), it may take a lot of time for PHY to figure this out; in
case of AD1300 it takes 17-20 seconds, which is waay longer than default
4s PHY_ANEG_TIMEOUT.
Use phy_set_supported() in such cases to disable gigabit advertised
options.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
We can call dev_read_u32_default() instead of calling fdt_getprop() then
fdt32_to_cpu().
Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
probing on capricorn board (imx8qxp based) brings:
Can't find FEC0 clk rate: -19
Cause is that when probing fec_mxc driver, fec_mii_setspeed()
is called which calls fec_get_clk_rate().
fec_mii_setspeed() calls fec_get_clk_rate with NULL pointer
for udev and so as in IMX8QXP case CLK_CCF is enabled
udev gets searched with:
uclass_get_device_by_seq(UCLASS_ETH, idx, &dev);
but we do not have yet a UCLASS_ETH ! as we just probing it!
Prevent this by passing udev to fec_get_clk_rate()
Signed-off-by: Heiko Schocher <hs@denx.de>
They were added with commit 0e9d23945c ("net: eqos: implement callbaks
to get interface and set txclk rate") but were not removed with
commit 5fc783b5d9 ("net: dwc_eth_qos: move i.MX code out") when i.MX
specific code was moved to a separate file.
Signed-off-by: Erik Schumacher <erik.schumacher@iris-sensing.com>
The EQOS on i.MX93 fails to finish the reset procedure in RMII mode.
This is described in errata ERR051683. This patch implements the
provided workaround which sets the PS and FES bits after the SWR is set
by using the eqos_fix_soc_reset function.
Adapted from linux-kernel commit b536f32b5b03 ("net: stmmac: dwmac-imx:
use platform specific reset for imx93 SoCs")
Signed-off-by: Erik Schumacher <erik.schumacher@iris-sensing.com>
This patch adds support for optional platform specific reset logic in
the dwc_eth_qos driver. This new function 'eqos_fix_soc_reset' is called
after the EQOS_DMA_MODE_SWR is set and before the driver waits for this
bit to clear.
Signed-off-by: Erik Schumacher <erik.schumacher@iris-sensing.com>
Romain Naour <romain.naour@smile.fr> says:
We are using a custom board where an ethernet switch device KSZ9896 is
available. This family of devices can use several types of serial bus
as management interface: mdio, i2c or SPI. Due to board design
constraints and because we initially planned to use this device only
from Linux, the SPI bus was used.
Luckily we are using a recent enough u-boot release where KSZ9477
driver is available... but only for the i2c interface. Indeed, unlike
the kernel driver, the KSZ9477 driver doesn't use the regmap API to
access the underlying bus since the regmap API is limited to direct
memory access [1].
Until regmap API with bus support is available in U-boot, we introduced
struct ksz_phy_ops to store low-level ksz bus operations (I2C or SPI).
This series has been tested on the current master branch (after v2024.10
release).
[1] https://source.denx.de/u-boot/u-boot/-/blob/v2024.10-rc5/drivers/core/Kconfig?ref_type=tags#L188
Link: https://lore.kernel.org/r/20241008075435.1572727-1-romain.naour@smile.fr
Some drivers do not behave properly when free_pkt() is called with a
length of zero. It is an issue I observed when developing the lwIP
series [1] (see "QEMU CI tests for r2dplus_i82557c, r2dplus_rtl8139"
in the change log) and which I fixed incorrectly by not calling
free_pkt() when recv() returns 0. That turned out to be wrong for two
reasons:
1. The DM documentation [2] clearly requires it:
"The **recv** function polls for availability of a new packet. [...]
If there is an error [...], return 0 if you require the packet to
be cleaned up normally, or a negative error code otherwise (cleanup
not necessary or already done).
If **free_pkt** is defined, U-Boot will call it after a received
packet has been processed [...]. free_pkt() will be called after
recv(), for the same packet [...]"
2. The imx8mp_evk platform will fail with OOM errors if free_pkt() is
not called after recv() returns 0:
u-boot=> tftp 192.168.0.16:50M
Using ethernet@30be0000 device
TFTP from server 192.168.0.16; our IP address is 192.168.0.48
Filename '50M'.
Load address: 0x40480000
Loading: #######################fecmxc_recv: error allocating packetp
fecmxc_recv: error allocating packetp
fecmxc_recv: error allocating packetp
...
Therefore, make recv() return -EAGAIN instead of 0 when no packet is
available and the driver doesn't expect free_pkt() to be called
subsequently.
[1] https://lists.denx.de/pipermail/u-boot/2024-August/562861.html
[2] doc/develop/driver-model/ethernet.rst
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
The Microchip KSZ Gigabit Ethernet Switches support
SGMII/RGMII/MII/RMII with register access via SPI, I2C, or MDIO.
Since this driver is now able to check the underlying bus type,
handle the case when the SPI bus is used.
The SPI bus is only used for 8/16/32 wide access of registers.
Reword Kconfig option to include SPI bus support.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
With the upcoming ksz9477 SPI support added, the I2C support
will be optional. Either the I2C or the SPI bus will be used.
For now, DM_I2C is still mandatory.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
In order to support management bus other than the I2C, rename
ksz_i2c_probe() to ksz_probe() since this function is no longer
specific to the I2C bus.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
The ksz9477 Linux kernel driver is based on regmap API to seamlessly
communicate to switch devices connected via different buses like SPI
or I2C. The current regmap implementation in U-Boot only supports
memory-mapped registers access [1].
Until regmap API with bus support is available in U-boot, introduce
struct ksz_phy_ops to store low-level ksz bus operations (I2C for now).
[1] https://lists.denx.de/pipermail/u-boot/2018-May/329392.html
Signed-off-by: Romain Naour <romain.naour@smile.fr>
In order to add ksz9477 SPI bus support, check parent bus
is an I2C bus before calling i2c_set_offset_len().
Doing so, ksz_i2c_probe() will now return an error (-EINVAL) if
the parent bus is not the one expected by the ksz-switch u-boot
driver.
Indeed, the DSA KSZ devicetree binding doesn't specify anything
about the underlying bus between the SoC and the DSA switch, so
the same "compatible" string can be used wathever the management
interface used (SPI or I2C).
The ksz-switch u-boot driver currently only support I2C interface
but will match a compatible "microchip,ksz9xxx" located under
under an SPI bus node.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
The DSA KSZ devicetree binding doesn't specify anything about the
underlying bus between the SoC and the DSA switch, so the same
"compatible" string can be used wathever the management interface
used. The driver must be able to access the underlying bus without
any help from the compatible string (like for TPM2 TIS devices).
So, rename udevice_id tab to ksz_ids since it's not specific to i2c
bus.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Add support for the KSZ9896 6-port Gigabit Ethernet Switch to the
ksz9477 driver.
The KSZ9896 is similar to KSZ9897 but has only one configurable
MII/RMII/RGMII/GMII cpu port.
Signed-off-by: Romain Naour <romain.naour@smile.fr>
The ksz9477 is currently the only driver using dev_set_parent_priv()
outside of the driver model. Also, there was no explanation in the
commit adding ksz9477 driver and why dev_set_parent_priv() is
required.
Actually there is a typo in ksz_mdio_probe() while retrieving
the parent (switch@0) private data:
- priv->ksz = dev_get_parent_priv(dev->parent);
+ priv->ksz = dev_get_priv(dev->parent);
Printing the address of struct ksz_dsa_priv *priv allows
to notice the slight difference:
ksz_i2c_probe: ksz_dsa_priv *priv 0xfdf45768 // address of the saved priv
ksz_mdio_bind: ksz_dsa_priv *priv 0xfdf45798 // address returned by dev_get_parent_priv(dev->parent)
ksz_mdio_bind: ksz_dsa_priv *priv 0xfdf45768 // address returned by dev_get_priv(dev->parent)
The ksz_mdio driver get the wrong data and without
dev_set_parent_priv() the mdio driver fail to access the underlying
bus.
While it doesn't cause any issue with I2C bus, it override the
per-child data used by the SPI bus (struct spi_slave) and prevent
further bus access (even with sspi command).
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Add a driver for the motorcomm YT8821 2.5G ethernet phy which works in
2500base-x mode.
Verify the driver on BPI-R3(with MediaTek MT7986(Filogic 830) SoC) evb.
Signed-off-by: Frank Sae <Frank.Sae@motor-comm.com>
Remove the OMR_PM flag and choose 16 perfect filtering mode since in
modern networks there're plenty of multicasts and set ORM_PM flag will
increase the dc2114x's workload and ask the U-Boot to handle packets
not related to itself. And most of the time, U-Boot does not need this
feature.
Signed-off-by: Hanyuan Zhao <zhaohy22@mails.tsinghua.edu.cn>
Some IP cores of dc2114x or its variants do not comply so well with
the behaviors described by the official document. Originally this
driver uses only one tx descriptor and organizes it as a ring buffer,
which would lead to a problem that one packet would be sent twice.
This commit adds support to prevent this bug if you are using IP
cores with this issue, by using multiple tx descriptors and
organizing them as a real well-defined ring buffer.
Signed-off-by: Hanyuan Zhao <zhaohy22@mails.tsinghua.edu.cn>
Some IP cores of dc2114x or its variants do not comply so well with
the behaviors described by the official document. A packet could be
sent successfully but reported with No Carrier error. Latest drivers
of this IP core have not detect this error anymore.
Signed-off-by: Hanyuan Zhao <zhaohy22@mails.tsinghua.edu.cn>
This commit fixes a problem that even though the network card does not report
any issues in transmitting a setup frame, the driver prints the error status
every time. Let's set it for debug use.
Signed-off-by: Hanyuan Zhao <zhaohy22@mails.tsinghua.edu.cn>
This commit adds support for the MIPS and LoongArch CPUs, which would use cache
after they jump into U-Boot. This commit requests the CPU to return the
addresses in uncached windows and flushes the cache in need, to make sure the
memory between the CPU and the network card is in consistency.
Signed-off-by: Hanyuan Zhao <zhaohy22@mails.tsinghua.edu.cn>
