kernel/linux.git/drivers/net/mdio, branch v5.19

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-05-05T20:03:18+00:00

tools/testing/selftests/net/forwarding/Makefile f62c5acc800e ("selftests/net/forwarding: add missing tests to Makefile") 50fe062c806e ("selftests: forwarding: new test, verify host mdb entries") https://lore.kernel.org/all/20220502111539.0b7e4621@canb.auug.org.au/ Signed-off-by: Jakub Kicinski

net: mdio: Fix ENOMEM return value in BCM6368 mux bus controller

2022-04-30T00:58:41+00:00

Error values inside the probe function must be < 0. The ENOMEM return value has the wrong sign: it is positive instead of negative. Add a minus sign. Fixes: e239756717b5 ("net: mdio: Add BCM6368 MDIO mux bus controller") Signed-off-by: Niels Dossche Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/20220428211931.8130-1-dossche.niels@gmail.com Signed-off-by: Jakub Kicinski

net: mdio: add reset control for Aspeed MDIO

2022-04-28T07:39:31+00:00

Add reset assertion/deassertion for Aspeed MDIO. There are 4 MDIO controllers embedded in Aspeed AST2600 SOC and share one reset control register SCU50[3]. To work with old DT blobs which don't have the reset property, devm_reset_control_get_optional_shared is used in this change. Signed-off-by: Dylan Hung Reviewed-by: Philipp Zabel Reviewed-by: Andrew Lunn Reviewed-by: Andrew Jeffery Signed-off-by: Paolo Abeni

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-04-15T07:26:00+00:00

net: mdio: mscc-miim: add local dev variable to cleanup probe function

2022-04-09T03:31:51+00:00

Create a local device *dev in order to not dereference the platform_device several times throughout the probe function. Signed-off-by: Colin Foster Reviewed-by: Vladimir Oltean Signed-off-by: Jakub Kicinski

net: mdio: don't defer probe forever if PHY IRQ provider is missing

2022-04-08T21:17:55+00:00

When a driver for an interrupt controller is missing, of_irq_get() returns -EPROBE_DEFER ad infinitum, causing fwnode_mdiobus_phy_device_register(), and ultimately, the entire of_mdiobus_register() call, to fail. In turn, any phy_connect() call towards a PHY on this MDIO bus will also fail. This is not what is expected to happen, because the PHY library falls back to poll mode when of_irq_get() returns a hard error code, and the MDIO bus, PHY and attached Ethernet controller work fine, albeit suboptimally, when the PHY library polls for link status. However, -EPROBE_DEFER has special handling given the assumption that at some point probe deferral will stop, and the driver for the supplier will kick in and create the IRQ domain. Reasons for which the interrupt controller may be missing: - It is not yet written. This may happen if a more recent DT blob (with an interrupt-parent for the PHY) is used to boot an old kernel where the driver didn't exist, and that kernel worked with the vintage-correct DT blob using poll mode. - It is compiled out. Behavior is the same as above. - It is compiled as a module. The kernel will wait for a number of seconds specified in the "deferred_probe_timeout" boot parameter for user space to load the required module. The current default is 0, which times out at the end of initcalls. It is possible that this might cause regressions unless users adjust this boot parameter. The proposed solution is to use the driver_deferred_probe_check_state() helper function provided by the driver core, which gives up after some -EPROBE_DEFER attempts, taking "deferred_probe_timeout" into consideration. The return code is changed from -EPROBE_DEFER into -ENODEV or -ETIMEDOUT, depending on whether the kernel is compiled with support for modules or not. Fixes: 66bdede495c7 ("of_mdio: Fix broken PHY IRQ in case of probe deferral") Suggested-by: Robin Murphy Signed-off-by: Vladimir Oltean Acked-by: Greg Kroah-Hartman Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/20220407165538.4084809-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski

net: mdio: aspeed: Add c45 support

2022-04-08T11:20:52+00:00

Add Clause 45 support for Aspeed mdio driver. Signed-off-by: Potin Lai Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: mdio: aspeed: Introduce read write function for c22 and c45

2022-04-08T11:20:52+00:00

Add following additional functions to move out the implementation from aspeed_mdio_read() and aspeed_mdio_write(). c22: - aspeed_mdio_read_c22() - aspeed_mdio_write_c22() c45: - aspeed_mdio_read_c45() - aspeed_mdio_write_c45() Signed-off-by: Potin Lai Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: mdio: aspeed: move reg accessing part into separate functions

2022-04-08T11:20:52+00:00

Add aspeed_mdio_op() and aseed_mdio_get_data() for register accessing. aspeed_mdio_op() handles operations, write command to control register, then check and wait operations is finished (bit 31 is cleared). aseed_mdio_get_data() fetchs the result value of operation from data register. Signed-off-by: Potin Lai Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-04-08T06:24:23+00:00

No conflicts. Signed-off-by: Jakub Kicinski