On Sat, Apr 12, 2025 at 07:19:49AM +0530, Krishna Chaitanya Chundru wrote: > TC9563 is the PCIe switch which has one upstream and three downstream > ports. To one of the downstream ports ethernet MAC is connected as endpoint > device. Other two downstream ports are supposed to connect to external > device. One Host can connect to TC956x by upstream port. > > TC9563 switch power is controlled by the GPIO's. After powering on > the switch will immediately participate in the link training. if the > host is also ready by that time PCIe link will established. > > The TC9563 needs to configured certain parameters like de-emphasis, > disable unused port etc before link is established. > > As the controller starts link training before the probe of pwrctl driver, > the PCIe link may come up as soon as we power on the switch. Due to this > configuring the switch itself through i2c will not have any effect as > this configuration needs to done before link training. To avoid this > introduce two functions in pci_ops to start_link() & stop_link() which > will disable the link training if the PCIe link is not up yet. > > This series depends on the https://lore.kernel.org/all/20250124101038.3871768-3-krishna.chundru@xxxxxxxxxxxxxxxx/ > > Note: The QPS615 PCIe switch is rebranded version of Toshiba switch TC9563 series. > There is no difference between both the switches, both has two open downstream ports > and one embedded downstream port to which Ethernet MAC is connected. As QPS615 is the > rebranded version of Toshiba switch rename qps615 with tc956x so that this driver > can be leveraged by all who are using Toshiba switch. > > Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx> Krishna, the series no longer applies to linux-next. There were comments which required another respin. When can we expect a next revision? -- With best wishes Dmitry
