Add and enable the Realtek Otto WDT peripheral found on these SoCs.
Default all devices to use standard (cold) reboot and "soc" resets.
Devices that require the PLL value fixup before restarting, should pick
the "cpu" or "software" reset mode. These devices also need to provide a
custom reboot mode, by adding the reboot argument to the kernel command
line:
WDT reset mode | kernel reboot mode
----------------+---------------------------------------
soc | reboot=cold (default if not specified)
cpu | reboot=warm
software | reboot=software
Preferrably, these devices should use an alternative restart method like
gpio-restart to provide reliable restarts.
Note that watchdog restarts are not yet exposed, since the
_machine_restart override is still present.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Tested-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
The CPU peripherals on RTL83xx/RTL930x are connected to the CPU via the
Lexra bus. This bus can provide a clock signal to these peripherals, but
no clock driver is currently available. Instead, use a fixed-clock to
provide the clock frequency, and update the dependent peripherals.
Lexra bus clock frequencies:
- RTL838x: 200MHz
- RTL839x: 200MHz
- RTL930x: 175MHz
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Tested-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
All current devices use identical bootargs, so let's move that to the
common devicetree includes.
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Tested-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: Stijn Tintel <stijn@linux-ipv6.be>
this patch updates SoC dtsi (rtl838x.dtsi, rtl930x.dtsi) for the
following backported drivers:
- gpio-realtek-otto (5.13)
- spi-realtek-rtl (5.12)
- irq-realtek-rtl (5.12)
And, disable SoC GPIO node (gpio0) in rtl930x.dtsi in dts-5.10.
Currently, the upstreamed driver doesn't support the GPIO controller on
RTL930x SoC.
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
the following changes are included in this patch:
- node is enabled by default, drop 'status = "okay"'
- adjust order of "compatible" lines and "reg" lines
- add a new blank line before fixed-link node in rtl830x.dtsi
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
This patch adds "dts-5.10" directory to use backported drivers.
There are several specification changes in the new drivers, so there
are some compatibility issues in using dts/dtsi files for 5.4.
The old DTS files are moved to "dts-5.4", so their corresponding
kernel version is obvious as well.
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
[change "dts" to "dts-5.4", adjust Makefile]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
