On 7/21/23 07:46, Andre Przywara wrote:
The Allwinner T113-s SoC is apparently using the same (or at least a very
similar) die as the D1/D1s, but replaces the single RISC-V core with
two Arm Cortex-A7 cores.
Since the D1 core .dtsi already describes all common peripherals, we
just need a DT describing the ARM specific peripherals: the CPU cores,
the Generic Timer, the GIC and the PMU.
We include the core .dtsi directly from the riscv DT directory.
The ARM core version of the DT specifies the CPUX watchdog as
"reserved", which means it won't be recognised by U-Boot. Override this
in our generic sunxi-u-boot.dtsi, to let U-Boot pick up this watchdog,
so that the generic reset driver will work.
Signed-off-by: Andre Przywara <andre.przyw...@arm.com>
Reviewed-by: Sam Edwards <cfswo...@gmail.com>
Tested-by: Sam Edwards <cfswo...@gmail.com>
diff --git a/arch/arm/dts/sunxi-u-boot.dtsi b/arch/arm/dts/sunxi-u-boot.dtsi
index af419c7e590..a0c8abb7033 100644
--- a/arch/arm/dts/sunxi-u-boot.dtsi
+++ b/arch/arm/dts/sunxi-u-boot.dtsi
@@ -23,6 +23,13 @@
};
};
+/* Let U-Boot be the firmware layer that controls the watchdog. */
+#ifdef CONFIG_MACH_SUN8I_R528
+&wdt {
+ status = "okay";
+};
+#endif
+
&binman {
u-boot-sunxi-with-spl {
filename = "u-boot-sunxi-with-spl.bin";
Nice!!
Thanks,
Sam
