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powerpc/microwatt: Populate platform bus from device-tree

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Just like any other embedded platform.

Add an empty soc node.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/YMwWx98+PMibZq/G@thinks.paulus.ozlabs.org
This commit is contained in:
Benjamin Herrenschmidt 2021-06-18 13:45:11 +10:00 committed by Michael Ellerman
parent 151b88e848
commit 0d0f9e5f2f
2 changed files with 15 additions and 0 deletions
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7
arch/powerpc/boot/dts/microwatt.dts
View File

@ -95,4 +95,11 @@
00 00 00 00 00 00 00 00 40 00 40];
};
soc@c0000000 {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0 0xc0000000 0x40000000>;
};
};

8
arch/powerpc/platforms/microwatt/setup.c
View File

@ -8,6 +8,8 @@
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/init.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <asm/machdep.h>
#include <asm/time.h>
@ -16,6 +18,12 @@ static int __init microwatt_probe(void)
return of_machine_is_compatible("microwatt-soc");
}
static int __init microwatt_populate(void)
{
return of_platform_default_populate(NULL, NULL, NULL);
}
machine_arch_initcall(microwatt, microwatt_populate);
define_machine(microwatt) {
.name = "microwatt",
.probe = microwatt_probe,