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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2021-06-18 06:45:53 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2021-06-21 14:15:58 +0300
commitaa9c5adf2f61da39c92280d9336e091852e292ff (patch)
tree68ec33035c8024e57c2b1ea64e7612a7b9721f09 /arch/powerpc/boot
parent0d0f9e5f2fa7aacf22892078a1065fa5d0ce941b (diff)
downloadlinux-aa9c5adf2f61da39c92280d9336e091852e292ff.tar.xz
powerpc/xics: Add a native ICS backend for microwatt
This is a simple native ICS backend that matches the layout of the Microwatt implementation of ICS. 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> [mpe: Add empty ics_native_init() to unbreak non-microwatt builds] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> fixup-ics Link: https://lore.kernel.org/r/YMwW8cxrwB2W5EUN@thinks.paulus.ozlabs.org
Diffstat (limited to 'arch/powerpc/boot')
-rw-r--r--arch/powerpc/boot/dts/microwatt.dts18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/boot/dts/microwatt.dts b/arch/powerpc/boot/dts/microwatt.dts
index 9b6140c90370..04e5dd92270e 100644
--- a/arch/powerpc/boot/dts/microwatt.dts
+++ b/arch/powerpc/boot/dts/microwatt.dts
@@ -99,7 +99,25 @@
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
+ interrupt-parent = <&ICS>;
ranges = <0 0 0xc0000000 0x40000000>;
+
+ interrupt-controller@4000 {
+ compatible = "openpower,xics-presentation", "ibm,ppc-xicp";
+ ibm,interrupt-server-ranges = <0x0 0x1>;
+ reg = <0x4000 0x100>;
+ };
+
+ ICS: interrupt-controller@5000 {
+ compatible = "openpower,xics-sources";
+ interrupt-controller;
+ interrupt-ranges = <0x10 0x10>;
+ reg = <0x5000 0x100>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #interrupt-cells = <2>;
+ };
+
};
};