[PATCH 1/1] riscv: dts: microchip: correct L2 cache interrupts

Heinrich Schuchardt heinrich.schuchardt at canonical.com
Wed Aug 17 06:25:21 PDT 2022


The "PolarFire SoC MSS Technical Reference Manual" documents the
following PLIC interrupts:

1 - L2 Cache Controller Signals when a metadata correction event occurs
2 - L2 Cache Controller Signals when an uncorrectable metadata event occurs
3 - L2 Cache Controller Signals when a data correction event occurs
4 - L2 Cache Controller Signals when an uncorrectable data event occurs

This differs from the SiFive FU540 which only has three L2 cache related
interrupts.

The sequence in the device tree is defined by an enum:

    enum {
            DIR_CORR = 0,
            DATA_CORR,
            DATA_UNCORR,
            DIR_UNCORR,
    };

So the correct sequence of the L2 cache interrupts is

    interrupts = <1>, <3>, <4>, <2>;

Fixes: e35b07a7df9b ("riscv: dts: microchip: mpfs: Group tuples in interrupt properties")
Fixes: 0fa6107eca41 ("RISC-V: Initial DTS for Microchip ICICLE board")
Cc: Conor Dooley <conor.dooley at microchip.com>
Cc: stable at vger.kernel.org
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 arch/riscv/boot/dts/microchip/mpfs.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/boot/dts/microchip/mpfs.dtsi b/arch/riscv/boot/dts/microchip/mpfs.dtsi
index 496d3b7642bd..ec1de6344be9 100644
--- a/arch/riscv/boot/dts/microchip/mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/mpfs.dtsi
@@ -169,7 +169,7 @@ cctrllr: cache-controller at 2010000 {
 			cache-size = <2097152>;
 			cache-unified;
 			interrupt-parent = <&plic>;
-			interrupts = <1>, <2>, <3>;
+			interrupts = <1>, <3>, <4>, <2>;
 		};
 
 		clint: clint at 2000000 {
-- 
2.36.1




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