linux-kernel - Pine64 Pinebook Pro (rk3399): debugfs: File ':interrupt-controller@...00000' in directory 'domains' already present!

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Date:   Thu, 15 Dec 2022 16:03:11 +0100
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Pine64 Pinebook Pro (rk3399): debugfs: File
 ':interrupt-controller@...00000' in directory 'domains' already present!

Dear Linux folks,

Starting Manjaro ARM on a Pine64 Pinebook Pro, Linux 6.0.7 logs:

```
[    0.000000] Linux version 6.0.7-2-MANJARO-ARM 
(builduser@...mjr-build-lon-xlarge) (gcc (GCC) 12.1.0, GNU ld (GNU 
Binutils) 2.38) #1 SMP PREEMPT Sun Nov 6 23:15:01 UTC 2022
[…]
[    0.406267] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.406973] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.406992] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.406999] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407007] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407014] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407024] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407032] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407039] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407047] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407054] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407061] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407068] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407075] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
[    0.407082] debugfs: File ':interrupt-controller@...00000' in 
directory 'domains' already present!
```

I found a corresponding definition in the devicetree 
`arch/arm64/boot/dts/rockchip/rk3399.dtsi`:

```
         gic: interrupt-controller@...00000 {
                 compatible = "arm,gic-v3";
                 #interrupt-cells = <4>;
                 #address-cells = <2>;
                 #size-cells = <2>;
                 ranges;
                 interrupt-controller;

                 reg = <0x0 0xfee00000 0 0x10000>, /* GICD */
                       <0x0 0xfef00000 0 0xc0000>, /* GICR */
                       <0x0 0xfff00000 0 0x10000>, /* GICC */
                       <0x0 0xfff10000 0 0x10000>, /* GICH */
                       <0x0 0xfff20000 0 0x10000>; /* GICV */
                 interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH 0>;
                 its: interrupt-controller@...20000 {
                         compatible = "arm,gic-v3-its";
                         msi-controller;
                         #msi-cells = <1>;
                         reg = <0x0 0xfee20000 0x0 0x20000>;
                 };

                 ppi-partitions {
                         ppi_cluster0: interrupt-partition-0 {
                                 affinity = <&cpu_l0 &cpu_l1 &cpu_l2 
&cpu_l3>;
                         };

                         ppi_cluster1: interrupt-partition-1 {
                                 affinity = <&cpu_b0 &cpu_b1>;
                         };
                 };
         };
```

Kind regards,

Paul