[PATCH v3 0/9] LoongArch: DTS: Fix dtbs_check warnings

[PATCH v3 0/9] LoongArch: DTS: Fix dtbs_check warnings

[Binbin Zhou]

Hi all:

As Krzysztof pointed out in the OSS talk, LoongArch only has three DTS,
but has a bunch of warnings. The patchset attempts to fix them.

Patch-1 and patch-5 are taken from Yao[1],thanks a lot!

[1]: https://lore.kernel.org/all/20251209140006.54821-1-me@ziyao.cc/

Test environment and results: 

Package                   Version
------------------------- -----------
attrs                     25.4.0
dtschema                  2025.12
jsonschema                4.25.1
jsonschema-specifications 2025.9.1
pip                       25.3
pylibfdt                  1.7.2.post1
referencing               0.37.0
rfc3987                   1.3.8
rpds-py                   0.30.0
ruamel.yaml               0.18.16
ruamel.yaml.clib          0.2.15
typing_extensions         4.15.0

---------
make dtbs_check W=1

  SYNC    include/config/auto.conf
  UPD     include/config/kernel.release
  DTC [C] arch/loongarch/boot/dts/loongson-2k0500-ref.dtb
  DTC [C] arch/loongarch/boot/dts/loongson-2k1000-ref.dtb
  DTC [C] arch/loongarch/boot/dts/loongson-2k2000-ref.dtb

========
V3:
patch (2/9)(3/9):
 - New patches, document `#address-cells` property;

patch (4/9):
 - Rewrite commit title and message;
 - Remove unneeded changes, leaving only the `#address-cells`
   value set.

patch (6/9):
 - Set `#address-cells = <0>` to liointc node;

patch (8/9):
 - Set `#address-cells = <0>` to liointc and eiointc node;

Link to V2:
https://lore.kernel.org/all/cover.1766037997.git.zhoubinbin@loongson.cn/


V2:
patch(1/7)(3/7):
 - Add myself s-o-b;

patch(2/7):
 - Define the value of #address-cells to 0;

patch(5/7):
 - Set `#address-cells = <0>` to liointc0 node;

patch(7/7):
 - Fix commit msg about `i2c@address`;
 - Add Reviewed-by tag form Krzysztof, thanks.

Link to V1:
https://lore.kernel.org/all/cover.1765778124.git.zhoubinbin@loongson.cn/

Binbin Zhou (7):
  dt-bindings: interrupt-controller: loongson,eiointc: Document
    address-cells
  dt-bindings: interrupt-controller: loongson,liointc: Document
    address-cells
  dt-bindings: interrupt-controller: loongson,pch-pic: Document
    address-cells
  LoongArch: dts: loongson-2k0500: Add default interrupt controller
    address cells
  LoongArch: dts: loongson-2k1000: Add default Local I/O interrupt
    controller address cells
  LoongArch: dts: loongson-2k2000: Add default interrupt controller
    address cells
  LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names

Yao Zi (2):
  dt-bindings: PCI: loongson: Document msi-parent property
  LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended

 .../loongson,eiointc.yaml                     |  3 ++
 .../loongson,liointc.yaml                     |  3 ++
 .../loongson,pch-pic.yaml                     |  3 ++
 .../devicetree/bindings/pci/loongson.yaml     |  2 ++
 arch/loongarch/boot/dts/loongson-2k0500.dtsi  |  3 ++
 arch/loongarch/boot/dts/loongson-2k1000.dtsi  | 31 +++++++---------
 arch/loongarch/boot/dts/loongson-2k2000.dtsi  | 35 ++++++++-----------
 7 files changed, 42 insertions(+), 38 deletions(-)


base-commit: e8a259e82c7c3ee53e933bb238366ec2ba0bc892
-- 
2.47.3

[PATCH v3 1/9] dt-bindings: PCI: loongson: Document msi-parent property

[Binbin Zhou]

From: Yao Zi <me@ziyao.cc>

Loongson PCI controllers found in LS2K1000/2000 SoCs
(loongson,ls2k-pci), 7A1000/2000 bridge chips (loongson,ls7a-pci), and
RS780E bridge chips (loongson,rs780e-pci) all have their paired MSI
controllers.

Though only the one in LS2K2000 SoC is described in devicetree, we
should document the property for all variants. For the same reason, it
isn't marked as required for now.

Fixes: 83e757ecfd5d ("dt-bindings: Document Loongson PCI Host Controller")
Signed-off-by: Yao Zi <me@ziyao.cc>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 Documentation/devicetree/bindings/pci/loongson.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
index e5bba63aa947..26e77218b901 100644
--- a/Documentation/devicetree/bindings/pci/loongson.yaml
+++ b/Documentation/devicetree/bindings/pci/loongson.yaml
@@ -32,6 +32,8 @@ properties:
     minItems: 1
     maxItems: 3
 
+  msi-parent: true
+
 required:
   - compatible
   - reg
-- 
2.47.3

[PATCH v3 2/9] dt-bindings: interrupt-controller: loongson,eiointc: Document address-cells

[Binbin Zhou]

The Loongson Extend I/O interrupt controller can be referenced in
interrupt-map properties (e.g. in
arch/loongarch/boot/dts/loongson-2k0500.dtsi), thus the nodes should
have address-cells property.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 .../bindings/interrupt-controller/loongson,eiointc.yaml        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml
index 393c128a41d8..3c03d90058ed 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,eiointc.yaml
@@ -29,6 +29,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  '#address-cells':
+    const: 0
+
   interrupt-controller: true
 
   '#interrupt-cells':
-- 
2.47.3

[PATCH v3 3/9] dt-bindings: interrupt-controller: loongson,liointc: Document address-cells

[Binbin Zhou]

The Loongson local I/O interrupt controller can be referenced in
interrupt-map properties (e.g. in
arch/loongarch/boot/dts/loongson-2k1000.dtsi), thus the nodes should
have address-cells property.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 .../bindings/interrupt-controller/loongson,liointc.yaml        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,liointc.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,liointc.yaml
index f63b23f48d8e..9f532cb11d0c 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/loongson,liointc.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,liointc.yaml
@@ -40,6 +40,9 @@ properties:
       - const: isr1
     minItems: 2
 
+  '#address-cells':
+    const: 0
+
   interrupt-controller: true
 
   interrupts:
-- 
2.47.3

[PATCH v3 4/9] dt-bindings: interrupt-controller: loongson,pch-pic: Document address-cells

[Binbin Zhou]

The Loongson PCH interrupt controller can be referenced in interrupt-map
properties (e.g. in arch/loongarch/boot/dts/loongson-2k2000.dtsi), thus
the nodes should have address-cells property.

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 .../bindings/interrupt-controller/loongson,pch-pic.yaml        | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml
index b7bc5cb1dff2..eee10abe9e48 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-pic.yaml
@@ -29,6 +29,9 @@ properties:
     minimum: 0
     maximum: 192
 
+  '#address-cells':
+    const: 0
+
   interrupt-controller: true
 
   '#interrupt-cells':
-- 
2.47.3

[PATCH v3 5/9] LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended

[Binbin Zhou]

From: Yao Zi <me@ziyao.cc>

SoC integrated peripherals on LS2K1000 and LS2K2000 could be discovered
as PCI devices, but require sideband interrupts to function, which are
previously described by interrupts and interrupt-parent properties.

However, pci/pci-device.yaml allows interrupts property to only specify
PCI INTx interrupts, not sideband ones. Convert these devices to use
interrupt-extended property, which describes sideband interrupts used by
PCI devices since dt-schema commit e6ea659d2baa ("schemas: pci-device:
Allow interrupts-extended for sideband interrupts"), eliminating
dtbs_check warnings.

Fixes: 30a5532a3206 ("LoongArch: dts: DeviceTree for Loongson-2K1000")
Signed-off-by: Yao Zi <me@ziyao.cc>
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 arch/loongarch/boot/dts/loongson-2k1000.dtsi | 25 ++++++---------
 arch/loongarch/boot/dts/loongson-2k2000.dtsi | 32 ++++++++------------
 2 files changed, 21 insertions(+), 36 deletions(-)

diff --git a/arch/loongarch/boot/dts/loongson-2k1000.dtsi b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
index 60ab425f793f..eee06b84951c 100644
--- a/arch/loongarch/boot/dts/loongson-2k1000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
@@ -437,54 +437,47 @@ pcie@1a000000 {
 
 			gmac0: ethernet@3,0 {
 				reg = <0x1800 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc0>;
-				interrupts = <12 IRQ_TYPE_LEVEL_HIGH>,
-					     <13 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc0 12 IRQ_TYPE_LEVEL_HIGH>,
+						      <&liointc0 13 IRQ_TYPE_LEVEL_HIGH>;
 				interrupt-names = "macirq", "eth_lpi";
 				status = "disabled";
 			};
 
 			gmac1: ethernet@3,1 {
 				reg = <0x1900 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc0>;
-				interrupts = <14 IRQ_TYPE_LEVEL_HIGH>,
-					     <15 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc0 14 IRQ_TYPE_LEVEL_HIGH>,
+						      <&liointc0 15 IRQ_TYPE_LEVEL_HIGH>;
 				interrupt-names = "macirq", "eth_lpi";
 				status = "disabled";
 			};
 
 			ehci0: usb@4,1 {
 				reg = <0x2100 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc1>;
-				interrupts = <18 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc1 18 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			ohci0: usb@4,2 {
 				reg = <0x2200 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc1>;
-				interrupts = <19 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc1 19 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			display@6,0 {
 				reg = <0x3000 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc0>;
-				interrupts = <28 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc0 28 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			hda@7,0 {
 				reg = <0x3800 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc0>;
-				interrupts = <4 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc0 4 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			sata: sata@8,0 {
 				reg = <0x4000 0x0 0x0 0x0 0x0>;
-				interrupt-parent = <&liointc0>;
-				interrupts = <19 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&liointc0 19 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
diff --git a/arch/loongarch/boot/dts/loongson-2k2000.dtsi b/arch/loongarch/boot/dts/loongson-2k2000.dtsi
index 6c77b86ee06c..87c45f1f7cc7 100644
--- a/arch/loongarch/boot/dts/loongson-2k2000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k2000.dtsi
@@ -291,65 +291,57 @@ pcie@1a000000 {
 
 			gmac0: ethernet@3,0 {
 				reg = <0x1800 0x0 0x0 0x0 0x0>;
-				interrupts = <12 IRQ_TYPE_LEVEL_HIGH>,
-					     <13 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&pic 12 IRQ_TYPE_LEVEL_HIGH>,
+						      <&pic 13 IRQ_TYPE_LEVEL_HIGH>;
 				interrupt-names = "macirq", "eth_lpi";
-				interrupt-parent = <&pic>;
 				status = "disabled";
 			};
 
 			gmac1: ethernet@3,1 {
 				reg = <0x1900 0x0 0x0 0x0 0x0>;
-				interrupts = <14 IRQ_TYPE_LEVEL_HIGH>,
-					     <15 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&pic 14 IRQ_TYPE_LEVEL_HIGH>,
+						      <&pic 15 IRQ_TYPE_LEVEL_HIGH>;
 				interrupt-names = "macirq", "eth_lpi";
-				interrupt-parent = <&pic>;
 				status = "disabled";
 			};
 
 			gmac2: ethernet@3,2 {
 				reg = <0x1a00 0x0 0x0 0x0 0x0>;
-				interrupts = <17 IRQ_TYPE_LEVEL_HIGH>,
-					     <18 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&pic 17 IRQ_TYPE_LEVEL_HIGH>,
+						      <&pic 18 IRQ_TYPE_LEVEL_HIGH>;
 				interrupt-names = "macirq", "eth_lpi";
-				interrupt-parent = <&pic>;
 				status = "disabled";
 			};
 
 			xhci0: usb@4,0 {
 				reg = <0x2000 0x0 0x0 0x0 0x0>;
-				interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
-				interrupt-parent = <&pic>;
+				interrupts-extended = <&pic 48 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			xhci1: usb@19,0 {
 				reg = <0xc800 0x0 0x0 0x0 0x0>;
-				interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
-				interrupt-parent = <&pic>;
+				interrupts-extended = <&pic 22 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			display@6,1 {
 				reg = <0x3100 0x0 0x0 0x0 0x0>;
-				interrupts = <28 IRQ_TYPE_LEVEL_HIGH>;
-				interrupt-parent = <&pic>;
+				interrupts-extended = <&pic 28 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
 			i2s@7,0 {
 				reg = <0x3800 0x0 0x0 0x0 0x0>;
-				interrupts = <78 IRQ_TYPE_LEVEL_HIGH>,
-					     <79 IRQ_TYPE_LEVEL_HIGH>;
+				interrupts-extended = <&pic 78 IRQ_TYPE_LEVEL_HIGH>,
+						      <&pic 79 IRQ_TYPE_LEVEL_HIGH>;
 				interrupt-names = "tx", "rx";
-				interrupt-parent = <&pic>;
 				status = "disabled";
 			};
 
 			sata: sata@8,0 {
 				reg = <0x4000 0x0 0x0 0x0 0x0>;
-				interrupts = <16 IRQ_TYPE_LEVEL_HIGH>;
-				interrupt-parent = <&pic>;
+				interrupts-extended = <&pic 16 IRQ_TYPE_LEVEL_HIGH>;
 				status = "disabled";
 			};
 
-- 
2.47.3

[PATCH v3 6/9] LoongArch: dts: loongson-2k0500: Add default interrupt controller address cells

[Binbin Zhou]

Add missing address-cells 0 to the extend I/O and Local I/O interrupt
controller node to silence W=1 warning:

  loongson-2k0500.dtsi:513.5-51: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@0,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@1fe11600, using 0 as fallback

Value '0' is correct because:
1. The extend I/O and Local I/O interrupt controller do not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 arch/loongarch/boot/dts/loongson-2k0500.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/loongarch/boot/dts/loongson-2k0500.dtsi b/arch/loongarch/boot/dts/loongson-2k0500.dtsi
index 357de4ca7555..e759fae77dcf 100644
--- a/arch/loongarch/boot/dts/loongson-2k0500.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k0500.dtsi
@@ -131,6 +131,7 @@ liointc0: interrupt-controller@1fe11400 {
 			reg-names = "main", "isr0";
 
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <2>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <2>;
@@ -149,6 +150,7 @@ liointc1: interrupt-controller@1fe11440 {
 			reg-names = "main", "isr0";
 
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <2>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <4>;
@@ -164,6 +166,7 @@ eiointc: interrupt-controller@1fe11600 {
 			compatible = "loongson,ls2k0500-eiointc";
 			reg = <0x0 0x1fe11600 0x0 0xea00>;
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <1>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <3>;
-- 
2.47.3

[PATCH v3 7/9] LoongArch: dts: loongson-2k1000: Add default Local I/O interrupt controller address cells

[Binbin Zhou]

Add missing address-cells 0 to the local I/O interrupt controller node
to silence W=1 warning:

  loongson-2k1000.dtsi:498.5-55: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@9,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@1fe01440, using 0 as fallback

Value '0' is correct because:
1. The local I/O interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 arch/loongarch/boot/dts/loongson-2k1000.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/loongarch/boot/dts/loongson-2k1000.dtsi b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
index eee06b84951c..440a8f3c01f4 100644
--- a/arch/loongarch/boot/dts/loongson-2k1000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
@@ -114,6 +114,7 @@ liointc0: interrupt-controller@1fe01400 {
 			      <0x0 0x1fe01140 0x0 0x8>;
 			reg-names = "main", "isr0", "isr1";
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <2>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <2>;
@@ -131,6 +132,7 @@ liointc1: interrupt-controller@1fe01440 {
 			      <0x0 0x1fe01148 0x0 0x8>;
 			reg-names = "main", "isr0", "isr1";
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <2>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <3>;
-- 
2.47.3

[PATCH v3 8/9] LoongArch: dts: loongson-2k2000: Add default interrupt controller address cells

[Binbin Zhou]

Add missing address-cells 0 to the PCH/Local I/O/Extend I/O Interrupt
Controller node to silence W=1 warning:

  loongson-2k2000.dtsi:364.5-49: Warning (interrupt_map): /bus@10000000/pcie@1a000000/pcie@9,0:interrupt-map:
    Missing property '#address-cells' in node /bus@10000000/interrupt-controller@10000000, using 0 as fallback

Value '0' is correct because:
1. The PCH interrupt controller does not have children,
2. interrupt-map property (in PCI node) consists of five components and
   the fourth component "parent unit address", which size is defined by
   '#address-cells' of the node pointed to by the interrupt-parent
   component, is not used (=0)

Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
---
 arch/loongarch/boot/dts/loongson-2k2000.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/loongarch/boot/dts/loongson-2k2000.dtsi b/arch/loongarch/boot/dts/loongson-2k2000.dtsi
index 87c45f1f7cc7..3678c084adf7 100644
--- a/arch/loongarch/boot/dts/loongson-2k2000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k2000.dtsi
@@ -126,6 +126,7 @@ liointc: interrupt-controller@1fe01400 {
 			reg = <0x0 0x1fe01400 0x0 0x64>;
 
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <2>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <2>;
@@ -140,6 +141,7 @@ eiointc: interrupt-controller@1fe01600 {
 			compatible = "loongson,ls2k2000-eiointc";
 			reg = <0x0 0x1fe01600 0x0 0xea00>;
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <1>;
 			interrupt-parent = <&cpuintc>;
 			interrupts = <3>;
@@ -149,6 +151,7 @@ pic: interrupt-controller@10000000 {
 			compatible = "loongson,pch-pic-1.0";
 			reg = <0x0 0x10000000 0x0 0x400>;
 			interrupt-controller;
+			#address-cells = <0>;
 			#interrupt-cells = <2>;
 			loongson,pic-base-vec = <0>;
 			interrupt-parent = <&eiointc>;
-- 
2.47.3

[PATCH v3 9/9] LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names

[Binbin Zhou]

From: Binbin Zhou <zhoubb.aaron@gmail.com>

The binding wants the node to be named "i2c-number", but those are named
"i2c-gpio-number" instead.

Rename those to i2c-0, i2c-1 to adhere to the binding and suppress
dtbs_check warnings.

Signed-off-by: Binbin Zhou <zhoubb.aaron@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
---
 arch/loongarch/boot/dts/loongson-2k1000.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/loongarch/boot/dts/loongson-2k1000.dtsi b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
index 440a8f3c01f4..be4f7d119660 100644
--- a/arch/loongarch/boot/dts/loongson-2k1000.dtsi
+++ b/arch/loongarch/boot/dts/loongson-2k1000.dtsi
@@ -46,7 +46,7 @@ cpuintc: interrupt-controller {
 	};
 
 	/* i2c of the dvi eeprom edid */
-	i2c-gpio-0 {
+	i2c-0 {
 		compatible = "i2c-gpio";
 		scl-gpios = <&gpio0 0 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 		sda-gpios = <&gpio0 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
@@ -57,7 +57,7 @@ i2c-gpio-0 {
 	};
 
 	/* i2c of the eeprom edid */
-	i2c-gpio-1 {
+	i2c-1 {
 		compatible = "i2c-gpio";
 		scl-gpios = <&gpio0 33 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
 		sda-gpios = <&gpio0 32 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
-- 
2.47.3

Re: [PATCH v3 3/9] dt-bindings: interrupt-controller: loongson,liointc: Document address-cells

[Rob Herring (Arm)]

On Sun, 04 Jan 2026 14:41:13 +0800, Binbin Zhou wrote:
> The Loongson local I/O interrupt controller can be referenced in
> interrupt-map properties (e.g. in
> arch/loongarch/boot/dts/loongson-2k1000.dtsi), thus the nodes should
> have address-cells property.
> 
> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
> ---
>  .../bindings/interrupt-controller/loongson,liointc.yaml        | 3 +++
>  1 file changed, 3 insertions(+)
> 

Applied, thanks!

Re: [PATCH v3 2/9] dt-bindings: interrupt-controller: loongson,eiointc: Document address-cells

[Rob Herring (Arm)]

On Sun, 04 Jan 2026 14:41:12 +0800, Binbin Zhou wrote:
> The Loongson Extend I/O interrupt controller can be referenced in
> interrupt-map properties (e.g. in
> arch/loongarch/boot/dts/loongson-2k0500.dtsi), thus the nodes should
> have address-cells property.
> 
> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
> ---
>  .../bindings/interrupt-controller/loongson,eiointc.yaml        | 3 +++
>  1 file changed, 3 insertions(+)
> 

Applied, thanks!

Re: [PATCH v3 4/9] dt-bindings: interrupt-controller: loongson,pch-pic: Document address-cells

[Rob Herring (Arm)]

On Sun, 04 Jan 2026 14:41:49 +0800, Binbin Zhou wrote:
> The Loongson PCH interrupt controller can be referenced in interrupt-map
> properties (e.g. in arch/loongarch/boot/dts/loongson-2k2000.dtsi), thus
> the nodes should have address-cells property.
> 
> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
> ---
>  .../bindings/interrupt-controller/loongson,pch-pic.yaml        | 3 +++
>  1 file changed, 3 insertions(+)
> 

Applied, thanks!

Re: [PATCH v3 1/9] dt-bindings: PCI: loongson: Document msi-parent property

[Huacai Chen]

Hi, Rob,

On Sun, Jan 4, 2026 at 2:41 PM Binbin Zhou <zhoubinbin@loongson.cn> wrote:
>
> From: Yao Zi <me@ziyao.cc>
>
> Loongson PCI controllers found in LS2K1000/2000 SoCs
> (loongson,ls2k-pci), 7A1000/2000 bridge chips (loongson,ls7a-pci), and
> RS780E bridge chips (loongson,rs780e-pci) all have their paired MSI
> controllers.
>
> Though only the one in LS2K2000 SoC is described in devicetree, we
> should document the property for all variants. For the same reason, it
> isn't marked as required for now.
>
> Fixes: 83e757ecfd5d ("dt-bindings: Document Loongson PCI Host Controller")
> Signed-off-by: Yao Zi <me@ziyao.cc>
> Acked-by: Rob Herring (Arm) <robh@kernel.org>
I found that you picked Patch2~Patch4 but left this one. Why?

On the other hand, Binbin said that if the first 4 and the last 5 go
to different trees, then there are still build warnings in separate
repos. So if possible, please also drop Patch2~Patch4 and I will take
the whole series to the loongarch tree. Thanks.

Huacai

> Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
> ---
>  Documentation/devicetree/bindings/pci/loongson.yaml | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/pci/loongson.yaml b/Documentation/devicetree/bindings/pci/loongson.yaml
> index e5bba63aa947..26e77218b901 100644
> --- a/Documentation/devicetree/bindings/pci/loongson.yaml
> +++ b/Documentation/devicetree/bindings/pci/loongson.yaml
> @@ -32,6 +32,8 @@ properties:
>      minItems: 1
>      maxItems: 3
>
> +  msi-parent: true
> +
>  required:
>    - compatible
>    - reg
> --
> 2.47.3
>
>

Re: [PATCH v3 0/9] LoongArch: DTS: Fix dtbs_check warnings

[Huacai Chen]

Applied the last 5 patches, thanks.

Huacai

On Sun, Jan 4, 2026 at 2:41 PM Binbin Zhou <zhoubinbin@loongson.cn> wrote:
>
> Hi all:
>
> As Krzysztof pointed out in the OSS talk, LoongArch only has three DTS,
> but has a bunch of warnings. The patchset attempts to fix them.
>
> Patch-1 and patch-5 are taken from Yao[1],thanks a lot!
>
> [1]: https://lore.kernel.org/all/20251209140006.54821-1-me@ziyao.cc/
>
> Test environment and results:
>
> Package                   Version
> ------------------------- -----------
> attrs                     25.4.0
> dtschema                  2025.12
> jsonschema                4.25.1
> jsonschema-specifications 2025.9.1
> pip                       25.3
> pylibfdt                  1.7.2.post1
> referencing               0.37.0
> rfc3987                   1.3.8
> rpds-py                   0.30.0
> ruamel.yaml               0.18.16
> ruamel.yaml.clib          0.2.15
> typing_extensions         4.15.0
>
> ---------
> make dtbs_check W=1
>
>   SYNC    include/config/auto.conf
>   UPD     include/config/kernel.release
>   DTC [C] arch/loongarch/boot/dts/loongson-2k0500-ref.dtb
>   DTC [C] arch/loongarch/boot/dts/loongson-2k1000-ref.dtb
>   DTC [C] arch/loongarch/boot/dts/loongson-2k2000-ref.dtb
>
> ========
> V3:
> patch (2/9)(3/9):
>  - New patches, document `#address-cells` property;
>
> patch (4/9):
>  - Rewrite commit title and message;
>  - Remove unneeded changes, leaving only the `#address-cells`
>    value set.
>
> patch (6/9):
>  - Set `#address-cells = <0>` to liointc node;
>
> patch (8/9):
>  - Set `#address-cells = <0>` to liointc and eiointc node;
>
> Link to V2:
> https://lore.kernel.org/all/cover.1766037997.git.zhoubinbin@loongson.cn/
>
>
> V2:
> patch(1/7)(3/7):
>  - Add myself s-o-b;
>
> patch(2/7):
>  - Define the value of #address-cells to 0;
>
> patch(5/7):
>  - Set `#address-cells = <0>` to liointc0 node;
>
> patch(7/7):
>  - Fix commit msg about `i2c@address`;
>  - Add Reviewed-by tag form Krzysztof, thanks.
>
> Link to V1:
> https://lore.kernel.org/all/cover.1765778124.git.zhoubinbin@loongson.cn/
>
> Binbin Zhou (7):
>   dt-bindings: interrupt-controller: loongson,eiointc: Document
>     address-cells
>   dt-bindings: interrupt-controller: loongson,liointc: Document
>     address-cells
>   dt-bindings: interrupt-controller: loongson,pch-pic: Document
>     address-cells
>   LoongArch: dts: loongson-2k0500: Add default interrupt controller
>     address cells
>   LoongArch: dts: loongson-2k1000: Add default Local I/O interrupt
>     controller address cells
>   LoongArch: dts: loongson-2k2000: Add default interrupt controller
>     address cells
>   LoongArch: dts: loongson-2k1000: Fix i2c-gpio node names
>
> Yao Zi (2):
>   dt-bindings: PCI: loongson: Document msi-parent property
>   LoongArch: dts: Describe PCI sideband IRQ through interrupt-extended
>
>  .../loongson,eiointc.yaml                     |  3 ++
>  .../loongson,liointc.yaml                     |  3 ++
>  .../loongson,pch-pic.yaml                     |  3 ++
>  .../devicetree/bindings/pci/loongson.yaml     |  2 ++
>  arch/loongarch/boot/dts/loongson-2k0500.dtsi  |  3 ++
>  arch/loongarch/boot/dts/loongson-2k1000.dtsi  | 31 +++++++---------
>  arch/loongarch/boot/dts/loongson-2k2000.dtsi  | 35 ++++++++-----------
>  7 files changed, 42 insertions(+), 38 deletions(-)
>
>
> base-commit: e8a259e82c7c3ee53e933bb238366ec2ba0bc892
> --
> 2.47.3
>
>