[PATCH 10/31 v3] irqchip: ixp4xx: Add DT bindings

[PATCH 10/31 v3] irqchip: ixp4xx: Add DT bindings

[Linus Walleij]

This adds device tree bindings for the IXP4xx interrupt
controller. It's a standard 2-cell controller.

Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Dropped oneOf on compatible
- Dropped description on reg, set maxItems 1
- Drop the description on interrupt-cells
- Collect Rob's review tag
ChangeLog v1->v2:
- Converted to use JSON yaml schema, why not.
- Not keeping Rob's ACK because I think he wants to take
  a second look.
---
 .../intel,ixp4xx-interrupt.yaml               | 54 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml

diff --git a/Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml b/Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
new file mode 100644
index 000000000000..bae10e261fa9
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2018 Linaro Ltd.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/interrupt/intel-ixp4xx-interrupt.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Intel IXP4xx XScale Networking Processors Interrupt Controller
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |
+  This interrupt controller is found in the Intel IXP4xx processors.
+  Some processors have 32 interrupts, some have up to 64 interrupts.
+  The exact number of interrupts is determined from the compatible
+  string.
+
+  The distinct IXP4xx families with different interrupt controller
+  variations are IXP42x, IXP43x, IXP45x and IXP46x. Those four
+  families were the only ones to reach the developer and consumer
+  market.
+
+properties:
+  compatible:
+    items:
+      - enum:
+        - intel,ixp42x-interrupt
+        - intel,ixp43x-interrupt
+        - intel,ixp45x-interrupt
+        - intel,ixp46x-interrupt
+
+  reg:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  '#interrupt-cells':
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - interrupt-controller
+  - '#interrupt-cells'
+
+examples:
+  - |
+    intcon: interrupt-controller@c8003000 {
+        compatible = "intel,ixp43x-interrupt";
+        reg = <0xc8003000 0x100>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index bc918f318797..ad05704fbd68 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1690,6 +1690,7 @@ M:	Imre Kaloz <kaloz@openwrt.org>
 M:	Krzysztof Halasa <khalasa@piap.pl>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
+F:	Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
 F:	arch/arm/mach-ixp4xx/
 F:	drivers/clocksource/timer-ixp4xx.c
 F:	drivers/gpio/gpio-ixp4xx.c
-- 
2.20.1

[PATCH 12/31 v3] clocksource/drivers/ixp4xx: Add DT bindings

[Linus Walleij]

This adds device tree bindings for the Intel IXP4xx
timers.

Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Collect Rob's Review tag.
ChangeLog v1->v2:
- Switch to JSON YAML schema, why not.
- Not collecting any review tags as this changed a bit.
---
 .../bindings/timer/intel,ixp4xx-timer.yaml    | 42 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml

diff --git a/Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml b/Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
new file mode 100644
index 000000000000..a36a0746c056
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2018 Linaro Ltd.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/timer/intel-ixp4xx-timer.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Intel IXP4xx XScale Networking Processors Timers
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: This timer is found in the Intel IXP4xx processors.
+
+properties:
+  compatible:
+    items:
+      - const: intel,ixp4xx-timer
+
+  reg:
+    description: Should contain registers location and length
+
+  interrupts:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description: Timer 1 interrupt
+      - description: Timer 2 interrupt
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    timer@c8005000 {
+        compatible = "intel,ixp4xx-timer";
+        reg = <0xc8005000 0x100>;
+        interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index ad05704fbd68..78f50505a313 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1691,6 +1691,7 @@ M:	Krzysztof Halasa <khalasa@piap.pl>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
+F:	Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
 F:	arch/arm/mach-ixp4xx/
 F:	drivers/clocksource/timer-ixp4xx.c
 F:	drivers/gpio/gpio-ixp4xx.c
-- 
2.20.1

[PATCH 14/31 v3] gpio: ixp4xx: Add DT bindings

[Linus Walleij]

This adds DT bindings for the IXP4xx GPIO controller.

Cc: devicetree@vger.kernel.org
Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Rebase on v5.1-rc1
ChangeLog v1->v2:
- Collect Bartosz and Rob's review tags.
---
 MAINTAINERS | 1 +
 1 file changed, 1 insertion(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 78f50505a313..0a8999c09764 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1690,6 +1690,7 @@ M:	Imre Kaloz <kaloz@openwrt.org>
 M:	Krzysztof Halasa <khalasa@piap.pl>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
+F:	Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt
 F:	Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
 F:	Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
 F:	arch/arm/mach-ixp4xx/
-- 
2.20.1

[PATCH 16/31 v3] ARM: ixp4xx: Add DT bindings

[Linus Walleij]

This adds initial device tree bindings for the IXP4xx machines.
This time I tried something wild and crazy and try to make proper
JSON-style YAML bindings for the top level.

Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Rebased on v5.1-rc1
ChangeLog v1->v2:
- Fix up the GW2358 compatible string.
---
 .../devicetree/bindings/arm/intel-ixp4xx.yaml | 22 +++++++++++++++++++
 MAINTAINERS                                   |  1 +
 2 files changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml

diff --git a/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml b/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
new file mode 100644
index 000000000000..f4f7451e5e8a
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/intel-ixp4xx.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel IXP4xx Device Tree Bindings
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - linksys,nslu2
+          - const: intel,ixp42x
+      - items:
+          - enum:
+              - gateworks,gw2358
+          - const: intel,ixp43x
diff --git a/MAINTAINERS b/MAINTAINERS
index 0a8999c09764..49052de0567b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1690,6 +1690,7 @@ M:	Imre Kaloz <kaloz@openwrt.org>
 M:	Krzysztof Halasa <khalasa@piap.pl>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
+F:	Documentation/devicetree/bindings/arm/intel-ixp4xx.yaml
 F:	Documentation/devicetree/bindings/gpio/intel,ixp4xx-gpio.txt
 F:	Documentation/devicetree/bindings/interrupt-controller/intel,ixp4xx-interrupt.yaml
 F:	Documentation/devicetree/bindings/timer/intel,ixp4xx-timer.yaml
-- 
2.20.1

[PATCH 27/31 v3] soc: ixp4xx: Add DT bindings for IXP4xx NPE

[Linus Walleij]

This adds DT bindings for the Intel IXP4xx Network Processing
Engine (NPE). These are three firmware-executing units found in
the IXP4xx SoC. These bindings use YAML.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Rebased on v5.1-rc1
---
 ...ntel,ixp4xx-network-processing-engine.yaml | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/intel,ixp4xx-network-processing-engine.yaml

diff --git a/Documentation/devicetree/bindings/firmware/intel,ixp4xx-network-processing-engine.yaml b/Documentation/devicetree/bindings/firmware/intel,ixp4xx-network-processing-engine.yaml
new file mode 100644
index 000000000000..8cb136c376fb
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/intel,ixp4xx-network-processing-engine.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 Linaro Ltd.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/firmware/intel-ixp4xx-network-processing-engine.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Intel IXP4xx Network Processing Engine
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |
+  On the IXP4xx SoCs, the Network Processing Engine (NPE) is a small
+  processor that can load a firmware to perform offloading of networking
+  and crypto tasks. It also manages the MDIO bus to the ethernet PHYs
+  on the IXP4xx platform. All IXP4xx platforms have three NPEs at
+  consecutive memory locations. They are all included in the same
+  device node since they are not independent of each other.
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - const: intel,ixp4xx-network-processing-engine
+
+  reg:
+    minItems: 3
+    maxItems: 3
+    items:
+      - description: NPE0 register range
+      - description: NPE1 register range
+      - description: NPE2 register range
+
+required:
+  - compatible
+  - reg
+
+examples:
+  - |
+    npe@c8006000 {
+         compatible = "intel,ixp4xx-network-processing-engine";
+         reg = <0xc8006000 0x1000>, <0xc8007000 0x1000>, <0xc8008000 0x1000>;
+    };
-- 
2.20.1

[PATCH 29/31 v3] soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr

[Linus Walleij]

This adds device tree bindings for the Intel IXP4xx AHB
Queue Manager.

Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v2->v3:
- Rebased on v5.1-rc1
- Drop oneOf in compatible, just list items.
- Drop description on reg, just use maxItems: 1
- Set '#queue-cells' as required
---
 .../misc/intel,ixp4xx-queue-manager.yaml      | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml

diff --git a/Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml b/Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml
new file mode 100644
index 000000000000..346707936a2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 Linaro Ltd.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/misc/intel-ixp4xx-ahb-queue-manager.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Intel IXP4xx AHB Queue Manager
+
+maintainers:
+  - Linus Walleij <linus.walleij@linaro.org>
+
+description: |
+  The IXP4xx AHB Queue Manager maintains queues as circular buffers in
+  an 8KB embedded SRAM along with hardware pointers. It is used by both
+  the XScale processor and the NPEs (Network Processing Units) in the
+  IXP4xx for accelerating queues, especially for networking. Clients pick
+  queues from the queue manager with foo-queue = <&qmgr N> where the
+  &qmgr is a phandle to the queue manager and N is the queue resource
+  number. The queue resources available and their specific purpose
+  on a certain IXP4xx system will vary.
+
+properties:
+  compatible:
+    items:
+      - const: intel,ixp4xx-ahb-queue-manager
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: Interrupt for queues 0-31
+      - description: Interrupt for queues 32-63
+
+  '#queue-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - '#queue-cells'
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    qmgr: queue-manager@60000000 {
+         compatible = "intel,ixp4xx-ahb-queue-manager";
+         reg = <0x60000000 0x4000>;
+         interrupts = <3 IRQ_TYPE_LEVEL_HIGH>, <4 IRQ_TYPE_LEVEL_HIGH>;
+         #queue-cells = <1>;
+    };
-- 
2.20.1

Re: [PATCH 29/31 v3] soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr

[Rob Herring]

On Mon, Apr 8, 2019 at 1:29 AM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> This adds device tree bindings for the Intel IXP4xx AHB
> Queue Manager.
>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v2->v3:
> - Rebased on v5.1-rc1
> - Drop oneOf in compatible, just list items.
> - Drop description on reg, just use maxItems: 1
> - Set '#queue-cells' as required
> ---
>  .../misc/intel,ixp4xx-queue-manager.yaml      | 54 +++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml
>
> diff --git a/Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml b/Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml
> new file mode 100644
> index 000000000000..346707936a2f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/misc/intel,ixp4xx-queue-manager.yaml
> @@ -0,0 +1,54 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright 2019 Linaro Ltd.
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/misc/intel-ixp4xx-ahb-queue-manager.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Intel IXP4xx AHB Queue Manager
> +
> +maintainers:
> +  - Linus Walleij <linus.walleij@linaro.org>
> +
> +description: |
> +  The IXP4xx AHB Queue Manager maintains queues as circular buffers in
> +  an 8KB embedded SRAM along with hardware pointers. It is used by both
> +  the XScale processor and the NPEs (Network Processing Units) in the
> +  IXP4xx for accelerating queues, especially for networking. Clients pick
> +  queues from the queue manager with foo-queue = <&qmgr N> where the
> +  &qmgr is a phandle to the queue manager and N is the queue resource
> +  number. The queue resources available and their specific purpose
> +  on a certain IXP4xx system will vary.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: intel,ixp4xx-ahb-queue-manager
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    items:
> +      - description: Interrupt for queues 0-31
> +      - description: Interrupt for queues 32-63
> +
> +  '#queue-cells':
> +    const: 1

Not sure why I didn't notice this earlier... You don't need '#*-cells'
unless it's variable and this should have a vendor prefix as it could
collide with a generic binding if we came up with a 'queue' binding.
So I'd just drop it as it seems specific to this binding.

Rob

Re: [PATCH 27/31 v3] soc: ixp4xx: Add DT bindings for IXP4xx NPE

[Rob Herring]

On Mon, Apr 8, 2019 at 1:29 AM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> This adds DT bindings for the Intel IXP4xx Network Processing
> Engine (NPE). These are three firmware-executing units found in
> the IXP4xx SoC. These bindings use YAML.
>
> Cc: devicetree@vger.kernel.org
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> ChangeLog v2->v3:
> - Rebased on v5.1-rc1
> ---
>  ...ntel,ixp4xx-network-processing-engine.yaml | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/firmware/intel,ixp4xx-network-processing-engine.yaml

Reviewed-by: Rob Herring <robh@kernel.org>