[PATCH v3 0/5] Add support for Airoha EN7523 SoC

[PATCH v3 0/5] Add support for Airoha EN7523 SoC

[Bert Vermeulen]

This patchset adds support for the Airoha EN7523 SoC, intended primarily
for xPON/xDSL routers.

v3:
- s/armv7/armv8 in commit message
- Fixed dt-bindings vendor ordering
- Removed CONFIG_COMMON_CLK_EN7523 reference for now

v2:
- The company changed name from EcoNet to Airoha.
- Removed Makefile text offset in lieu of /memreserve/ DTS node (see
  https://lists.infradead.org/pipermail/linux-arm-kernel/2021-September/681898.html)
- DTS: Moved /memory node, fixed CPU compatible, removed GIC_CPU_MASK_SIMPLE
  from timer interrupts node, changed timer compatible, and minor fixes.

John Crispin (5):
  dt-bindings: Add vendor prefix for Airoha
  dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB
  ARM: dts: Add basic support for Airoha EN7523
  ARM: Add basic support for Airoha EN7523 SoC
  ARM: multi_v7_defconfig: Add support for Airoha EN7523 SoC

 .../devicetree/bindings/arm/airoha.yaml       |  27 +++++
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 arch/arm/Kconfig                              |  14 +++
 arch/arm/boot/dts/Makefile                    |   2 +
 arch/arm/boot/dts/en7523-evb.dts              |  26 ++++
 arch/arm/boot/dts/en7523.dtsi                 | 114 ++++++++++++++++++
 arch/arm/configs/multi_v7_defconfig           |   1 +
 7 files changed, 186 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/airoha.yaml
 create mode 100644 arch/arm/boot/dts/en7523-evb.dts
 create mode 100644 arch/arm/boot/dts/en7523.dtsi

-- 
2.25.1

[PATCH v3 1/5] dt-bindings: Add vendor prefix for Airoha

[Bert Vermeulen]

From: John Crispin <john@phrozen.org>

Add vendor prefix "airoha" for Airoha.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 07fb0d25fc15..4090589fabbe 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -59,6 +59,8 @@ patternProperties:
     description: Aeroflex Gaisler AB
   "^aesop,.*":
     description: AESOP Embedded Forum
+  "^airoha,.*":
+    description: Airoha
   "^al,.*":
     description: Annapurna Labs
   "^alcatel,.*":
-- 
2.25.1

[PATCH v3 2/5] dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB

[Bert Vermeulen]

From: John Crispin <john@phrozen.org>

Add devicetree binding for Airoha EN7523 SoC and evaluation board.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
---
 .../devicetree/bindings/arm/airoha.yaml       | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/airoha.yaml

diff --git a/Documentation/devicetree/bindings/arm/airoha.yaml b/Documentation/devicetree/bindings/arm/airoha.yaml
new file mode 100644
index 000000000000..f2661ba81109
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/airoha.yaml
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/airoha.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha SoC based Platforms Device Tree Bindings
+
+maintainers:
+  - Felix Fietkau <nbd@nbd.name>
+  - John Crispin <john@phrozen.org>
+description: |
+  Boards with an Airoha SoC shall have the following properties.
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - airoha,en7523-evb
+          - const: airoha,en7523
+
+additionalProperties: true
+
+...
-- 
2.25.1

[PATCH v3 3/5] ARM: dts: Add basic support for Airoha EN7523

[Bert Vermeulen]

From: John Crispin <john@phrozen.org>

Add basic support for Airoha EN7523, enough for booting to console.

The UART is basically 8250-compatible, except for the clock selection.
A clock-frequency value is synthesized to get this to run at 115200 bps.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
---
 arch/arm/boot/dts/Makefile       |   2 +
 arch/arm/boot/dts/en7523-evb.dts |  26 +++++++
 arch/arm/boot/dts/en7523.dtsi    | 114 +++++++++++++++++++++++++++++++
 3 files changed, 142 insertions(+)
 create mode 100644 arch/arm/boot/dts/en7523-evb.dts
 create mode 100644 arch/arm/boot/dts/en7523.dtsi

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 863347b6b65e..3525ace2d2e0 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -174,6 +174,8 @@ dtb-$(CONFIG_ARCH_DAVINCI) += \
 	da850-lego-ev3.dtb
 dtb-$(CONFIG_ARCH_DIGICOLOR) += \
 	cx92755_equinox.dtb
+dtb-$(CONFIG_ARCH_AIROHA) += \
+	en7523-evb.dtb
 dtb-$(CONFIG_ARCH_EXYNOS3) += \
 	exynos3250-artik5-eval.dtb \
 	exynos3250-monk.dtb \
diff --git a/arch/arm/boot/dts/en7523-evb.dts b/arch/arm/boot/dts/en7523-evb.dts
new file mode 100644
index 000000000000..fa595b97bdd8
--- /dev/null
+++ b/arch/arm/boot/dts/en7523-evb.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+/* Bootloader installs ATF here */
+/memreserve/ 0x80000000 0x80000;
+
+#include "en7523.dtsi"
+
+/ {
+	model = "Airoha EN7523 Evaluation Board";
+	compatible = "airoha,en7523-evb", "airoha,en7523";
+
+	aliases {
+		serial0 = &uart1;
+	};
+
+	chosen {
+		bootargs = "earlycon=uart8250,mmio32,0x1fbf0000 console=ttyS0,115200";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+};
diff --git a/arch/arm/boot/dts/en7523.dtsi b/arch/arm/boot/dts/en7523.dtsi
new file mode 100644
index 000000000000..034bd1de2cd6
--- /dev/null
+++ b/arch/arm/boot/dts/en7523.dtsi
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	interrupt-parent = <&gic>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		npu_binary@84000000 {
+			no-map;
+			reg = <0x84000000 0xA00000>;
+		};
+
+		npu_flag@84B0000 {
+			no-map;
+			reg = <0x84B00000 0x100000>;
+		};
+
+		npu_pkt@85000000 {
+			no-map;
+			reg = <0x85000000 0x1A00000>;
+		};
+
+		npu_phyaddr@86B00000 {
+			no-map;
+			reg = <0x86B00000 0x100000>;
+		};
+
+		npu_rxdesc@86D00000 {
+			no-map;
+			reg = <0x86D00000 0x100000>;
+		};
+	};
+
+	psci {
+		compatible = "arm,psci-0.2";
+		method = "smc";
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&cpu0>;
+				};
+				core1 {
+					cpu = <&cpu1>;
+				};
+			};
+		};
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0>;
+			enable-method = "psci";
+			clock-frequency = <80000000>;
+			next-level-cache = <&L2_0>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x1>;
+			enable-method = "psci";
+			clock-frequency = <80000000>;
+			next-level-cache = <&L2_0>;
+		};
+
+		L2_0: l2-cache0 {
+			compatible = "cache";
+		};
+	};
+
+	gic: interrupt-controller@9000000 {
+		compatible = "arm,gic-v3";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		reg = <0x09000000 0x20000>, <0x09080000 0x80000>;
+		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	timer {
+		compatible = "arm,armv7-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+		clock-frequency = <25000000>;
+	};
+
+	uart1: serial@1fbf0000 {
+		compatible = "ns8250";
+		reg = <0x1fbf0000 0x30>;
+		reg-io-width = <4>;
+		reg-shift = <2>;
+		interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
+		clock-frequency = <1843200>;
+		status = "okay";
+	};
+};
-- 
2.25.1

[PATCH v3 4/5] ARM: Add basic support for Airoha EN7523 SoC

[Bert Vermeulen]

From: John Crispin <john@phrozen.org>

EN7523 is an armv8 based silicon used inside broadband access type devices
such as xPON and xDSL. It shares various silicon blocks with MediaTek
silicon such as the MT7622.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
---
 arch/arm/Kconfig | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 82f908fa5676..4c210df05c77 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -580,6 +580,20 @@ config ARCH_VIRT
 	select HAVE_ARM_ARCH_TIMER
 	select ARCH_SUPPORTS_BIG_ENDIAN
 
+config ARCH_AIROHA
+	bool "Airoha SoC Support"
+	depends on ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARM_GIC
+	select ARM_GIC_V3
+	select ARM_DMA_USE_IOMMU
+	select ARM_PSCI
+	select HAVE_ARM_ARCH_TIMER
+	select IOMMU_DMA
+	select COMMON_CLK
+	help
+	  Support for Airoha EN7523 SoCs
+
 #
 # This is sorted alphabetically by mach-* pathname.  However, plat-*
 # Kconfigs may be included either alphabetically (according to the
-- 
2.25.1

[PATCH v3 5/5] ARM: multi_v7_defconfig: Add support for Airoha EN7523 SoC

[Bert Vermeulen]

From: John Crispin <john@phrozen.org>

This enables basic bootup support for the Airoha EN7523 SoC.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Bert Vermeulen <bert@biot.com>
---
 arch/arm/configs/multi_v7_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index d9abaae118dd..922650200d74 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -31,6 +31,7 @@ CONFIG_MACH_BERLIN_BG2=y
 CONFIG_MACH_BERLIN_BG2CD=y
 CONFIG_MACH_BERLIN_BG2Q=y
 CONFIG_ARCH_DIGICOLOR=y
+CONFIG_ARCH_AIROHA=y
 CONFIG_ARCH_EXYNOS=y
 CONFIG_ARCH_HIGHBANK=y
 CONFIG_ARCH_HISI=y
-- 
2.25.1

Re: [PATCH v3 0/5] Add support for Airoha EN7523 SoC

[Linus Walleij]

On Wed, Sep 8, 2021 at 4:16 PM Bert Vermeulen <bert@biot.com> wrote:

> This patchset adds support for the Airoha EN7523 SoC, intended primarily
> for xPON/xDSL routers.
>
> v3:
> - s/armv7/armv8 in commit message
> - Fixed dt-bindings vendor ordering
> - Removed CONFIG_COMMON_CLK_EN7523 reference for now

This v3 patch set looks good to me.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij

Re: [PATCH v3 1/5] dt-bindings: Add vendor prefix for Airoha

[Rob Herring]

On Wed, 08 Sep 2021 16:16:02 +0200, Bert Vermeulen wrote:
> From: John Crispin <john@phrozen.org>
> 
> Add vendor prefix "airoha" for Airoha.
> 
> Signed-off-by: John Crispin <john@phrozen.org>
> Signed-off-by: Bert Vermeulen <bert@biot.com>
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
>  1 file changed, 2 insertions(+)
> 

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

Re: [PATCH v3 2/5] dt-bindings: arm: airoha: Add binding for EN7523 SoC and EVB

[Rob Herring]

On Wed, Sep 08, 2021 at 04:16:03PM +0200, Bert Vermeulen wrote:
> From: John Crispin <john@phrozen.org>
> 
> Add devicetree binding for Airoha EN7523 SoC and evaluation board.
> 
> Signed-off-by: John Crispin <john@phrozen.org>
> Signed-off-by: Bert Vermeulen <bert@biot.com>
> ---
>  .../devicetree/bindings/arm/airoha.yaml       | 27 +++++++++++++++++++
>  1 file changed, 27 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/arm/airoha.yaml
> 
> diff --git a/Documentation/devicetree/bindings/arm/airoha.yaml b/Documentation/devicetree/bindings/arm/airoha.yaml
> new file mode 100644
> index 000000000000..f2661ba81109
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/airoha.yaml
> @@ -0,0 +1,27 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/airoha.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Airoha SoC based Platforms Device Tree Bindings
> +
> +maintainers:
> +  - Felix Fietkau <nbd@nbd.name>
> +  - John Crispin <john@phrozen.org>

Blank line.

> +description: |

Don't need '|' here.

> +  Boards with an Airoha SoC shall have the following properties.
> +
> +properties:
> +  $nodename:
> +    const: '/'
> +  compatible:
> +    oneOf:

Don't need oneOf with only 1 entry.

> +      - items:
> +          - enum:
> +              - airoha,en7523-evb
> +          - const: airoha,en7523
> +
> +additionalProperties: true
> +
> +...
> -- 
> 2.25.1
> 
>