From: Feng Chen <feng.chen@amlogic.com>

Add bindings for Amlogic A113L2 SPI Flash Controller.

Signed-off-by: Feng Chen <feng.chen@amlogic.com>
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
---
 .../devicetree/bindings/spi/amlogic,a4-spifc.yaml  | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml b/Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml
new file mode 100644
index 000000000000..80a89408a832
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2025 Amlogic, Inc. All rights reserved
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/amlogic,a4-spifc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SPI flash controller for Amlogic ARM SoCs
+
+maintainers:
+  - Liang Yang <liang.yang@amlogic.com>
+  - Feng Chen <feng.chen@amlogic.com>
+  - Xianwei Zhao <xianwei.zhao@amlogic.com>
+
+description:
+  The Amlogic SPI flash controller is an extended version of the Amlogic NAND
+  flash controller. It supports SPI Nor Flash and SPI NAND Flash(where the Host
+  ECC HW engine could be enabled).
+
+allOf:
+  - $ref: /schemas/spi/spi-controller.yaml#
+
+properties:
+  compatible:
+    const: amlogic,a4-spifc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: clock apb gate
+      - description: clock used for the controller
+
+  clock-names:
+    items:
+      - const: gate
+      - const: core
+
+  interrupts:
+    maxItems: 1
+
+  amlogic,rx-adj:
+    description:
+      Adjust sample timing for RX, Sampling time move later by 1 bus clock.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1, 2, 3]
+    default: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    sfc0: spi@fe08d000 {
+      compatible = "amlogic,a4-spifc";
+      reg = <0xfe08d000 0x800>;
+      clocks = <&clkc_periphs 31>,
+               <&clkc_periphs 102>;
+      clock-names = "gate", "core";
+
+      pinctrl-0 = <&spiflash_default>;
+      pinctrl-names = "default";
+
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      flash@0 {
+          compatible = "spi-nand";
+          reg = <0>;
+          #address-cells = <1>;
+          #size-cells = <1>;
+          nand-ecc-engine = <&sfc0>;
+          nand-ecc-strength = <8>;
+          nand-ecc-step-size = <512>;
+      };
+    };

-- 
2.37.1

On 2025/8/21 13:17, Xianwei Zhao via B4 Relay wrote:
> [ EXTERNAL EMAIL ]
> 
> From: Feng Chen <feng.chen@amlogic.com>
> 
> Add bindings for Amlogic A113L2 SPI Flash Controller.
> 

Here I misunderstood and missed the modification of Subject.I mistakenly 
deleted the description.
I'll send the next version right away to solve these problems.

> Signed-off-by: Feng Chen <feng.chen@amlogic.com>
> Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
> ---
>   .../devicetree/bindings/spi/amlogic,a4-spifc.yaml  | 82 ++++++++++++++++++++++
>   1 file changed, 82 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml b/Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml
> new file mode 100644
> index 000000000000..80a89408a832
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/amlogic,a4-spifc.yaml
> @@ -0,0 +1,82 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2025 Amlogic, Inc. All rights reserved
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/spi/amlogic,a4-spifc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: SPI flash controller for Amlogic ARM SoCs
> +
> +maintainers:
> +  - Liang Yang <liang.yang@amlogic.com>
> +  - Feng Chen <feng.chen@amlogic.com>
> +  - Xianwei Zhao <xianwei.zhao@amlogic.com>
> +
> +description:
> +  The Amlogic SPI flash controller is an extended version of the Amlogic NAND
> +  flash controller. It supports SPI Nor Flash and SPI NAND Flash(where the Host
> +  ECC HW engine could be enabled).
> +
> +allOf:
> +  - $ref: /schemas/spi/spi-controller.yaml#
> +
> +properties:
> +  compatible:
> +    const: amlogic,a4-spifc
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: clock apb gate
> +      - description: clock used for the controller
> +
> +  clock-names:
> +    items:
> +      - const: gate
> +      - const: core
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  amlogic,rx-adj:
> +    description:
> +      Adjust sample timing for RX, Sampling time move later by 1 bus clock.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    enum: [0, 1, 2, 3]
> +    default: 0
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    sfc0: spi@fe08d000 {
> +      compatible = "amlogic,a4-spifc";
> +      reg = <0xfe08d000 0x800>;
> +      clocks = <&clkc_periphs 31>,
> +               <&clkc_periphs 102>;
> +      clock-names = "gate", "core";
> +
> +      pinctrl-0 = <&spiflash_default>;
> +      pinctrl-names = "default";
> +
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      flash@0 {
> +          compatible = "spi-nand";
> +          reg = <0>;
> +          #address-cells = <1>;
> +          #size-cells = <1>;
> +          nand-ecc-engine = <&sfc0>;
> +          nand-ecc-strength = <8>;
> +          nand-ecc-step-size = <512>;
> +      };
> +    };
> 
> --
> 2.37.1
> 
>