diff mbox series

[03/18] dt-bindings: mtd: nand-chip: Create a NAND chip description

Message ID 20211020142809.349347-4-miquel.raynal@bootlin.com (mailing list archive)
State Superseded
Headers show
Series External ECC engines & Macronix support | expand

Commit Message

Miquel Raynal Oct. 20, 2021, 2:27 p.m. UTC
Move the NAND chip description out of the NAND controller file. Indeed,
a subsequent part of the properties supported by a raw NAND chip are
also supported by SPI-NAND chips. So let's create a generic NAND chip
description which will be pulled by nand-controller.yaml and later by
spi-nand.yaml as well.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 .../devicetree/bindings/mtd/nand-chip.yaml    | 71 +++++++++++++++++++
 .../bindings/mtd/nand-controller.yaml         | 53 ++------------
 2 files changed, 75 insertions(+), 49 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mtd/nand-chip.yaml

Comments

Rob Herring (Arm) Oct. 20, 2021, 9:14 p.m. UTC | #1
On Wed, 20 Oct 2021 16:27:54 +0200, Miquel Raynal wrote:
> Move the NAND chip description out of the NAND controller file. Indeed,
> a subsequent part of the properties supported by a raw NAND chip are
> also supported by SPI-NAND chips. So let's create a generic NAND chip
> description which will be pulled by nand-controller.yaml and later by
> spi-nand.yaml as well.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  .../devicetree/bindings/mtd/nand-chip.yaml    | 71 +++++++++++++++++++
>  .../bindings/mtd/nand-controller.yaml         | 53 ++------------
>  2 files changed, 75 insertions(+), 49 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/mtd/nand-chip.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/brcm,brcmnand.example.dt.yaml: nand-controller@f0442800: nand@1: '#address-cells', '#size-cells', 'compatible', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/brcm,brcmnand.example.dt.yaml: nand-controller@f0442800: nand@1: '#address-cells', '#size-cells', 'compatible', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/brcm,brcmnand.example.dt.yaml: nand-controller@10000200: nand@0: '#address-cells', '#size-cells', 'compatible', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/brcm,brcmnand.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/brcm,brcmnand.example.dt.yaml: nand-controller@10000200: nand@0: '#address-cells', '#size-cells', 'compatible', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/ingenic,nand.example.dt.yaml: nand-controller@1: nand@1: 'nand-ecc-mode', 'nand-on-flash-bbt', 'partitions' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/ingenic,nand.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/ingenic,nand.example.dt.yaml: nand-controller@1: nand@1: 'nand-ecc-mode', 'nand-on-flash-bbt', 'partitions' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/rockchip,nand-controller.example.dt.yaml: nand-controller@ff4b0000: nand@0: 'label', 'nand-bus-width', 'nand-ecc-mode', 'nand-is-boot-medium', 'rockchip,boot-blks', 'rockchip,boot-ecc-strength' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/rockchip,nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/rockchip,nand-controller.example.dt.yaml: nand-controller@ff4b0000: nand@0: 'label', 'nand-bus-width', 'nand-ecc-mode', 'nand-is-boot-medium', 'rockchip,boot-blks', 'rockchip,boot-ecc-strength' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.example.dt.yaml: nand-controller@58002000: nand@0: '#address-cells', '#size-cells', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.example.dt.yaml: nand-controller@58002000: nand@0: '#address-cells', '#size-cells', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/intel,lgm-nand.example.dt.yaml: nand-controller@e0f00000: nand@0: 'nand-ecc-mode' does not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/intel,lgm-nand.example.dt.yaml: nand-controller@e0f00000: nand@0: 'nand-ecc-mode' does not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/intel,lgm-nand.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/qcom,nandc.example.dt.yaml: nand-controller@1ac00000: nand@0: 'nand-bus-width', 'partitions' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/qcom,nandc.example.dt.yaml: nand-controller@1ac00000: nand@0: 'nand-bus-width', 'partitions' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/qcom,nandc.example.dt.yaml: nand-controller@79b0000: nand@0: 'nand-bus-width', 'partitions' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/qcom,nandc.example.dt.yaml: nand-controller@79b0000: nand@0: 'nand-bus-width', 'partitions' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/qcom,nandc.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/memory-controllers/st,stm32-fmc2-ebi.example.dt.yaml: nand-controller@4,0: nand@0: '#address-cells', '#size-cells', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/memory-controllers/st,stm32-fmc2-ebi.example.dt.yaml: nand-controller@4,0: nand@0: '#address-cells', '#size-cells', 'nand-on-flash-bbt' do not match any of the regexes: 'pinctrl-[0-9]+'
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/mtd/nand-controller.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1543921

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.
Rob Herring (Arm) Oct. 22, 2021, 10:47 p.m. UTC | #2
On Wed, Oct 20, 2021 at 04:27:54PM +0200, Miquel Raynal wrote:
> Move the NAND chip description out of the NAND controller file. Indeed,
> a subsequent part of the properties supported by a raw NAND chip are
> also supported by SPI-NAND chips. So let's create a generic NAND chip
> description which will be pulled by nand-controller.yaml and later by
> spi-nand.yaml as well.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  .../devicetree/bindings/mtd/nand-chip.yaml    | 71 +++++++++++++++++++
>  .../bindings/mtd/nand-controller.yaml         | 53 ++------------
>  2 files changed, 75 insertions(+), 49 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/mtd/nand-chip.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mtd/nand-chip.yaml b/Documentation/devicetree/bindings/mtd/nand-chip.yaml
> new file mode 100644
> index 000000000000..1f230a3ee27d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/nand-chip.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mtd/nand-chip.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NAND Chip and NAND Controller Generic Binding
> +
> +maintainers:
> +  - Miquel Raynal <miquel.raynal@bootlin.com>
> +
> +description: |
> +  This file covers the generic description of a NAND chip. It implies that the
> +  bus interface should not be taken into account: both raw NAND devices and
> +  SPI-NAND devices are concerned by this description.
> +
> +properties:
> +  reg:
> +    description:
> +      Contains the chip-select IDs.
> +
> +  nand-ecc-engine:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/phandle
> +    description: |
> +      A phandle on the hardware ECC engine if any. There are
> +      basically three possibilities:
> +      1/ The ECC engine is part of the NAND controller, in this
> +      case the phandle should reference the parent node.
> +      2/ The ECC engine is part of the NAND part (on-die), in this
> +      case the phandle should reference the node itself.
> +      3/ The ECC engine is external, in this case the phandle should
> +      reference the specific ECC engine node.
> +
> +  nand-use-soft-ecc-engine:
> +    type: boolean
> +    description: Use a software ECC engine.
> +
> +  nand-no-ecc-engine:
> +    type: boolean
> +    description: Do not use any ECC correction.
> +
> +  nand-ecc-algo:
> +    description:
> +      Desired ECC algorithm.
> +    $ref: /schemas/types.yaml#/definitions/string
> +    enum: [hamming, bch, rs]
> +
> +  nand-ecc-strength:
> +    description:
> +      Maximum number of bits that can be corrected per ECC step.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 1
> +
> +  nand-ecc-step-size:
> +    description:
> +      Number of data bytes covered by a single ECC step.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 1
> +
> +  secure-regions:
> +    $ref: /schemas/types.yaml#/definitions/uint64-matrix
> +    description:
> +      Regions in the NAND chip which are protected using a secure element
> +      like Trustzone. This property contains the start address and size of
> +      the secure regions present.
> +
> +required:
> +  - reg
> +
> +additionalProperties: false

This is the source of the errors reported as this wasn't set before. If 
we're allowing custom properties (not defined here) within nand chip 
nodes, then each schema with custom properties has to reference 
nand-chip.yaml, set 'unevaluatedProperties: false', and then define 
their custom properties. And then this needs to be true. 

Rob
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/mtd/nand-chip.yaml b/Documentation/devicetree/bindings/mtd/nand-chip.yaml
new file mode 100644
index 000000000000..1f230a3ee27d
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/nand-chip.yaml
@@ -0,0 +1,71 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/nand-chip.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NAND Chip and NAND Controller Generic Binding
+
+maintainers:
+  - Miquel Raynal <miquel.raynal@bootlin.com>
+
+description: |
+  This file covers the generic description of a NAND chip. It implies that the
+  bus interface should not be taken into account: both raw NAND devices and
+  SPI-NAND devices are concerned by this description.
+
+properties:
+  reg:
+    description:
+      Contains the chip-select IDs.
+
+  nand-ecc-engine:
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/phandle
+    description: |
+      A phandle on the hardware ECC engine if any. There are
+      basically three possibilities:
+      1/ The ECC engine is part of the NAND controller, in this
+      case the phandle should reference the parent node.
+      2/ The ECC engine is part of the NAND part (on-die), in this
+      case the phandle should reference the node itself.
+      3/ The ECC engine is external, in this case the phandle should
+      reference the specific ECC engine node.
+
+  nand-use-soft-ecc-engine:
+    type: boolean
+    description: Use a software ECC engine.
+
+  nand-no-ecc-engine:
+    type: boolean
+    description: Do not use any ECC correction.
+
+  nand-ecc-algo:
+    description:
+      Desired ECC algorithm.
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [hamming, bch, rs]
+
+  nand-ecc-strength:
+    description:
+      Maximum number of bits that can be corrected per ECC step.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+
+  nand-ecc-step-size:
+    description:
+      Number of data bytes covered by a single ECC step.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 1
+
+  secure-regions:
+    $ref: /schemas/types.yaml#/definitions/uint64-matrix
+    description:
+      Regions in the NAND chip which are protected using a secure element
+      like Trustzone. This property contains the start address and size of
+      the secure regions present.
+
+required:
+  - reg
+
+additionalProperties: false
diff --git a/Documentation/devicetree/bindings/mtd/nand-controller.yaml b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
index 5cd144a9ec99..44825dc95412 100644
--- a/Documentation/devicetree/bindings/mtd/nand-controller.yaml
+++ b/Documentation/devicetree/bindings/mtd/nand-controller.yaml
@@ -52,32 +52,15 @@  properties:
 patternProperties:
   "^nand@[a-f0-9]$":
     type: object
+
+    allOf:
+      - $ref: "nand-chip.yaml#"
+
     properties:
       reg:
         description:
           Contains the chip-select IDs.
 
-      nand-ecc-engine:
-        allOf:
-          - $ref: /schemas/types.yaml#/definitions/phandle
-        description: |
-          A phandle on the hardware ECC engine if any. There are
-          basically three possibilities:
-          1/ The ECC engine is part of the NAND controller, in this
-          case the phandle should reference the parent node.
-          2/ The ECC engine is part of the NAND part (on-die), in this
-          case the phandle should reference the node itself.
-          3/ The ECC engine is external, in this case the phandle should
-          reference the specific ECC engine node.
-
-      nand-use-soft-ecc-engine:
-        type: boolean
-        description: Use a software ECC engine.
-
-      nand-no-ecc-engine:
-        type: boolean
-        description: Do not use any ECC correction.
-
       nand-ecc-placement:
         allOf:
           - $ref: /schemas/types.yaml#/definitions/string
@@ -88,12 +71,6 @@  patternProperties:
           known to be stored in the OOB area, or "interleaved" if ECC
           bytes will be interleaved with regular data in the main area.
 
-      nand-ecc-algo:
-        description:
-          Desired ECC algorithm.
-        $ref: /schemas/types.yaml#/definitions/string
-        enum: [hamming, bch, rs]
-
       nand-bus-width:
         description:
           Bus width to the NAND chip
@@ -112,18 +89,6 @@  patternProperties:
           find Bad Block Markers (BBM). These markers will help to
           build a volatile BBT in RAM.
 
-      nand-ecc-strength:
-        description:
-          Maximum number of bits that can be corrected per ECC step.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        minimum: 1
-
-      nand-ecc-step-size:
-        description:
-          Number of data bytes covered by a single ECC step.
-        $ref: /schemas/types.yaml#/definitions/uint32
-        minimum: 1
-
       nand-ecc-maximize:
         $ref: /schemas/types.yaml#/definitions/flag
         description:
@@ -154,13 +119,6 @@  patternProperties:
           Ready/Busy pins. Active state refers to the NAND ready state and
           should be set to GPIOD_ACTIVE_HIGH unless the signal is inverted.
 
-      secure-regions:
-        $ref: /schemas/types.yaml#/definitions/uint64-matrix
-        description:
-          Regions in the NAND chip which are protected using a secure element
-          like Trustzone. This property contains the start address and size of
-          the secure regions present.
-
     required:
       - reg
 
@@ -181,9 +139,6 @@  examples:
 
       nand@0 {
         reg = <0>; /* Native CS */
-        nand-use-soft-ecc-engine;
-        nand-ecc-algo = "bch";
-
         /* NAND chip specific properties */
       };