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Message-Id: <20241205053350.434370-1-niravkumar.l.rabara@intel.com>
Date: Thu, 5 Dec 2024 13:33:50 +0800
From: niravkumar.l.rabara@...el.com
To: devicetree@...r.kernel.org
Cc: Miquel Raynal <miquel.raynal@...tlin.com>,
Richard Weinberger <richard@....at>,
Vignesh Raghavendra <vigneshr@...com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Niravkumar L Rabara <niravkumar.l.rabara@...el.com>,
linux-mtd@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v4] dt-bindings: mtd: cadence: convert cadence-nand-controller.txt to yaml
From: Niravkumar L Rabara <niravkumar.l.rabara@...el.com>
Convert cadence-nand-controller.txt to yaml format.
Update cadence-nand-controller.txt to cdns,hp-nfc.yaml in MAINTAINER file.
Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@...el.com>
---
Changes in v4:
- Fixed the identation for examples as per review comment in v3.
Changes in v3:
- Changed file name to cdns,hp-nfc.yaml to match with compatible.
- Update description, fixed alignment, and used defines for interrupt
flag as per review comments in v2.
Changes in v2:
- Update name cadence-nand-controller.txt to cadence,nand.yaml in MAINTAINER
file to resolve the warning.
.../bindings/mtd/cadence-nand-controller.txt | 53 -------------
.../devicetree/bindings/mtd/cdns,hp-nfc.yaml | 75 +++++++++++++++++++
MAINTAINERS | 2 +-
3 files changed, 76 insertions(+), 54 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt
create mode 100644 Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
diff --git a/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt b/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt
deleted file mode 100644
index d2eada5044b2..000000000000
--- a/Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt
+++ /dev/null
@@ -1,53 +0,0 @@
-* Cadence NAND controller
-
-Required properties:
- - compatible : "cdns,hp-nfc"
- - reg : Contains two entries, each of which is a tuple consisting of a
- physical address and length. The first entry is the address and
- length of the controller register set. The second entry is the
- address and length of the Slave DMA data port.
- - reg-names: should contain "reg" and "sdma"
- - #address-cells: should be 1. The cell encodes the chip select connection.
- - #size-cells : should be 0.
- - interrupts : The interrupt number.
- - clocks: phandle of the controller core clock (nf_clk).
-
-Optional properties:
- - dmas: shall reference DMA channel associated to the NAND controller
- - cdns,board-delay-ps : Estimated Board delay. The value includes the total
- round trip delay for the signals and is used for deciding on values
- associated with data read capture. The example formula for SDR mode is
- the following:
- board delay = RE#PAD delay + PCB trace to device + PCB trace from device
- + DQ PAD delay
-
-Child nodes represent the available NAND chips.
-
-Required properties of NAND chips:
- - reg: shall contain the native Chip Select ids from 0 to max supported by
- the cadence nand flash controller
-
-See Documentation/devicetree/bindings/mtd/nand-controller.yaml for more details on
-generic bindings.
-
-Example:
-
-nand_controller: nand-controller@...00000 {
- compatible = "cdns,hp-nfc";
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0x60000000 0x10000>, <0x80000000 0x10000>;
- reg-names = "reg", "sdma";
- clocks = <&nf_clk>;
- cdns,board-delay-ps = <4830>;
- interrupts = <2 0>;
- nand@0 {
- reg = <0>;
- label = "nand-1";
- };
- nand@1 {
- reg = <1>;
- label = "nand-2";
- };
-
-};
diff --git a/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml b/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
new file mode 100644
index 000000000000..0bed37a994c3
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/cdns,hp-nfc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Cadence NAND controller
+
+maintainers:
+ - Niravkumar L Rabara <niravkumar.l.rabara@...el.com>
+
+allOf:
+ - $ref: nand-controller.yaml
+
+properties:
+ compatible:
+ items:
+ - const: cdns,hp-nfc
+
+ reg:
+ items:
+ - description: Controller register set
+ - description: Slave DMA data port register set
+
+ reg-names:
+ items:
+ - const: reg
+ - const: sdma
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ dmas:
+ maxItems: 1
+
+ cdns,board-delay-ps:
+ description: |
+ Estimated Board delay. The value includes the total round trip
+ delay for the signals and is used for deciding on values associated
+ with data read capture. The example formula for SDR mode is the
+ following.
+ board delay = RE#PAD delay + PCB trace to device + PCB trace from device
+ + DQ PAD delay
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - interrupts
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ nand-controller@...80000 {
+ compatible = "cdns,hp-nfc";
+ reg = <0x10b80000 0x10000>,
+ <0x10840000 0x10000>;
+ reg-names = "reg", "sdma";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&nf_clk>;
+ cdns,board-delay-ps = <4830>;
+
+ nand@0 {
+ reg = <0>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 1e930c7a58b1..9fab4b4a75a1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5009,7 +5009,7 @@ F: drivers/media/platform/cadence/cdns-csi2*
CADENCE NAND DRIVER
L: linux-mtd@...ts.infradead.org
S: Orphan
-F: Documentation/devicetree/bindings/mtd/cadence-nand-controller.txt
+F: Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
F: drivers/mtd/nand/raw/cadence-nand-controller.c
CADENCE USB3 DRD IP DRIVER
--
2.25.1
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