[PATCH v2 09/12] dt-bindings: memory-controllers: Convert fsl,elbc to YAML

J. Neuschäfer via B4 Relay
2025-02-07T21:30:37Z

From: "J. Neuschäfer" <j.ne@posteo.net>

Convert the Freescale localbus controller bindings from text form to
YAML. The updated list of compatible strings reflects current usage
in arch/powerpc/boot/dts/, except that many existing device trees
erroneously specify "simple-bus" in addition to fsl,*elbc.

Changes compared to the txt version:
- removed the board-control (fsl,mpc8272ads-bcsr) node because it only
appears in this example and nowhere else
- added a new example with NAND flash
- updated list of compatible strings

Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
---

V2:
- fix order of properties in examples, according to dts coding style
- move to Documentation/devicetree/bindings/memory-controllers
- clarify the commit message a tiny bit
- remove unnecessary multiline markers (|)
- define address format in patternProperties
- trim subject line (remove "binding")
- remove use of "simple-bus", because it's technically incorrect
---
.../bindings/memory-controllers/fsl,elbc.yaml | 146 +++++++++++++++++++++
.../devicetree/bindings/powerpc/fsl/lbc.txt | 43 ------
2 files changed, 146 insertions(+), 43 deletions(-)

diff --git a/Documentation/devicetree/bindings/memory-controllers/fsl,elbc.yaml b/Documentation/devicetree/bindings/memory-controllers/fsl,elbc.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..7bc05e3b9ac74125e5786748df57f6cc1255a62d
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/fsl,elbc.yaml
@@ -0,0 +1,146 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/fsl,elbc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale Enhanced Local Bus Controller
+
+maintainers:
+ - J. Neuschäfer <j.ne@posteo.net>
+
+properties:
+ $nodename:
+ pattern: "^localbus@[0-9a-f]+$"
+
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - fsl,mpc8313-elbc
+ - fsl,mpc8315-elbc
+ - fsl,mpc8377-elbc
+ - fsl,mpc8378-elbc
+ - fsl,mpc8379-elbc
+ - fsl,mpc8536-elbc
+ - fsl,mpc8569-elbc
+ - fsl,mpc8572-elbc
+ - fsl,p1020-elbc
+ - fsl,p1021-elbc
+ - fsl,p1023-elbc
+ - fsl,p2020-elbc
+ - fsl,p2041-elbc
+ - fsl,p3041-elbc
+ - fsl,p4080-elbc
+ - fsl,p5020-elbc
+ - fsl,p5040-elbc
+ - const: fsl,elbc
+
+ - items:
+ - const: fsl,mpc8272-localbus
+ - const: fsl,pq2-localbus
+
+ - items:
+ - enum:
+ - fsl,mpc8247-localbus
+ - fsl,mpc8248-localbus
+ - fsl,mpc8360-localbus
+ - const: fsl,pq2pro-localbus
+
+ - items:
+ - enum:
+ - fsl,mpc8540-localbus
+ - fsl,mpc8544-lbc
+ - fsl,mpc8544-localbus
+ - fsl,mpc8548-lbc
+ - fsl,mpc8548-localbus
+ - fsl,mpc8560-localbus
+ - fsl,mpc8568-localbus
+ - const: fsl,pq3-localbus
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ "#address-cells":
+ enum: [2, 3]
+ description:
+ The first cell is the chipselect number, and the remaining cells are the
+ offset into the chipselect.
+
+ "#size-cells":
+ enum: [1, 2]
+ description:
+ Either one or two, depending on how large each chipselect can be.
+
+ ranges:
+ description:
+ Each range corresponds to a single chipselect, and covers the entire
+ access window as configured.
+
+patternProperties:
+ # format: name@chipselect,address
+ "^.*@[0-9a-f]+,[0-9a-f]+$":
+ type: object
+
+additionalProperties: false
+
+examples:
+ - |
+ localbus@f0010100 {
+ compatible = "fsl,mpc8272-localbus",
+ "fsl,pq2-localbus";
+ reg = <0xf0010100 0x40>;
+ ranges = <0x0 0x0 0xfe000000 0x02000000
+ 0x1 0x0 0xf4500000 0x00008000
+ 0x2 0x0 0xfd810000 0x00010000>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+
+ flash@0,0 {
+ compatible = "jedec-flash";
+ reg = <0x0 0x0 0x2000000>;
+ bank-width = <4>;
+ device-width = <1>;
+ };
+
+ simple-periph@2,0 {
+ compatible = "fsl,elbc-gpcm-uio";
+ reg = <0x2 0x0 0x10000>;
+ elbc-gpcm-br = <0xfd810800>;
+ elbc-gpcm-or = <0xffff09f7>;
+ };
+ };
+
+ - |
+ localbus@e0005000 {
+ compatible = "fsl,mpc8315-elbc", "fsl,elbc";
+ reg = <0xe0005000 0x1000>;
+ ranges = <0x0 0x0 0xfe000000 0x00800000
+ 0x1 0x0 0xe0600000 0x00002000
+ 0x2 0x0 0xf0000000 0x00020000
+ 0x3 0x0 0xfa000000 0x00008000>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ interrupts = <77 0x8>;
+ interrupt-parent = <&ipic>;
+
+ flash@0,0 {
+ compatible = "cfi-flash";
+ reg = <0x0 0x0 0x800000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ bank-width = <2>;
+ device-width = <1>;
+ };
+
+ nand@1,0 {
+ compatible = "fsl,mpc8315-fcm-nand",
+ "fsl,elbc-fcm-nand";
+ reg = <0x1 0x0 0x2000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/powerpc/fsl/lbc.txt b/Documentation/devicetree/bindings/powerpc/fsl/lbc.txt
deleted file mode 100644
index 1c80fcedebb52049721fbd61c4dd4c57133bd47c..0000000000000000000000000000000000000000
--- a/Documentation/devicetree/bindings/powerpc/fsl/lbc.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-* Chipselect/Local Bus
-
-Properties:
-- name : Should be localbus
-- #address-cells : Should be either two or three. The first cell is the
- chipselect number, and the remaining cells are the
- offset into the chipselect.
-- #size-cells : Either one or two, depending on how large each chipselect
- can be.
-- ranges : Each range corresponds to a single chipselect, and cover
- the entire access window as configured.
-
-Example:
- localbus@f0010100 {
- compatible = "fsl,mpc8272-localbus",
- "fsl,pq2-localbus";
- #address-cells = <2>;
- #size-cells = <1>;
- reg = <0xf0010100 0x40>;
-
- ranges = <0x0 0x0 0xfe000000 0x02000000
- 0x1 0x0 0xf4500000 0x00008000
- 0x2 0x0 0xfd810000 0x00010000>;
-
- flash@0,0 {
- compatible = "jedec-flash";
- reg = <0x0 0x0 0x2000000>;
- bank-width = <4>;
- device-width = <1>;
- };
-
- board-control@1,0 {
- reg = <0x1 0x0 0x20>;
- compatible = "fsl,mpc8272ads-bcsr";
- };
-
- simple-periph@2,0 {
- compatible = "fsl,elbc-gpcm-uio";
- reg = <0x2 0x0 0x10000>;
- elbc-gpcm-br = <0xfd810800>;
- elbc-gpcm-or = <0xffff09f7>;
- };
- };

--
2.48.0.rc1.219.gb6b6757d772