[PATCH v4 01/16] dt-bindings: mtd: sunxi: Add H616 compatible

Richard Genoud
2025-10-28T07:36:19Z

The H616 NAND controller is quite different from the A10 and A23 ones,
some registers offset changed, and some new one are introduced.
Also, the DMA handling is different (it uses chained descriptors)

So, introduce a new compatible to represent this version of the IP.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Richard Genoud <richard.genoud@bootlin.com>
---
.../mtd/allwinner,sun4i-a10-nand.yaml | 41 +++++++++++++++++--
1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/mtd/allwinner,sun4i-a10-nand.yaml b/Documentation/devicetree/bindings/mtd/allwinner,sun4i-a10-nand.yaml
index 054b6b8bf9b9..9d061e2216cb 100644
--- a/Documentation/devicetree/bindings/mtd/allwinner,sun4i-a10-nand.yaml
+++ b/Documentation/devicetree/bindings/mtd/allwinner,sun4i-a10-nand.yaml
@@ -6,9 +6,6 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner A10 NAND Controller

-allOf:
- - $ref: nand-controller.yaml
-
maintainers:
- Chen-Yu Tsai <wens@csie.org>
- Maxime Ripard <mripard@kernel.org>
@@ -18,6 +15,8 @@ properties:
enum:
- allwinner,sun4i-a10-nand
- allwinner,sun8i-a23-nand-controller
+ - allwinner,sun50i-h616-nand-controller
+
reg:
maxItems: 1

@@ -25,14 +24,20 @@ properties:
maxItems: 1

clocks:
+ minItems: 2
items:
- description: Bus Clock
- description: Module Clock
+ - description: ECC Clock
+ - description: MBus Clock

clock-names:
+ minItems: 2
items:
- const: ahb
- const: mod
+ - const: ecc
+ - const: mbus

resets:
maxItems: 1
@@ -85,6 +90,36 @@ required:

unevaluatedProperties: false

+allOf:
+ - $ref: nand-controller.yaml
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - allwinner,sun4i-a10-nand
+ - allwinner,sun8i-a23-nand-controller
+ then:
+ properties:
+ clocks:
+ maxItems: 2
+ clock-names:
+ maxItems: 2
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - allwinner,sun50i-h616-nand-controller
+ then:
+ properties:
+ clocks:
+ minItems: 4
+ clock-names:
+ minItems: 4
+
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
--
2.47.3