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Subject[PATCH 2/3] dt-bindings: mfd: atmel,flexcom: Add new compatible string for lan966x
Date
LAN966x SoC flexcoms has two optional I/O lines. Namely, CS0 and CS1 in
flexcom SPI mode. CTS and RTS in flexcom USART mode. These pins
can be mapped to lan966x FLEXCOM_SHARED[0-20] pins and usage depends on
functions being configured.

Signed-off-by: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
---
.../bindings/mfd/atmel,flexcom.yaml | 21 ++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/atmel,flexcom.yaml b/Documentation/devicetree/bindings/mfd/atmel,flexcom.yaml
index 221bd840b49e..6050482ad8ef 100644
--- a/Documentation/devicetree/bindings/mfd/atmel,flexcom.yaml
+++ b/Documentation/devicetree/bindings/mfd/atmel,flexcom.yaml
@@ -16,7 +16,9 @@ description:

properties:
compatible:
- const: atmel,sama5d2-flexcom
+ enum:
+ - atmel,sama5d2-flexcom
+ - microchip,lan966x-flexcom

reg:
maxItems: 1
@@ -46,6 +48,21 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [1, 2, 3]

+ microchip,flx-shrd-pins:
+ description: Specify the Flexcom shared pins to be used for flexcom
+ chip-selects.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 20
+
+ microchip,flx-cs-names:
+ description: Chip select names. "cts", "rts" for flexcom USART "CTS" and
+ "RTS" lines. "cs0", "cs1" for flexcom SPI chip-select lines.
+ items:
+ enum: [ cs0, cs1, cts, rts ]
+ minItems: 1
+ maxItems: 2
+
patternProperties:
"^serial@[0-9a-f]+$":
description: See atmel-usart.txt for details of USART bindings.
@@ -80,6 +97,8 @@ examples:
#size-cells = <1>;
ranges = <0x0 0xf8034000 0x800>;
atmel,flexcom-mode = <2>;
+ microchip,flx-shrd-pins = <9>;
+ microchip,flx-cs-names = "cs0";

spi0: spi@400 {
compatible = "atmel,at91rm9200-spi";
--
2.17.1
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