From: Kavyasree Kotagiri <kavyasree.kotagiri@microchip.com>
To: <lee@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>
Cc: devicetree@vger.kernel.org, alexandre.belloni@bootlin.com,
Rob Herring <robh@kernel.org>,
linux-kernel@vger.kernel.org, robh+dt@kernel.org,
sergiu.moga@microchip.com, UNGLinuxDriver@microchip.com,
claudiu.beznea@microchip.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v9 2/3] dt-bindings: mfd: atmel,sama5d2-flexcom: Add new compatible string for lan966x
Date: Fri, 16 Sep 2022 05:57:43 -0200 [thread overview]
Message-ID: <20220916075744.1879428-3-kavyasree.kotagiri@microchip.com> (raw)
In-Reply-To: <20220916075744.1879428-1-kavyasree.kotagiri@microchip.com>
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>
Reviewed-by: Rob Herring <robh@kernel.org>
---
v8 -> v9:
- No changes.
v7 -> v8:
- Changed compatible string to microchip,lan9668-flexcom.
v6 -> v7:
- Add #address-cells, #size-cells to flx3 example.
v5 -> v6:
- Removed spi node from flx3 example.
v4 -> v5:
- Fixed indentations and dt-schema errors.
- No errors seen with 'make dt_binding_check'.
v3 -> v4:
- Added else condition to allOf:if:then.
v2 -> v3:
- Add reg property of lan966x missed in v2.
v1 -> v2:
- Use allOf:if:then for lan966x dt properties
.../bindings/mfd/atmel,sama5d2-flexcom.yaml | 65 ++++++++++++++++++-
1 file changed, 64 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
index f28522cd987a..0c80f4e98c54 100644
--- a/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
+++ b/Documentation/devicetree/bindings/mfd/atmel,sama5d2-flexcom.yaml
@@ -18,9 +18,11 @@ properties:
compatible:
enum:
- atmel,sama5d2-flexcom
+ - microchip,lan9668-flexcom
reg:
- maxItems: 1
+ minItems: 1
+ maxItems: 2
clocks:
maxItems: 1
@@ -47,6 +49,27 @@ 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-array
+ minItems: 1
+ maxItems: 2
+ items:
+ minimum: 0
+ maximum: 20
+
+ microchip,flx-cs:
+ description: Flexcom chip selects. Here, value of '0' represents "cts" line
+ of flexcom USART or "cs0" line of flexcom SPI and value of '1' represents
+ "rts" line of flexcom USART or "cs1" line of flexcom SPI.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ maxItems: 2
+ items:
+ minimum: 0
+ maximum: 1
+
patternProperties:
"^serial@[0-9a-f]+$":
type: object
@@ -74,6 +97,31 @@ required:
- ranges
- atmel,flexcom-mode
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: microchip,lan9668-flexcom
+
+ then:
+ properties:
+ reg:
+ items:
+ - description: Flexcom base registers map
+ - description: Flexcom shared registers map
+ required:
+ - microchip,flx-shrd-pins
+ - microchip,flx-cs
+
+ else:
+ properties:
+ reg:
+ items:
+ - description: Flexcom base registers map
+ microchip,flx-shrd-pins: false
+ microchip,flx-cs: false
+
additionalProperties: false
examples:
@@ -89,4 +137,19 @@ examples:
ranges = <0x0 0xf8034000 0x800>;
atmel,flexcom-mode = <2>;
};
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ flx3: flexcom@e0064000 {
+ compatible = "microchip,lan9668-flexcom";
+ reg = <0xe0064000 0x100>,
+ <0xe2004180 0x8>;
+ clocks = <&flx0_clk>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x0 0xe0040000 0x800>;
+ atmel,flexcom-mode = <2>;
+ microchip,flx-shrd-pins = <9>;
+ microchip,flx-cs = <0>;
+ };
...
--
2.25.1
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next prev parent reply other threads:[~2022-09-16 7:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-16 7:57 [PATCH v9 0/3] Add support for lan966x flexcom chip-select configuration Kavyasree Kotagiri
2022-09-16 7:57 ` [PATCH v9 1/3] dt-bindings: mfd: Convert atmel-flexcom to json-schema Kavyasree Kotagiri
2022-09-19 5:27 ` Kavyasree.Kotagiri
2022-10-03 7:56 ` Krzysztof Kozlowski
2022-10-03 7:58 ` Krzysztof Kozlowski
2022-09-16 7:57 ` Kavyasree Kotagiri [this message]
2022-09-16 7:57 ` [PATCH v9 3/3] mfd: atmel-flexcom: Add support for lan966x flexcom chip-select configuration Kavyasree Kotagiri
2022-10-24 12:25 ` Lee Jones
2022-09-27 9:11 ` [PATCH v9 0/3] " Kavyasree.Kotagiri
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