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Message-Id: <20241105-asahi-spi-v4-1-d9734f089fc9@jannau.net>
Date: Tue, 05 Nov 2024 09:08:29 +0100
From: Janne Grunau via B4 Relay <devnull+j.jannau.net@...nel.org>
To: Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
Alyssa Rosenzweig <alyssa@...enzweig.io>, Mark Brown <broonie@...nel.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Janne Grunau <j@...nau.net>,
Nick Chan <towinchenmi@...il.com>,
Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v4 1/3] dt-bindings: spi: apple,spi: Add binding for Apple
SPI controllers
From: Hector Martin <marcan@...can.st>
The Apple SPI controller is present in SoCs such as the M1 (t8103) and
M1 Pro/Max (t600x). This controller uses one IRQ and one clock, and
doesn't need any special properties, so the binding is trivial.
Signed-off-by: Hector Martin <marcan@...can.st>
Reviewed-by: Rob Herring <robh@...nel.org>
Acked-by: Nick Chan <towinchenmi@...il.com>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
Signed-off-by: Janne Grunau <j@...nau.net>
---
.../devicetree/bindings/spi/apple,spi.yaml | 62 ++++++++++++++++++++++
1 file changed, 62 insertions(+)
diff --git a/Documentation/devicetree/bindings/spi/apple,spi.yaml b/Documentation/devicetree/bindings/spi/apple,spi.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..7bef605a296353a62252282af4ba45a71b20b7b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/apple,spi.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/apple,spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple ARM SoC SPI controller
+
+allOf:
+ - $ref: spi-controller.yaml#
+
+maintainers:
+ - Hector Martin <marcan@...can.st>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - apple,t8103-spi
+ - apple,t8112-spi
+ - apple,t6000-spi
+ - const: apple,spi
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/apple-aic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ spi@...104000 {
+ compatible = "apple,t6000-spi", "apple,spi";
+ reg = <0x3 0x9b104000 0x0 0x4000>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 0 1107 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&clk>;
+ };
+ };
--
2.47.0
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