linux-kernel - [PATCH 1/2] dt-bindings: mmc: sdhci-atmel: Convert to json schema

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Message-ID: <20240830-atmel-sdhci-v1-1-01e3ec8c9804@microchip.com>
Date: Fri, 30 Aug 2024 13:44:58 +0530
From: Dharma Balasubiramani <dharma.b@...rochip.com>
To: Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>, Alexandre Belloni
	<alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev>,
	Aubin Constans <aubin.constans@...rochip.com>
CC: <linux-mmc@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	Dharma Balasubiramani <dharma.b@...rochip.com>
Subject: [PATCH 1/2] dt-bindings: mmc: sdhci-atmel: Convert to json schema

Convert sdhci-atmel documentation to yaml format. The new file will inherit
from sdhci-common.yaml.

Note: Add microchip,sama7g5-sdhci to compatible list as we already use it
in the DT.

Signed-off-by: Dharma Balasubiramani <dharma.b@...rochip.com>
---
 .../bindings/mmc/atmel,sama5d2-sdhci.yaml          | 98 ++++++++++++++++++++++
 1 file changed, 98 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/atmel,sama5d2-sdhci.yaml b/Documentation/devicetree/bindings/mmc/atmel,sama5d2-sdhci.yaml
new file mode 100644
index 000000000000..91d18b2545e1
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/atmel,sama5d2-sdhci.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/atmel,sama5d2-sdhci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel SDHCI controller
+
+maintainers:
+  - Aubin Constans <aubin.constans@...rochip.com>
+  - Nicolas Ferre <nicolas.ferre@...rochip.com>
+
+description:
+  Bindings for the SDHCI controller found in Atmel/Microchip SoCs.
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - atmel,sama5d2-sdhci
+          - atmel,sama5d3-sdhci
+          - atmel,sama5d4-sdhci
+          - microchip,sam9x60-sdhci
+      - items:
+          - enum:
+              - microchip,sama7g5-sdhci
+          - const: microchip,sam9x60-sdhci
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+    maxItems: 3
+    description: |
+      The sama5d2 family includes three clocks: `hclock`, `multclk`, and `baseclk`.
+      For other families, including sam9x60 and sam9x7, only `hclock` and `multclk` are used.
+
+  clock-names:
+    minItems: 2
+    maxItems: 3
+
+  microchip,sdcal-inverted:
+    type: boolean
+    description:
+      When present, polarity on the SDCAL SoC pin is inverted.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+allOf:
+  - $ref: sdhci-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - atmel,sama5d2-sdhci
+    then:
+      properties:
+        clocks:
+          maxItems: 3
+        clock-names:
+          items:
+            - const: hclock
+            - const: multclk
+            - const: baseclk
+    else:
+      properties:
+        clocks:
+          maxItems: 2
+        clock-names:
+          items:
+            - const: hclock
+            - const: multclk
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/at91.h>
+    mmc@...00000 {
+        compatible = "atmel,sama5d2-sdhci";
+        reg = <0xa0000000 0x300>;
+        interrupts = <31 IRQ_TYPE_LEVEL_HIGH 0>;
+        clocks = <&sdmmc0_hclk>, <&sdmmc0_gclk>, <&main>;
+        clock-names = "hclock", "multclk", "baseclk";
+        assigned-clocks = <&sdmmc0_gclk>;
+        assigned-clock-rates = <480000000>;
+    };

-- 
2.43.0