linux-kernel - [PATCH v1 2/7] dt-bindings: spi: Add Tegra QSPI device tree binding

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Message-ID: <1606857168-5839-3-git-send-email-skomatineni@nvidia.com>
Date:   Tue, 1 Dec 2020 13:12:43 -0800
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     <thierry.reding@...il.com>, <jonathanh@...dia.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>
CC:     <skomatineni@...dia.com>, <linux-spi@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH v1 2/7] dt-bindings: spi: Add Tegra QSPI device tree binding

This patch adds YAML based device tree binding document for Tegra
QSPI driver.

Signed-off-by: Sowjanya Komatineni <skomatineni@...dia.com>
---
 .../devicetree/bindings/spi/nvidia,tegra-qspi.yaml | 77 ++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml

diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml b/Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml
new file mode 100644
index 0000000..038a085
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/nvidia,tegra-qspi.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/nvidia,tegra-qspi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra Quad SPI Controller
+
+maintainers:
+  - Thierry Reding <thierry.reding@...il.com>
+  - Jonathan Hunter <jonathanh@...dia.com>
+
+properties:
+  compatible:
+    enum:
+      - nvidia,tegra210-qspi
+      - nvidia,tegra186-qspi
+      - nvidia,tegra194-qspi
+
+  reg:
+    items:
+      - description: QSPI registers
+
+  interrupts:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: qspi
+
+  clocks:
+    maxItems: 1
+
+  reset-names:
+    minItems: 1
+    items:
+      - const: qspi
+
+  resets:
+    maxItems: 1
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: rx
+      - const: tx
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clock-names
+  - clocks
+  - reset-names
+  - resets
+
+additionalProperties: true
+
+examples:
+  - |
+    #include <dt-bindings/clock/tegra210-car.h>
+    #include <dt-bindings/reset/tegra210-car.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    spi@...10000 {
+            compatible = "nvidia,tegra210-qspi";
+            reg = <0x70410000 0x1000>;
+            interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
+            clocks = <&tegra_car TEGRA210_CLK_QSPI>;
+            clock-names = "qspi";
+            resets = <&tegra_car 211>;
+            reset-names = "qspi";
+            dmas = <&apbdma 5>, <&apbdma 5>;
+            dma-names = "rx", "tx";
+    };
-- 
2.7.4