This patch adds the device tree binding doc for the Tegra
QSPI controller on Tegra210.
Signed-off-by: Tom Warren <twarren@xxxxxxxxxx>
---
Changes in v2:
- based it more on kernel's nvidia,tegra114-spi.txt binding
- changes based on prelim review by swarren@xxxxxxxxxx
Changes in v3:
- renamed to 'nvidia,tegra210-qspi.txt' to match kernel bindings
- more changes based on review from swarren@xxxxxxxxxx
Changes in v4:
- move 'clock' up under 'clock-names' entry
Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt | 42 ++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt
diff --git a/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt b/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt
new file mode 100644
index 0000000..fe1558f
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/nvidia,tegra210-qspi.txt
@@ -0,0 +1,42 @@
+NVIDIA Tegra QSPI controller.
+
+Required properties:
+- compatible : for Tegra210, must contain "nvidia,tegra210-qspi".
+- reg: Should contain QSPI registers location and length.
+- interrupts: Should contain QSPI interrupt.
+- clock-names : Must include the following entries:
+ - qspi
+- clocks : Must contain an entry for each entry in clock-names.
+ See ../clocks/clock-bindings.txt for details.
+- resets : Must contain an entry for each entry in reset-names.
+ See ../reset/reset.txt for details.
+- reset-names : Must include the following entries:
+ - qspi
+
+Optional properties:
+- dmas : Must contain an entry for each entry in clock-names.
+ See ../dma/dma.txt for details.
+- dma-names : Must include the following entries:
+ - rx
+ - tx
+
+Recommended properties:
+- spi-max-frequency: Definition as per spi-bus.txt
+
+Example:
+
+spi@70410000 {
+ compatible = "nvidia,tegra210-qspi";
+ reg = <0x0 0x70410000 0x0 0x1000>;
+ interrupts = <0 10 0x04>;
+ spi-max-frequency = <24000000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&tegra_car 211>;
+ clock-names = "qspi";
+ resets = <&tegra_car 211>;
+ reset-names = "qspi";
+ dmas = <&apbdma 16>, <&apbdma 16>;
+ dma-names = "rx", "tx";
+ status = "disabled";
+};
--
1.8.2.1.610.g562af5b
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