This patch adds the device tree binding doc for the Tegra
SPI/QSPI controllers on Tegra114 and Tegra210.
Signed-off-by: Tom Warren <twar...@nvidia.com>
---
Changes in v2:
- based it more on kernel's nvidia,tegra114-spi.txt binding
- changes based on prelim review by swar...@nvidia.com
doc/device-tree-bindings/spi/spi-tegra.txt | 60 ++++++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
create mode 100644 doc/device-tree-bindings/spi/spi-tegra.txt
diff --git a/doc/device-tree-bindings/spi/spi-tegra.txt
b/doc/device-tree-bindings/spi/spi-tegra.txt
new file mode 100644
index 0000000..3664267
--- /dev/null
+++ b/doc/device-tree-bindings/spi/spi-tegra.txt
@@ -0,0 +1,60 @@
+NVIDIA Tegra SPI/QSPI controller.
+
+Required properties:
+- compatible : should be one of the following:
+ "nvidia,tegra114-spi" (for Tegra114)
+ "nvidia,tegra210-qspi" (for Tegra210)
+- reg: Should contain SPI registers location and length.
+- interrupts: Should contain SPI interrupts.
+- clock-names : Must include the following entries:
+ - spi
+- 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:
+ - spi
+
+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@7000d600 {
+ compatible = "nvidia,tegra114-spi";
+ reg = <0x7000d600 0x200>;
+ interrupts = <0 82 0x04>;
+ spi-max-frequency = <25000000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clocks = <&tegra_car 44>;
+ clock-names = "spi";
+ resets = <&tegra_car 44>;
+ reset-names = "spi";
+ dmas = <&apbdma 16>, <&apbdma 16>;
+ dma-names = "rx", "tx";
+ status = "disabled";
+};
+
+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 = "spi";
+ resets = <&tegra_car 211>;
+ reset-names = "spi";
+ dmas = <&apbdma 16>, <&apbdma 16>;
+ dma-names = "rx", "tx";
+ status = "disabled";
+};
--
1.8.2.1.610.g562af5b
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