Hi Martin,
Am 22.06.2015 um 15:40 schrieb kernel@xxxxxxxxxxxxxxxx:
From: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
Signed-off-by: Martin Sperl <kernel@xxxxxxxxxxxxxxxx>
---
.../bindings/spi/brcm,bcm2835-aux-spi.txt | 33 ++++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt
diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt
new file mode 100644
index 0000000..23e4138
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt
@@ -0,0 +1,33 @@
+Broadcom BCM2835 SPI1/2 controller
+
+The BCM2835 contains two forms of SPI master controller, one known simply as
+SPI0, and the other known as the "Universal SPI Master"; part of the
+auxiliary block. This binding applies to the SPI1/2 controller.
+
+Required properties:
+- compatible: Should be "brcm,bcm2835-aux-spi".
+- reg: Should contain register location and length for the spi block
+ as well as for the common aux block control
+- interrupts: Should contain shared interrupt of the aux block
+- clocks: The clock feeding the SPI controller.
+- gpio-cs: the gpio-cs (native cs is NOT supported)
do you mean "gpio-cs" or "cs-gpios" from spi/spi-bus.txt?
+
+Example:
+
+spi1@7e215080 {
+ compatible = "brcm,bcm2835-aux-spi";
+ reg = <0x7e215080 0x40>, <0x7e215000 0x08>;
+ interrupts = <1 29>;
+ clocks = <&clk_spi>;
+ #address-cells = <1>;
+ #size-cells = <0>;
Why is gpio-cs is missing in the examples, if it's required?
+};
+
+spi2@7e215080 {
spi2@7e2150c0 ?
+ compatible = "brcm,bcm2835-aux-spi";
+ reg = <0x7e2150c0 0x40>, <0x7e215000 0x08>;
+ interrupts = <1 29>;
+ clocks = <&clk_spi>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+};
Regards
Stefan
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