Re: [PATCH 2/2] dt: brcm, bcm2835-aux-spi: add binding documentation for new spi-bcm2835aux

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




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
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux