Re: [PATCH 2/2] dt: brcm, bcm2835-aux-spi: add binding documentation for new spi-bcm2835aux
From: Stefan Wahren <hidden>
Date: 2015-06-22 17:55:55
Also in:
linux-spi
Hi Martin, Am 22.06.2015 um 15:40 schrieb kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org:
quoted hunk
From: Martin Sperl <redacted> Signed-off-by: Martin Sperl <redacted> --- .../bindings/spi/brcm,bcm2835-aux-spi.txt | 33 ++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txtdiff --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>; +};
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