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authorTom Rini <[email protected]>2020-10-22 14:36:47 -0400
committerTom Rini <[email protected]>2020-10-22 14:36:47 -0400
commitae4fdd7b0432bcb0bc2fe7d90b6d3e92001ab478 (patch)
treee933e67609989d0e4960f1464384e9ff40732b30 /doc/device-tree-bindings
parentb90daf2743b38022bea8727ede867ad63e971db2 (diff)
parentdddfde5401ed5ad82c996b35b61dc4a45bb4e2b3 (diff)
Merge branch '2020-10-22-misc-changes'
- Assorted updates for Xen, IPQ40xx, ASpeed, Keymile - Assorted typo / documentation fixes - Fix default preboot cmd to act like before with USB_STORAGE set - A number of other bugfixes throughout the code
Diffstat (limited to 'doc/device-tree-bindings')
-rw-r--r--doc/device-tree-bindings/spi/spi-qup.txt33
1 files changed, 33 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/spi/spi-qup.txt b/doc/device-tree-bindings/spi/spi-qup.txt
new file mode 100644
index 00000000000..3697df26310
--- /dev/null
+++ b/doc/device-tree-bindings/spi/spi-qup.txt
@@ -0,0 +1,33 @@
+Qualcomm QUP SPI controller Device Tree Bindings
+-------------------------------------------
+
+Required properties:
+- compatible : Should be "qcom,spi-qup-v1.1.1", "qcom,spi-qup-v2.1.1"
+ or "qcom,spi-qup-v2.2.1"
+- reg : Physical base address and size of SPI registers map.
+- clock : Clock phandle (see clock bindings for details).
+- #address-cells : Number of cells required to define a chip select
+ address on the SPI bus. Should be set to 1.
+- #size-cells : Should be zero.
+- pinctrl-names : Must be "default"
+- pinctrl-n : At least one pinctrl phandle
+- cs-gpios : Should specify GPIOs used for chipselects.
+ The gpios will be referred to as reg = <index> in the
+ SPI child nodes.
+
+Optional properties:
+- num-cs : total number of chipselects
+
+Example:
+
+ blsp1_spi1: spi@78b5000 {
+ compatible = "qcom,spi-qup-v2.2.1";
+ reg = <0x78b5000 0x600>;
+ clock = <&gcc 23>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pinctrl-names = "spi";
+ pinctrl-0 = <&blsp_spi0>;
+ num-cs = <2>;
+ cs-gpios = <&soc_gpios 54 GPIO_ACTIVE_HIGH>, <&soc_gpios 4 GPIO_ACTIVE_HIGH>;
+ };