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authorAngelo Dureghello <angelo@sysam.it>2019-03-13 21:46:41 +0100
committerTom Rini <trini@konsulko.com>2019-05-23 23:14:38 -0400
commitb5867b1a7a4c45c6a5a6a97f866dd180631ebf2b (patch)
tree4949699a268aad5c2b143bf296d47084c0354e08 /doc/device-tree-bindings
parent40920bdecc4e1b7096de6f546d7b5c2185554ba6 (diff)
m68k: add basic set of devicetrees
This patch adds a basic group of devicetrees, one for each cpu family, including actually just uart and dspi devices, since these are the drivers supporting devicetree (support added in this patch-set). Acked-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Angelo Dureghello <angelo@sysam.it> Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'doc/device-tree-bindings')
-rw-r--r--doc/device-tree-bindings/serial/mcf-uart.txt19
-rw-r--r--doc/device-tree-bindings/spi/spi-mcf-dspi.txt30
2 files changed, 49 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/serial/mcf-uart.txt b/doc/device-tree-bindings/serial/mcf-uart.txt
new file mode 100644
index 0000000000..d73f764c01
--- /dev/null
+++ b/doc/device-tree-bindings/serial/mcf-uart.txt
@@ -0,0 +1,19 @@
+Freescale ColdFire UART
+
+Required properties:
+- compatible : should be "fsl,mcf-uart"
+- reg: start address and size of the registers
+
+Example:
+
+soc {
+ compatible = "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ uart0: uart@fc060000 {
+ compatible = "fsl,mcf-uart";
+ reg = <0xfc060000 0x40>;
+ status = "disabled";
+ };
+};
diff --git a/doc/device-tree-bindings/spi/spi-mcf-dspi.txt b/doc/device-tree-bindings/spi/spi-mcf-dspi.txt
new file mode 100644
index 0000000000..860eb8ac85
--- /dev/null
+++ b/doc/device-tree-bindings/spi/spi-mcf-dspi.txt
@@ -0,0 +1,30 @@
+Freescale ColdFire DSPI controller
+
+Required properties:
+- compatible : "fsl,mcf-dspi"
+- #address-cells: <1>, as required by generic SPI binding
+- #size-cells: <0>, also as required by generic SPI binding
+- reg : offset and length of the register set for the device
+
+Optional properties:
+- spi-max-frequency : max supported spi frequency
+- num-cs : the number of the chipselect signals
+- spi-mode: spi motorola mode, 0 to 3
+- ctar-params: CTAR0 to 7 register configuration, as an array
+ of 8 integer fields for each register, where each register
+ is defined as: <fmsz, pcssck, pasc, pdt, cssck, asc, dt, br>.
+
+Example:
+
+dspi0: dspi@fc05c000 {
+ compatible = "fsl,mcf-dspi";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0xfc05c000 0x100>;
+ spi-max-frequency = <50000000>;
+ num-cs = <4>;
+ spi-mode = <0>;
+ ctar-fields = <7, 0, 0, 0, 0, 0, 1, 6>,
+ <7, 0, 0, 0, 0, 0, 1, 6>,
+ <7, 0, 0, 0, 0, 0, 1, 6>;
+};