u-boot/doc/device-tree-bindings/spi/spi-mcf-dspi.txt
Angelo Dureghello b5867b1a7a 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>
2019-05-23 23:14:38 -04:00

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Text

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>;
};