Convert spi-davinci.txt to ti,dm6441-spi.yaml. Signed-off-by: Andrew Davis <afd@xxxxxx> --- Changes for v2: - Fix typo s/dm6446/dm6441 .../devicetree/bindings/spi/spi-davinci.txt | 100 ------------------ .../bindings/spi/ti,dm6441-spi.yaml | 76 +++++++++++++ 2 files changed, 76 insertions(+), 100 deletions(-) delete mode 100644 Documentation/devicetree/bindings/spi/spi-davinci.txt create mode 100644 Documentation/devicetree/bindings/spi/ti,dm6441-spi.yaml diff --git a/Documentation/devicetree/bindings/spi/spi-davinci.txt b/Documentation/devicetree/bindings/spi/spi-davinci.txt deleted file mode 100644 index f012888656eca..0000000000000 --- a/Documentation/devicetree/bindings/spi/spi-davinci.txt +++ /dev/null @@ -1,100 +0,0 @@ -Davinci SPI controller device bindings - -Links on DM: -Keystone 2 - https://www.ti.com/lit/ug/sprugp2a/sprugp2a.pdf -dm644x - https://www.ti.com/lit/ug/sprue32a/sprue32a.pdf -OMAP-L138/da830 - http://www.ti.com/lit/ug/spruh77a/spruh77a.pdf - -Required properties: -- #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. -- compatible: - - "ti,dm6441-spi" for SPI used similar to that on DM644x SoC family - - "ti,da830-spi" for SPI used similar to that on DA8xx SoC family - - "ti,keystone-spi" for SPI used similar to that on Keystone2 SoC - family -- reg: Offset and length of SPI controller register space -- num-cs: Number of chip selects. This includes internal as well as - GPIO chip selects. -- ti,davinci-spi-intr-line: interrupt line used to connect the SPI - IP to the interrupt controller within the SoC. Possible values - are 0 and 1. Manual says one of the two possible interrupt - lines can be tied to the interrupt controller. Set this - based on a specific SoC configuration. -- interrupts: interrupt number mapped to CPU. -- clocks: spi clk phandle - For 66AK2G this property should be set per binding, - Documentation/devicetree/bindings/clock/ti,sci-clk.yaml - -SoC-specific Required Properties: - -The following are mandatory properties for Keystone 2 66AK2G SoCs only: - -- power-domains: Should contain a phandle to a PM domain provider node - and an args specifier containing the SPI device id - value. This property is as per the binding, - -Optional: -- cs-gpios: gpio chip selects - For example to have 3 internal CS and 2 GPIO CS, user could define - cs-gpios = <0>, <0>, <0>, <&gpio1 30 0>, <&gpio1 31 0>; - where first three are internal CS and last two are GPIO CS. - -Optional properties for slave devices: -SPI slave nodes can contain the following properties. -Not all SPI Peripherals from Texas Instruments support this. -Please check SPI peripheral documentation for a device before using these. - -- ti,spi-wdelay : delay between transmission of words - (SPIFMTn.WDELAY, SPIDAT1.WDEL) must be specified in number of SPI module - clock periods. - - delay = WDELAY * SPI_module_clock_period + 2 * SPI_module_clock_period - -Below is timing diagram which shows functional meaning of -"ti,spi-wdelay" parameter. - - +-+ +-+ +-+ +-+ +-+ +-+ +-+ +-+ -SPI_CLK | | | | | | | | | | | | | | | | - +----------+ +-+ +-+ +-+ +-+ +---------------------------+ +-+ +-+ +- - -SPI_SOMI/SIMO+-----------------+ +----------- - +----------+ word1 +---------------------------+word2 - +-----------------+ +----------- - WDELAY - <--------------------------> - -Example of a NOR flash slave device (n25q032) connected to DaVinci -SPI controller device over the SPI bus. - -spi0:spi@20bf0000 { - #address-cells = <1>; - #size-cells = <0>; - compatible = "ti,dm6446-spi"; - reg = <0x20BF0000 0x1000>; - num-cs = <4>; - ti,davinci-spi-intr-line = <0>; - interrupts = <338>; - clocks = <&clkspi>; - - flash: flash@0 { - #address-cells = <1>; - #size-cells = <1>; - compatible = "st,m25p32"; - spi-max-frequency = <25000000>; - reg = <0>; - ti,spi-wdelay = <8>; - - partition@0 { - label = "u-boot-spl"; - reg = <0x0 0x80000>; - read-only; - }; - - partition@1 { - label = "test"; - reg = <0x80000 0x380000>; - }; - }; -}; diff --git a/Documentation/devicetree/bindings/spi/ti,dm6441-spi.yaml b/Documentation/devicetree/bindings/spi/ti,dm6441-spi.yaml new file mode 100644 index 0000000000000..a71e51fb87e4f --- /dev/null +++ b/Documentation/devicetree/bindings/spi/ti,dm6441-spi.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/ti,dm6441-spi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Davinci SPI Controller + +description: + SPI controllers on TI Davinci, OMAP-L138, and Keystone2 SoCs. + +maintainers: + - Andrew Davis <afd@xxxxxx> + +allOf: + - $ref: spi-controller.yaml# + +properties: + compatible: + items: + - enum: + - ti,dm6441-spi # for SPI used on DM644x SoC family + - ti,da830-spi # for SPI used on DA8xx SoC family + - ti,keystone-spi # for SPI used on Keystone2 SoC family + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-names: + maxItems: 1 + + clocks: + maxItems: 1 + + power-domains: + maxItems: 1 + + ti,davinci-spi-intr-line: + description: + Interrupt line used to connect the SPI IP to the interrupt controller + within the SoC. Possible values are 0 and 1. Manual says one of the + two possible interrupt lines can be tied to the interrupt controller. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + +required: + - compatible + - reg + - interrupts + - clocks + +unevaluatedProperties: false + +examples: + - | + spi@20bf0000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "ti,dm6441-spi"; + reg = <0x20bf0000 0x1000>; + interrupts = <338>; + clocks = <&clkspi>; + + num-cs = <4>; + ti,davinci-spi-intr-line = <0>; + + flash@0 { + compatible = "st,m25p32"; + spi-max-frequency = <50000000>; + reg = <0>; + ti,spi-wdelay = <8>; + }; + }; -- 2.39.2
