Add bindings for SPI NAND chips. Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxx> --- Changes in v8: - Fixed a typo in the commit message --- Documentation/devicetree/bindings/mtd/spi-nand.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/spi-nand.txt diff --git a/Documentation/devicetree/bindings/mtd/spi-nand.txt b/Documentation/devicetree/bindings/mtd/spi-nand.txt new file mode 100644 index 000000000000..d55f80196c63 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/spi-nand.txt @@ -0,0 +1,27 @@ +SPI NAND flash + +Required properties: +- compatible: should be "spi-nand" +- reg: should encode the chip-select line used to access the NAND chip + +Optional properties +- spi-max-frequency: maximum frequency of the SPI bus the chip can operate at. + This should encode board limitations (i.e. max freq can't + be achieved due to crosstalk on IO lines). + When unspecified, the driver assumes the chip can run at + the max frequency defined in the spec (information + extracted chip detection time). +- spi-tx-bus-width: The bus width (number of data wires) that is used for MOSI. + Only encodes the board constraints (i.e. when not all IO + signals are routed on the board). Device constraints are + extracted when detecting the chip, and controller + constraints are exposed by the SPI mem controller. If this + property is missing that means no constraint at the board + level. +- spi-rx-bus-width: The bus width (number of data wires) that is used for MISO. + Only encodes the board constraints (i.e. when not all IO + signals are routed on the board). Device constraints are + extracted when detecting the chip, and controller + constraints are exposed by the SPI mem controller. If this + property is missing that means no constraint at the board + level. -- 2.14.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
