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author | Sascha Hauer <s.hauer@pengutronix.de> | 2015-06-17 13:52:37 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2015-06-17 13:52:37 +0200 |
commit | 8ed978b79062787b9e911cf6d5ff4aebce484660 (patch) | |
tree | 4af532a17dd9c4e8f50bfc319cba7aaa272afb9f /dts/Bindings/mtd/jedec,spi-nor.txt | |
parent | a3a17dfd5a2c5df9626c844dcbef3bb2e9cce14c (diff) | |
download | barebox-8ed978b79062787b9e911cf6d5ff4aebce484660.tar.gz barebox-8ed978b79062787b9e911cf6d5ff4aebce484660.tar.xz |
dts: update to v4.1-rc4
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/mtd/jedec,spi-nor.txt')
-rw-r--r-- | dts/Bindings/mtd/jedec,spi-nor.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/dts/Bindings/mtd/jedec,spi-nor.txt b/dts/Bindings/mtd/jedec,spi-nor.txt new file mode 100644 index 0000000000..2bee68103b --- /dev/null +++ b/dts/Bindings/mtd/jedec,spi-nor.txt @@ -0,0 +1,32 @@ +* MTD SPI driver for ST M25Pxx (and similar) serial flash chips + +Required properties: +- #address-cells, #size-cells : Must be present if the device has sub-nodes + representing partitions. +- compatible : May include a device-specific string consisting of the + manufacturer and name of the chip. Bear in mind the DT binding + is not Linux-only, but in case of Linux, see the "m25p_ids" + table in drivers/mtd/devices/m25p80.c for the list of supported + chips. + Must also include "jedec,spi-nor" for any SPI NOR flash that can + be identified by the JEDEC READ ID opcode (0x9F). +- reg : Chip-Select number +- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at + +Optional properties: +- m25p,fast-read : Use the "fast read" opcode to read data from the chip instead + of the usual "read" opcode. This opcode is not supported by + all chips and support for it can not be detected at runtime. + Refer to your chips' datasheet to check if this is supported + by your chip. + +Example: + + flash: m25p80@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "spansion,m25p80", "jedec,spi-nor"; + reg = <0>; + spi-max-frequency = <40000000>; + m25p,fast-read; + }; |