diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 14:23:01 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 14:23:01 -0700 |
commit | ee1a8d402e7e204d57fb108aa40003b6d1633036 (patch) | |
tree | 3abf4be63d11bbbd04c89bd668a17533f942b911 /Documentation/devicetree/bindings/bus | |
parent | 40e71e7015ab85c8606f50736525220948a3b24b (diff) | |
parent | 9686bb66a4c50e43ffee903a9fc62237ee2de1e6 (diff) |
Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree changes from Arnd Bergmann:
"These changes from 30 individual branches for the most part update
device tree files, but there are also a few source code changes that
have crept in this time, usually in order to atomically move over a
driver from using hardcoded data to DT probing.
A number of platforms change their DT files to use the C preprocessor,
which is causing a bit of churn, but that is hopefully only this once"
* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (372 commits)
ARM: at91: dt: rm9200ek: add spi support
ARM: at91: dt: rm9200: add spi support
ARM: at91/DT: at91sam9n12: add SPI DMA client infos
ARM: at91/DT: sama5d3: add SPI DMA client infos
ARM: at91/DT: fix SPI compatibility string
ARM: Kirkwood: Fix the internal register ranges translation
ARM: dts: bcm281xx: change comment to C89 style
ARM: mmc: bcm281xx SDHCI driver (dt mods)
ARM: nomadik: add the new clocks to the device tree
clk: nomadik: implement the Nomadik clocks properly
ARM: dts: omap5-uevm: Provide USB Host PHY clock frequency
ARM: dts: omap4-panda: Fix DVI EDID reads
ARM: dts: omap4-panda: Add USB Host support
arm: mvebu: enable mini-PCIe connectors on Armada 370 RD
ARM: shmobile: irqpin: add a DT property to enable masking on parent
ARM: dts: AM43x EPOS EVM support
ARM: dts: OMAP5: Add bandgap DT entry
ARM: dts: AM33XX: Add pinmux configuration for CPSW to am335x EVM
ARM: dts: AM33XX: Add pinmux configuration for CPSW to EVMsk
ARM: dts: AM33XX: Add pinmux configuration for CPSW to beaglebone
...
Diffstat (limited to 'Documentation/devicetree/bindings/bus')
-rw-r--r-- | Documentation/devicetree/bindings/bus/imx-weim.txt | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/bus/imx-weim.txt b/Documentation/devicetree/bindings/bus/imx-weim.txt new file mode 100644 index 000000000000..cedc2a9c4785 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/imx-weim.txt @@ -0,0 +1,49 @@ +Device tree bindings for i.MX Wireless External Interface Module (WEIM) + +The term "wireless" does not imply that the WEIM is literally an interface +without wires. It simply means that this module was originally designed for +wireless and mobile applications that use low-power technology. + +The actual devices are instantiated from the child nodes of a WEIM node. + +Required properties: + + - compatible: Should be set to "fsl,imx6q-weim" + - reg: A resource specifier for the register space + (see the example below) + - clocks: the clock, see the example below. + - #address-cells: Must be set to 2 to allow memory address translation + - #size-cells: Must be set to 1 to allow CS address passing + - ranges: Must be set up to reflect the memory layout with four + integer values for each chip-select line in use: + + <cs-number> 0 <physical address of mapping> <size> + +Timing property for child nodes. It is mandatory, not optional. + + - fsl,weim-cs-timing: The timing array, contains 6 timing values for the + child node. We can get the CS index from the child + node's "reg" property. This property contains the values + for the registers EIM_CSnGCR1, EIM_CSnGCR2, EIM_CSnRCR1, + EIM_CSnRCR2, EIM_CSnWCR1, EIM_CSnWCR2 in this order. + +Example for an imx6q-sabreauto board, the NOR flash connected to the WEIM: + + weim: weim@021b8000 { + compatible = "fsl,imx6q-weim"; + reg = <0x021b8000 0x4000>; + clocks = <&clks 196>; + #address-cells = <2>; + #size-cells = <1>; + ranges = <0 0 0x08000000 0x08000000>; + + nor@0,0 { + compatible = "cfi-flash"; + reg = <0 0 0x02000000>; + #address-cells = <1>; + #size-cells = <1>; + bank-width = <2>; + fsl,weim-cs-timing = <0x00620081 0x00000001 0x1c022000 + 0x0000c000 0x1404a38e 0x00000000>; + }; + }; |