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| author |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-06-20 15:15:00 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2018-07-23 16:27:32 +1000 |
| commit | e13c542d5227481836e91f7b3a025e2c9092bc04 (patch) | |
| tree | 7af728514a297e12e3786a5f0dd471fc7895eda6 /Documentation/devicetree/bindings/fsi | |
| parent | fsi: sbefifo: Fix inconsistent use of ffdc mutex (diff) | |
| download | linux-dev-e13c542d5227481836e91f7b3a025e2c9092bc04.tar.xz linux-dev-e13c542d5227481836e91f7b3a025e2c9092bc04.zip | |
dt-bindings: fsi: Add optional chip-id to CFAMs
This represents a physical chip in the system and allows
a stable numbering scheme to be passed to udev for userspace
to recognize which chip is which.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/fsi')
| -rw-r--r-- | Documentation/devicetree/bindings/fsi/fsi.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/fsi/fsi.txt b/Documentation/devicetree/bindings/fsi/fsi.txt index ab516c673a4b..afb4eccab131 100644 --- a/Documentation/devicetree/bindings/fsi/fsi.txt +++ b/Documentation/devicetree/bindings/fsi/fsi.txt @@ -83,6 +83,10 @@ addresses and sizes in the slave address space: #address-cells = <1>; #size-cells = <1>; +Optionally, a slave can provide a global unique chip ID which is used to +identify the physical location of the chip in a system specific way + + chip-id = <0>; FSI engines (devices) --------------------- @@ -125,6 +129,7 @@ device tree if no extra platform information is required. reg = <0 0>; #address-cells = <1>; #size-cells = <1>; + chip-id = <0>; /* FSI engine at 0xc00, using a single page. In this example, * it's an I2C master controller, so subnodes describe the |