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Documentation: dt: keystone: provide SoC specific compatible flags

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Keystone2 devices are used on more platforms than just Texas
Instruments reference evaluation platforms called EVMs. Providing a
generic compatible "ti,keystone" is not sufficient to differentiate
various SoC definitions possible on various platforms for the
following reasons:
a) Userspace applications have no way of knowing which SoC they are
functioning, providing the compatible matches provide a mechanism for
them to enable SoC specific functionality. Such userspace applications
are typically automated test framework or SoC custom hardware
acceleration entitlement from a common file system.
b) Provides an accurate hardware description. This allows
SoC specific logic to be run time handled based on
of_machine_is_compatible("ti,k2hk") or as needed for the dependent
processor instead of needing to use board dependent compatibles that
are needed now.

Hence, provide compatible matches for each SoC in the Keystone family.

Acked-By: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
This commit is contained in:
Nishanth Menon 2015-10-03 17:02:56 -07:00 committed by Santosh Shilimkar
parent 1a344e9b75
commit 2df7b0f0d2
1 changed files with 17 additions and 3 deletions
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20
Documentation/devicetree/bindings/arm/keystone/keystone.txt
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@ -9,12 +9,26 @@ Required properties:
the form "ti,keystone-*". Generic devices like gic, arch_timers, ns16550
type UART should use the specified compatible for those devices.
SoC families:
- Keystone 2 generic SoC:
compatible = "ti,keystone"
SoCs:
- Keystone 2 Hawking/Kepler
compatible = ti,k2hk", "ti,keystone"
- Keystone 2 Lamarr
compatible = ti,k2l", "ti,keystone"
- Keystone 2 Edison
compatible = ti,k2e", "ti,keystone"
Boards:
- Keystone 2 Hawking/Kepler EVM
compatible = "ti,k2hk-evm","ti,keystone"
compatible = "ti,k2hk-evm", "ti,k2hk", "ti,keystone"
- Keystone 2 Lamarr EVM
compatible = "ti,k2l-evm","ti,keystone"
compatible = "ti,k2l-evm", "ti, k2l", "ti,keystone"
- Keystone 2 Edison EVM
compatible = "ti,k2e-evm","ti,keystone"
compatible = "ti,k2e-evm", "ti,k2e", "ti,keystone"