From: Nishanth Menon Date: Sun, 4 Oct 2015 00:02:56 +0000 (-0700) Subject: Documentation: dt: keystone: provide SoC specific compatible flags X-Git-Tag: firefly_0821_release~176^2~728^2~40^2~4 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2df7b0f0d2268ecbcd59323fd09955e93d3fefbd;p=firefly-linux-kernel-4.4.55.git Documentation: dt: keystone: provide SoC specific compatible flags 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 Signed-off-by: Nishanth Menon Signed-off-by: Santosh Shilimkar --- diff --git a/Documentation/devicetree/bindings/arm/keystone/keystone.txt b/Documentation/devicetree/bindings/arm/keystone/keystone.txt index 59d7a46f85eb..800d2d02e27b 100644 --- a/Documentation/devicetree/bindings/arm/keystone/keystone.txt +++ b/Documentation/devicetree/bindings/arm/keystone/keystone.txt @@ -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"