@@ -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"
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> --- Changes since V2: - elaborated reasoning why this change is useful - highlighted potential userspace usage as well. - picked up Acked-by from Murali V1: https://patchwork.kernel.org/patch/7240891/ .../devicetree/bindings/arm/keystone/keystone.txt | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-)