dm: cpu: Add timebase frequency to the platdata

This adds a timebase_freq member to the 'struct cpu_platdata', to
hold the "timebase-frequency" value in the cpu or /cpus node.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Anup Patel <anup@brainfault.org>

diff --git a/include/cpu.h b/include/cpu.h
index 367c5f4..28dd48f 100644 (file)
--- a/include/cpu.h
+++ b/include/cpu.h
@@ -14,6 +14,8 @@
  * @device_id:     Driver-defined device identifier
  * @family:        DMTF CPU Family identifier
  * @id:            DMTF CPU Processor identifier
+ * @timebase_freq: the current frequency at which the cpu timer timebase
+ *                registers are updated (in Hz)
  *
  * This can be accessed with dev_get_parent_platdata() for any UCLASS_CPU
  * device.
@@ -24,6 +26,7 @@ struct cpu_platdata {
        ulong device_id;
        u16 family;
        u32 id[2];
+       u32 timebase_freq;
 };
 
 /* CPU features - mostly just a placeholder for now */