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soc: arm: replace DT_CPU_CLOCK_FREQUENCY with new dt macros

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Replace DT_CPU_CLOCK_FREQUENCY with a PATH based reference to cpu@0
(DT_PATH(cpus, cpu_0)) and than getting the clock_frequency property:

DT_CPU_CLOCK_FREQUENCY -> DT_PROP(DT_PATH(cpus, cpu_0), clock_frequency)

This lets us remove DT_CPU_CLOCK_FREQUENCY from dts_fixup.h.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2020-04-22 07:06:40 -05:00 • committed by Kumar Gala
commit 8b6acb5e91
13 changed files with 14 additions and 36 deletions
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11
subsys/logging/log_backend_swo.c
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@ -18,8 +18,8 @@
* this frequency should much the one set by the SWO viewer program.
*
* The initialization code assumes that SWO core frequency is equal to HCLK
* as defined by DT_CPU_CLOCK_FREQUENCY. This may require additional,
* vendor specific configuration.
* as defined by the clock-frequency property in the CPU node. This may require
* additional, vendor specific configuration.
*/
#include <logging/log_backend.h>
@ -36,7 +36,12 @@
#if CONFIG_LOG_BACKEND_SWO_FREQ_HZ == 0
#define SWO_FREQ_DIV 1
#else
#define SWO_FREQ (DT_CPU_CLOCK_FREQUENCY + (CONFIG_LOG_BACKEND_SWO_FREQ_HZ / 2))
#if DT_NODE_HAS_PROP(DT_PATH(cpus, cpu_0), clock_frequency)
#define CPU_FREQ DT_PROP(DT_PATH(cpus, cpu_0), clock_frequency)
#else
#error "Missing DT 'clock-frequency' property on cpu@0 node"
#endif
#define SWO_FREQ (CPU_FREQ + (CONFIG_LOG_BACKEND_SWO_FREQ_HZ / 2))
#define SWO_FREQ_DIV (SWO_FREQ / CONFIG_LOG_BACKEND_SWO_FREQ_HZ)
#if SWO_FREQ_DIV > 0xFFFF
#error CONFIG_LOG_BACKEND_SWO_FREQ_HZ is too low. SWO clock divider is 16-bit. \