]> git.dujemihanovic.xyz Git - u-boot.git/commitdiff
ARM: qemu-arm: Dynamically determine timer frequency
authorTuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Thu, 12 Apr 2018 01:24:45 +0000 (04:24 +0300)
committerTom Rini <trini@konsulko.com>
Sat, 28 Apr 2018 22:30:43 +0000 (18:30 -0400)
After commit 46fc679ede5f69 ("arm: timer: get frequency for arch timer
armv7 in cp15 cntfrq") the ARM architected timer driver knows how to
determine the timer frequency at runtime by reading the CNTFRQ register,
so we don't need to hardcode the timer frequency anymore.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
include/configs/qemu-arm.h

index 839bc10a184b58aa693b7f133b32e55ee067867a..b29a54ef892535d41722659807b9d5540d4ca0f5 100644 (file)
 #define CONFIG_SYS_LOAD_ADDR           (CONFIG_SYS_SDRAM_BASE + SZ_2M)
 #define CONFIG_SYS_MALLOC_LEN          SZ_16M
 
-/* QEMU implements a 62.5MHz architected timer */
-/* FIXME: can we rely on CNTFREQ instead of hardcoding this fact here? */
+/* For timer, QEMU emulates an ARMv7/ARMv8 architected timer */
 #define CONFIG_SYS_ARCH_TIMER
 #define CONFIG_SYS_HZ                       1000
-#define CONFIG_SYS_HZ_CLOCK                 62500000
 
 /* For block devices, QEMU emulates an ICH9 AHCI controller over PCI */
 #define CONFIG_SYS_SCSI_MAX_SCSI_ID 6