diff options
Diffstat (limited to 'arch/arc/include/asm/serial.h')
| -rw-r--r-- | arch/arc/include/asm/serial.h | 23 |
1 files changed, 5 insertions, 18 deletions
diff --git a/arch/arc/include/asm/serial.h b/arch/arc/include/asm/serial.h index 602b0970a764..744a6ae15754 100644 --- a/arch/arc/include/asm/serial.h +++ b/arch/arc/include/asm/serial.h @@ -10,26 +10,13 @@ #define _ASM_ARC_SERIAL_H /* - * early-8250 requires BASE_BAUD to be defined and includes this header. - * We put in a typical value: - * (core clk / 16) - i.e. UART samples 16 times per sec. - * Athough in multi-platform-image this might not work, specially if the - * clk driving the UART is different. - * We can't use DeviceTree as this is typically for early serial. + * early 8250 (now earlycon) requires BASE_BAUD to be defined in this header. + * However to still determine it dynamically (for multi-platform images) + * we do this in a helper by parsing the FDT early */ -#include <asm/clk.h> +extern unsigned int __init arc_early_base_baud(void); -#define BASE_BAUD (arc_get_core_freq() / 16) - -/* - * This is definitely going to break early 8250 consoles on multi-platform - * images but hey, it won't add any code complexity for a debug feature of - * one broken driver. - */ -#ifdef CONFIG_ARC_PLAT_TB10X -#undef BASE_BAUD -#define BASE_BAUD (arc_get_core_freq() / 16 / 3) -#endif +#define BASE_BAUD arc_early_base_baud() #endif /* _ASM_ARC_SERIAL_H */ |