From a60c1e6d6b682e432e4d6293da5566e0ddc7d3b8 Mon Sep 17 00:00:00 2001 From: Weijie Gao Date: Tue, 21 Apr 2020 09:28:32 +0200 Subject: [PATCH] mips: add a mtmips-specific field to architecture-specific global data SoCs of mtmips can use different CPU frequencies depending on the HW/SW configurations. For example mt7628 uses 580MHz clock if the input xtal frequency is 40MHz, and 575MHz clock if the xtal is 25MHz. Upon cold boot the CPU uses the xtal frequency directly. So hardcoding the timer frequency (half of the CPU frequency) in CONFIG_SYS_MIPS_TIMER_FREQ is not a good idea for this case. This patch adds a mtmips-specific field timer_freq to arch_global_data. This field will be used later in mtmips-specific get_tbclk() to provide accurate timer frequency in different boot stage. Reviewed-by: Stefan Roese Reviewed-by: Daniel Schwierzeck Signed-off-by: Weijie Gao --- arch/mips/include/asm/global_data.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/mips/include/asm/global_data.h b/arch/mips/include/asm/global_data.h index 7b4ad08..4c30fab 100644 --- a/arch/mips/include/asm/global_data.h +++ b/arch/mips/include/asm/global_data.h @@ -27,6 +27,9 @@ struct arch_global_data { #ifdef CONFIG_MIPS_L2_CACHE unsigned short l2_line_size; #endif +#ifdef CONFIG_ARCH_MTMIPS + unsigned long timer_freq; +#endif }; #include -- 2.7.4