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U-boot for ODROID
Project Info
- Development Status: Beta
- License: GPL v2
- Operating System: Linux
- Programming Language: C
- Topic: Platform SW
- User Interface: Text-based Console
- Member count : 5
- Registered: : 2009.11.03
- Activity Percentile: : 80%
CPU Frequency changing ¶
== Change from 833Mhz to 667Mhz (down clocking)==
Open hkdkc100.h of u-boot ¶
$ vi include/configs/hkdkc100.h
hkdkc100.h Modification ¶
Comment out #define CONFIG_CLK_833_166_66 and uncomment #define CONFIG_CLK_666_166_66 as below.
#define CONFIG_CLK_666_166_66
//#define CONFIG_CLK_833_166_66
//#define CONFIG_HCLKD0_222 /* DDR bus clock = 222MHz */
#if defined(CONFIG_CLK_666_166_66)
#define APLL_MDIV 444
#define APLL_PDIV 4
#define APLL_SDIV 0
#elif defined(CONFIG_CLK_833_166_66)
#define APLL_MDIV 417
#define APLL_PDIV 3
#define APLL_SDIV 0
#endif
//#define CONFIG_CLK_833_166_66
//#define CONFIG_HCLKD0_222 /* DDR bus clock = 222MHz */
#if defined(CONFIG_CLK_666_166_66)
#define APLL_MDIV 444
#define APLL_PDIV 4
#define APLL_SDIV 0
#elif defined(CONFIG_CLK_833_166_66)
#define APLL_MDIV 417
#define APLL_PDIV 3
#define APLL_SDIV 0
#endif
Rebuild ¶
$ make clean $ make