S3C2416: Enable armdiv and armclk
From: Heiko Stuebner <heiko.stuebner@...> Date: Wed, 28 Sep 2011 08:33:12 +0200
To enable cpu frequency scaling on the S3C2416/2450 it is necessary to define the arm-divider and armclock. The layout of the clocks (i.e. msysclk -> armdiv -> armclk) is the same on all three architectures (S3C2443/2416/2450) and only the possible dividers for armdiv differ. Therefore it is possible to move the armdiv and armclk to common code with only the divider table definition remaining in the respective clock.c-files. The s3c2443_common_init_clocks method is modified to make it possible to transmit the divider table to the common code. As the armdiv is available in common code now, the fdiv function pointer passed to s3c2443_common_init_clocks becomes obsolete and is therefore removed as the fclk rate can be set by a clk_get_rate call. It works as expected on S3C2416, is compile-tested on S3C2443 and checkpatch was happy. Heiko Stuebner (8): S3C2416: Add armdiv_mask constant. S3C2443: Add infrastructure to transmit armdiv to common code S3C2443: Move clk_arm and clk_armdiv to common code. S3C2416: Add comment describing the armdiv/armclk. S3C2443: Add get_rate operation for clk_armdiv S3C2443: handle unset armdiv values gracefully. S3C2443: Accommodate cpufreq frequency scheme in armdiv S3C2443: use clk_get_rate to init fclk in common_setup_clocks .../mach-s3c2410/include/mach/regs-s3c2443-clock.h | 1 + arch/arm/mach-s3c2416/clock.c | 21 ++-- arch/arm/mach-s3c2443/clock.c | 98 +-------------- arch/arm/plat-s3c24xx/include/plat/s3c2443.h | 7 +- arch/arm/plat-s3c24xx/s3c2443-clock.c | 134 +++++++++++++++++++- 5 files changed, 152 insertions(+), 109 deletions(-) -- 1.7.5.4
Patches in this set
- [0001] S3C2416: Add armdiv_mask constant (raw)
- [0002] S3C2443: Add infrastructure to transmit armdiv to common code (raw)
- [0003] S3C2443: Move clk_arm and clk_armdiv to common code (raw)
- [0004] S3C2416: Add comment describing the armdiv/armclk (raw)
- [0005] S3C2443: Add get_rate operation for clk_armdiv (raw)
- [0006] S3C2443: handle unset armdiv values gracefully (raw)
- [0007] S3C2443: Accommodate cpufreq frequency scheme in armdiv (raw)
- [0008] S3C2443: use clk_get_rate to init fclk in common_setup_clocks (raw)
Statistics
- 8 individual patches
- 166 lines added
- 123 lines removed