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ARM: shmobile: r8a7779: add each clocks ratio on comment area 

Adding comment describing the r8a7779 clock frequencies depending on
MD pin settings.

Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Kuninori Morimoto 2013-04-04 00:07:14 -07:00 committed by Simon Horman
parent 8585deb185
commit f0ff5a0a82
1 changed files with 19 additions and 0 deletions
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19
arch/arm/mach-shmobile/clock-r8a7779.c
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@ -26,6 +26,25 @@
#include <mach/clock.h> #include <mach/clock.h>
#include <mach/common.h> #include <mach/common.h>
/*
* MD1 = 1 MD1 = 0
* (PLLA = 1500) (PLLA = 1600)
* (MHz) (MHz)
*------------------------------------------------+--------------------
* clkz 1000 (2/3) 800 (1/2)
* clkzs 250 (1/6) 200 (1/8)
* clki 750 (1/2) 800 (1/2)
* clks 250 (1/6) 200 (1/8)
* clks1 125 (1/12) 100 (1/16)
* clks3 187.5 (1/8) 200 (1/8)
* clks4 93.7 (1/16) 100 (1/16)
* clkp 62.5 (1/24) 50 (1/32)
* clkg 62.5 (1/24) 66.6 (1/24)
* clkb, CLKOUT
* (MD2 = 0) 62.5 (1/24) 66.6 (1/24)
* (MD2 = 1) 41.6 (1/36) 50 (1/32)
*/
#define MD(nr) BIT(nr) #define MD(nr) BIT(nr)
#define FRQMR IOMEM(0xffc80014) #define FRQMR IOMEM(0xffc80014)