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powerpc/qixis: add clock measurement registers

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QIXIS includes frequency measurement functions for each major processor
clock input. After reset (and after clocks are stable), QIXIS measures
the clocks against a reference frequency and stores the results in
CLK_FREQ registers. A base register supplies a multiplier which allows
directly obtaining the measured value, without requiring knowledge of
the target system or QIXIS core frequency.

Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Ed Swarthout 2013-03-25 07:40:09 +00:00 • committed by Andy Fleming
parent 1b294b7a93
commit 428ea86c64
1 changed files with 5 additions and 1 deletions
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6
board/freescale/common/qixis.h
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@ -78,7 +78,11 @@ struct qixis {
u8 trig_stat;
u8 res12[3];
u8 trig_ctr[4];
u8 res13[48];
u8 res13[16];
u8 clk_freq[6]; /* Clock Measurement Registers */
u8 res_c6[8];
u8 clk_base[2]; /* Clock Frequency Base Reg */
u8 res_d0[16];
u8 aux2[4]; /* Auxiliary Registers,0xE0 */
u8 res14[10];
u8 aux_ad;