From mboxrd@z Thu Jan 1 00:00:00 1970 From: York Sun Date: Fri, 22 Mar 2013 10:29:11 -0700 Subject: [U-Boot] [PATCH 13/31] powerpc/qixis: add clock measurement registers In-Reply-To: <1363973369-26110-1-git-send-email-yorksun@freescale.com> References: <1363973369-26110-1-git-send-email-yorksun@freescale.com> Message-ID: <1363973369-26110-13-git-send-email-yorksun@freescale.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Ed Swarthout 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 Signed-off-by: York Sun --- board/freescale/common/qixis.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/board/freescale/common/qixis.h b/board/freescale/common/qixis.h index 8d914d5..2cf8738 100644 --- a/board/freescale/common/qixis.h +++ b/board/freescale/common/qixis.h @@ -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; -- 1.7.9.5