From: Peter Korsgaard <jacmet@sunsite.dk>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 7/9] am33xx: support ti814x mmc reference clock
Date: Mon, 04 Mar 2013 15:04:29 +0100 [thread overview]
Message-ID: <87r4jvb6s2.fsf@dell.be.48ers.dk> (raw)
In-Reply-To: <20130304135731.GD6209@beef> (Matt Porter's message of "Mon, 4 Mar 2013 08:57:31 -0500")
>>>>> "Matt" == Matt Porter <mporter@ti.com> writes:
Hi,
>> Did you figure out why it was working for you with 96 MHz ref?
Matt> Unfortunately not at a root cause level. Unless I'm missing
Matt> something I would have expected the calculations from the
Matt> supplied 96 MHz ref clock to result in 2x the clock the SD card
Matt> can handle due to the incorrect divider. However, with the LA
Matt> attached, I found that a 2-3 MHz SDCLK was being generated after
Matt> the capability probe occurs. Odd and incorrect, but
Matt> functional. After switching to 192MHz I was able to sample a
Matt> nominal 25MHz SDCLK as expected on a regular SD card advertising
Matt> that as its capability. I don't like it but I'm going to mark
Matt> this down as "something undocumented" as I only have PG1.0
Matt> silicon but can't find an errata sheet for that version right
Matt> now.
Ok, thanks for the info.
--
Bye, Peter Korsgaard
next prev parent reply other threads:[~2013-03-04 14:04 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-01 1:29 [U-Boot] [PATCH v2 0/9] Add TI814x EVM Support Matt Porter
2013-03-01 1:29 ` [U-Boot] [PATCH v2 1/9] am33xx: convert defines from am33xx-specific to generic names Matt Porter
2013-03-03 22:29 ` Peter Korsgaard
2013-03-01 1:29 ` [U-Boot] [PATCH v2 2/9] am33xx: refactor emif4/ddr to support multiple EMIF instances Matt Porter
2013-03-03 22:30 ` Peter Korsgaard
2013-03-01 1:29 ` [U-Boot] [PATCH v2 3/9] am33xx: refactor am33xx clocks and add ti814x support Matt Porter
2013-03-02 15:37 ` [U-Boot] [PATCH v3 " Matt Porter
2013-03-01 1:29 ` [U-Boot] [PATCH v2 4/9] am33xx: refactor am33xx mux support " Matt Porter
2013-03-01 1:29 ` [U-Boot] [PATCH v2 5/9] am33xx: add ti814x specific register definitions Matt Porter
2013-03-01 1:29 ` [U-Boot] [PATCH v2 6/9] am33xx: add dmm support to emif4 library Matt Porter
2013-03-01 1:29 ` [U-Boot] [PATCH v2 7/9] am33xx: support ti814x mmc reference clock Matt Porter
2013-03-01 21:14 ` Tom Rini
2013-03-03 22:34 ` Peter Korsgaard
[not found] ` <80ea5e8e05d24152a4572f154a7124f0@DFLE72.ent.ti.com>
2013-03-04 13:57 ` Matt Porter
2013-03-04 14:04 ` Peter Korsgaard [this message]
2013-03-01 1:29 ` [U-Boot] [PATCH v2 8/9] ns16550: enable quirks for ti814x Matt Porter
2013-03-03 22:34 ` Peter Korsgaard
2013-03-01 1:29 ` [U-Boot] [PATCH v2 9/9] ti814x_evm: add ti814x evm board support Matt Porter
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