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From: tbultel at free.fr <tbultel@free.fr>
To: u-boot@lists.denx.de
Subject: [U-Boot] Running mx6qsabrelite at 1Gz with Freescale kernel rel_imx_3.0.35_4.1.0
Date: Tue, 18 Mar 2014 12:28:30 +0100	[thread overview]
Message-ID: <1395142110.53282ddeee751@imp.free.fr> (raw)



Hi,

I am working on a board (AMOS820 from Via) based on the mx6qsabrelite.

The BSP provided by the manufacturer is quite old.
I managed to port it from Freescale uboot-imx rel_imx_3.0.35_4.1.0 to u-boot
mainline, and basically the latest issue I have is the cpu frequency.

The kernel I use is the rel_imx_3.0.35_4.1.0 as well (same tag name)

With the old u-boot, it runs at 1Ghz because the BSP explicitly has a call to

clk_config(CONFIG_REF_CLK_FREQ, 1000, CPU_CLK);

With the new u-boot, it runs at default freq which is 800Mhz (at least, what I
guess from the Bogomips because no other log says it)
I have attempted to pass "arm_freq=1000" to the boot args but that does not
change anything.

My concern is that clk_config does not seem to be available anymore, there is
get_mcu_main_clk but no set routine.

I wonder if it is intentional, I could write a set routine but I wonder if it
could be accepted as a patch.
What it your advice about it ?

Regards
Thierry

             reply	other threads:[~2014-03-18 11:28 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-18 11:28 tbultel at free.fr [this message]
2014-03-18 12:34 ` [U-Boot] Running mx6qsabrelite at 1Gz with Freescale kernel rel_imx_3.0.35_4.1.0 Stefano Babic
2014-03-21 18:47   ` Thierry Bultel
2014-03-21 22:50     ` Eric Nelson
2014-03-22  1:33       ` Marek Vasut
2014-03-22 15:13         ` Eric Nelson
2014-03-22 15:17         ` [U-Boot] [PATCH] ARM: mx6: Disable PCIe on SABRE Lite/Nitrogen6x Eric Nelson
2014-03-22 18:26           ` Marek Vasut
2014-03-22 20:50             ` Thierry Bultel
2014-03-22 21:49               ` Eric Nelson
2014-03-23  0:15                 ` Marek Vasut
2014-03-23  0:11               ` Marek Vasut
2014-03-23 16:50               ` Stefano Babic
2014-03-23 16:48             ` Stefano Babic
2014-04-01  8:17           ` Stefano Babic

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