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List:       linux-tegra
Subject:    RE: [PATCH] ARM: Tegra: APB DMA: Enable clock and remove reset.
From:       Allen Martin <AMartin () nvidia ! com>
Date:       2010-11-29 22:32:32
Message-ID: 3C7A7ACA8617D24290826EC008B5CD0817D747FA1B () HQMAIL03 ! nvidia ! com
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> Right now, I think APB DMA works in Android because the bootloader turns
> this clock on, and the kernel doesn't turn it off, because there's no entry in
> tegra_list_clks[] for it.
> 
> For ChromeOS, U-Boot doesn't turn this clock on, hence APB DMA doesn't
> work.

There's a lot clocks in the same boat because they are missing from \
tegra_clk_init_table.  What we did in the ChromeOS kernel is enumerate the entire \
clock tree in tegra_clk_init_table for each board so there should be no dependency on \
bootloader clock configuration.   

I'll mail that patch out.

-Allen

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