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ARM: Kirkwood: Ensure runit clock always ticks. 

Marvell engineers tell us:

	It seems that many units use the RUNIT clock.
	SPI, UART, NAND, TWSI, ...
	So it's not possible to clock gate it.

Currently the SPI, NAND and TWSI driver will clk_prepaure_enable()
this clk, but since we have no idea what ... is, and turning this clk
off results in a hard lock, unconditionally enable runit.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Simon Baatz <gmbnomis@gmail.com>
This commit is contained in:
Andrew Lunn 2012-07-19 08:58:08 +02:00
parent 84a1caf145
commit f479db44d2
1 changed files with 5 additions and 0 deletions
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5
arch/arm/mach-kirkwood/common.c
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@ -241,6 +241,11 @@ void __init kirkwood_clk_init(void)
orion_clkdev_add("0", "pcie", pex0);
orion_clkdev_add("1", "pcie", pex1);
orion_clkdev_add(NULL, "kirkwood-i2s", audio);
/* Marvell says runit is used by SPI, UART, NAND, TWSI, ...,
* so should never be gated.
*/
clk_prepare_enable(runit);
}
/*****************************************************************************