Commit f479db44 authored Jul 19, 2012 by Andrew Lunn

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>

parent 84a1caf1

arch/arm/mach-kirkwood/common.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

		/*****************************************************************************