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| author | Andrew Lunn <andrew@lunn.ch> | 2012-07-19 10:58:08 +0400 |
|---|---|---|
| committer | Andrew Lunn <andrew@lunn.ch> | 2012-07-25 18:50:45 +0400 |
| commit | f479db44d2e3d4a969897e1f5e331e5ed4ac4968 (patch) | |
| tree | 7e9bc90a5f5ef7686dd9dd5ba44209e41d3b1e2b /arch/arm | |
| parent | 84a1caf1453c3d44050bd22db958af4a7f99315c (diff) | |
| download | linux-f479db44d2e3d4a969897e1f5e331e5ed4ac4968.tar.xz | |
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-kirkwood/common.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c index f261cd242643..3de2d6df58e1 100644 --- a/arch/arm/mach-kirkwood/common.c +++ b/arch/arm/mach-kirkwood/common.c @@ -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); } /***************************************************************************** |