ARM: imx: add shared gate clock support

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It's quite common on i.MX that one gate bit controls the gating of
multiple clocks, i.e. this is a shared gate.  The patch adds the
function imx_clk_gate2_shared() for such case.  The clocks controlled
by the same gate bits should call this function with a pointer to a
single share count variable, so that the gate bits will only be
operated on the first enabling and the last disabling of these shared
gate clocks.

Thanks to Gerhard Sittig <gsi@denx.de> for this idea.

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

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This commit is contained in:

Shawn Guo 2014-04-19 10:58:22 +08:00

parent 94b5c02882

commit f9f28cdf21

2 changed files with 23 additions and 3 deletions

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13

arch/arm/mach-imx/clk-gate2.c

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13

arch/arm/mach-imx/clk.h

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