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clk: gate: add clk_always_on for debug

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use:
bootargs = "earlycon=uart8250,mmio32,0xfe660000 console=ttyFIQ0 clk_gate.always_on=y";

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: Iff38f71b31bf1de4b5e18bdaefd695d60cd2e124
This commit is contained in:
Elaine Zhang
2021-11-05 18:03:17 +08:00
committed by Finley Xiao
parent a8b8bfcdf5
commit 5aef9fb666
1 changed files with 7 additions and 0 deletions
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7
drivers/clk/clk-gate.c
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@ -16,6 +16,10 @@
#include <linux/err.h>
#include <linux/string.h>
static bool clk_always_on;
module_param_named(always_on, clk_always_on, bool, 0644);
MODULE_PARM_DESC(always_on, "Always keep clks on except for system suspend.");
/**
* DOC: basic gatable clock which can gate and ungate it's ouput
*
@ -46,6 +50,9 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
unsigned long uninitialized_var(flags);
u32 reg;
if (clk_always_on && !enable)
return;
set ^= enable;
if (gate->lock)