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ARM: dts: keystone: drop msmcsram clock node

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At late init all unused clocks are disabled. So clocks that were not
get before will be gated. In Keysone 2 SoC we have at least one
necessary clock that is not used by any driver - "msmcsram". This
clock is necessary, because it supplies the Multicore Shared Memory
Controller (MSMC). MSMC is the coherency interconnect and all the
coherent masters are connected to it including devices which are not
under Linux OS control. MSMC clock should not be touched even in low
power states.

So drop the clock node, otherwise 'clk_ignore_unused' parameter will
disable the clock leading to system stall.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
This commit is contained in:
Ivan Khoronzhuk 2014-02-18 11:40:34 -05:00 committed by Santosh Shilimkar
parent 513cfad363
commit 5a2abe192d
1 changed files with 0 additions and 10 deletions
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10
arch/arm/boot/dts/keystone-clocks.dtsi
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@ -327,16 +327,6 @@ clksr: clksr {
domain-id = <6>;
};
clkmsmcsram: clkmsmcsram {
#clock-cells = <0>;
compatible = "ti,keystone,psc-clock";
clocks = <&chipclk1>;
clock-output-names = "msmcsram";
reg = <0x02350038 0xb00>, <0x0235001c 0x400>;
reg-names = "control", "domain";
domain-id = <7>;
};
clkgem0: clkgem0 {
#clock-cells = <0>;
compatible = "ti,keystone,psc-clock";