[PATCH v5 4/6] arm64: Add DTS support for FSL's LS2085A SoC

bhupesh.sharma at freescale.com bhupesh.sharma at freescale.com
Tue Nov 25 21:11:21 PST 2014


Hi Marc,

[big snip..]

> 
> > +	timer {
> > +		compatible = "arm,armv8-timer";
> > + interrupts = <1 13 0x1>, /* Physical Secure PPI, edge triggered */
> > + <1 14 0x1>, /* Physical Non-Secure PPI, edge triggered */
> > +			     <1 11 0x1>, /* Virtual PPI, edge triggered */
> > +			     <1 10 0x1>; /* Hypervisor PPI, edge triggered */
> 
> Are you sure about this "edge triggered"? The A57 TRM suggests otherwise:
> 
> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0488g/way1
> 382454511590.html
> 

Actually I did read the TRM but was confused by the "edge triggered" conventions
used by Juno ARMv8 DTSI (see [1]). I see other ARMv8 DTSI also using the "edge triggered"
notion, so I was wondering if I am missing some A57 errata or these DTSI also need fixing.

[1] juno.dts https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/tree/arch/arm64/boot/dts/arm/juno.dts?id=refs/tags/next-20141125#n99

Regards,
Bhupesh





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