Fri, 5 Sep 2014 10:30:20 +0200 от Linus Walleij <[email protected]>: > On Wed, Sep 3, 2014 at 7:05 PM, Grygorii Strashko > <[email protected]> wrote: > > > On Keystone SOCs, ARM host can send interrupts to DSP cores using the > > DSP GPIO controller IP. Each DSP GPIO controller provides 28 IRQ signals for > > each DSP core. This is one of the component used by the IPC mechanism used > > on Keystone SOCs. > > > > Keystone 2 DSP GPIO controller has specific features: > > - each GPIO can be configured only as output pin; > > - setting GPIO value to 1 causes IRQ generation on target DSP core; > > - reading pin value returns 0 - if IRQ was handled or 1 - IRQ is still > > pending. > > > > This patch updates gpio-syscon driver to be reused by Keystone 2 SoCs, > > because the Keystone 2 DSP GPIO controller is controlled through Syscon > > devices and, as requested by Linus Walleij, such kind of GPIO controllers > > should be integrated with drivers/gpio/gpio-syscon.c driver. > > > > Signed-off-by: Grygorii Strashko <[email protected]> > > --- > > .../devicetree/bindings/gpio/gpio-dsp-keystone.txt | 39 > > ++++++++++++++++++++++ > > Rob, can you look at these bindings? > > I suspect they may fall under your category of "not a real device, but > leaking Linux implementation internals".
This is the reason why I suggested to move the offsets in the driver. ---
