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". Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
