* Suman Anna <s-anna@xxxxxx> [151012 15:37]: > Hi Tony, > > On 10/12/2015 04:43 PM, Tony Lindgren wrote: > > * Suman Anna <s-anna@xxxxxx> [151002 16:27]: > >> The DSP_SYSTEM sub-module is a dedicated system control logic > >> module present within a DRA7 DSP processor sub-system. This > >> module is responsible for power management, clock generation > >> and connection to the device PRCM module. > >> > >> Add a syscon node for this module for the DSP1 processor > >> sub-system. This is added as a syscon node as it is a common > >> configuration module that can be used by the different IOMMU > >> instances and the corresponding remoteproc device. > >> > >> The node is added to the common dra7.dtsi file, as the DSP1 > >> processor sub-system is mostly common across all the variants > >> of the DRA7 SoC family. > >> > >> Signed-off-by: Suman Anna <s-anna@xxxxxx> > >> --- > >> arch/arm/boot/dts/dra7.dtsi | 5 +++++ > >> 1 file changed, 5 insertions(+) > >> > >> diff --git a/arch/arm/boot/dts/dra7.dtsi b/arch/arm/boot/dts/dra7.dtsi > >> index e289c706d27d..62055094e8d5 100644 > >> --- a/arch/arm/boot/dts/dra7.dtsi > >> +++ b/arch/arm/boot/dts/dra7.dtsi > >> @@ -292,6 +292,11 @@ > >> #thermal-sensor-cells = <1>; > >> }; > >> > >> + dsp1_system: dsp_system@40d00000 { > >> + compatible = "syscon"; > >> + reg = <0x40d00000 0x100>; > >> + }; > >> + > >> sdma: dma-controller@4a056000 { > >> compatible = "ti,omap4430-sdma"; > >> reg = <0x4a056000 0x1000>; > > > > Hmm so why would you want to set up a complete device as a syscon > > mapping rather than just doing ioremap on it? > > > > What drivers will be sharing access to these registers? > > Two different instances of the MMU for now, both get probed > independently. But there are other registers which a remoteproc driver > will mostly be interested in (like DSP_SYS_STAT for knowing the C66x > idle/active status). OK makes sense to me then. Thanks, Tony -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html