* Tony Lindgren <tony@xxxxxxxxxxx> [151012 15:57]: > * 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. And applying these into omap-for-v4.4/dt. 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