From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shawn Guo Subject: Re: [PATCH v3 1/2] fsl: Add binding for RCPM Date: Thu, 24 Sep 2015 05:29:17 -0700 Message-ID: <20150924122917.GQ3529@tiger> References: <1443083354-37369-1-git-send-email-dongsheng.wang@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1443083354-37369-1-git-send-email-dongsheng.wang-KZfg59tc24xl57MIdRCFDg@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Dongsheng Wang Cc: scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Chenhui Zhao , alison.wang-KZfg59tc24xl57MIdRCFDg@public.gmane.org, linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Tang Yuantian , robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, jason.jin-KZfg59tc24xl57MIdRCFDg@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org On Thu, Sep 24, 2015 at 04:29:13PM +0800, Dongsheng Wang wrote: > From: Wang Dongsheng > > RCPM is the Run Control and Power Management module performs all > device-level tasks associated with device run control and power > management. > > Add this for freescale powerpc platform and layerscape platform. > > Signed-off-by: Chenhui Zhao > Signed-off-by: Tang Yuantian > Signed-off-by: Wang Dongsheng > --- > *v3* > - Add "fsl,#rcpm-wakeup-cells" for rcpm node. The number of cells > correspond rcpm-wakeup property. > - Modify rcpm-wakeup property description. > > *v2* > - Remove P4080 example. > - Modify rcpm-wakeup property description. > > diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt > new file mode 100644 > index 0000000..52110ec > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt > @@ -0,0 +1,63 @@ > +* Run Control and Power Management > +------------------------------------------- > +The RCPM performs all device-level tasks associated with device run control > +and power management. > + > +Required properites: > + - reg : Offset and length of the register set of RCPM block. > + - fsl,#rcpm-wakeup-cells : The number of cells in rcpm-wakeup property. > + - compatible : Sould contain a chip-specific RCPM block compatible string > + and (if applicable) may contain a chassis-version RCPM compatible > + string. Chip-specific strings are of the form "fsl,-rcpm", > + such as: > + * "fsl,p2041-rcpm" > + * "fsl,p3041-rcpm" > + * "fsl,p4080-rcpm" > + * "fsl,p5020-rcpm" > + * "fsl,p5040-rcpm" > + * "fsl,t4240-rcpm" > + * "fsl,b4420-rcpm" > + * "fsl,b4860-rcpm" > + > + Chassis-version strings are of the form "fsl,qoriq-rcpm-", > + such as: > + * "fsl,qoriq-rcpm-1.0": for chassis 1.0 rcpm > + * "fsl,qoriq-rcpm-2.0": for chassis 2.0 rcpm > + * "fsl,qoriq-rcpm-2.1": for chassis 2.1 rcpm > + > +All references to "1.0" and "2.0" refer to the QorIQ chassis version to > +which the chip complies. > +Chassis Version Example Chips > +--------------- ------------------------------- > +1.0 p4080, p5020, p5040, p2041, p3041 > +2.0 t4240, b4860, b4420 > +2.1 t1040, ls1021 > + > +Example: > +The RCPM node for T4240: > + rcpm: global-utilities@e2000 { > + compatible = "fsl,t4240-rcpm", "fsl,qoriq-rcpm-2.0"; > + reg = <0xe2000 0x1000>; > + fsl,#rcpm-wakeup-cells = <2>; > + }; > + > +* Freescale RCPM Wakeup Source Device Tree Bindings > +------------------------------------------- > +Required rcpm-wakeup property should be added to a device node if the device > +can be used as a wakeup source. > + > + - rcpm-wakeup: The value of the property consists of cells, the number of Shouldn't this vendor specific property be prefixed with 'fsl,' as well? > + cells defined in "fsl,#rcpm-wakeup-cells". The first cell is a pointer > + to the rcpm node, the second cell is the bit mask that should be set > + in IPPDEXPCR0, and the third cell is for IPPDEXPCR1, and so on. I guess that IPPDEXPCR0 and IPPDEXPCR1 need some documentation too, or a pointer to hardware documents containing more detailed info about them. Shawn > + > +Example: > + lpuart0: serial@2950000 { > + compatible = "fsl,ls1021a-lpuart"; > + reg = <0x0 0x2950000 0x0 0x1000>; > + interrupts = ; > + clocks = <&sysclk>; > + clock-names = "ipg"; > + rcpm-wakeup = <&rcpm 0x0 0x40000000>; > + status = "disabled"; > + }; > -- > 2.1.0.27.g96db324 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html