On Mon, May 27, 2019 at 03:03:15PM +0800, [email protected] wrote: > From: Anson Huang <[email protected]> > > i.MX system controller watchdog depends on SCU driver to support > interrupt function, so it needs to be subnode of SCU node in DT, > binding doc should be moved to fsl,scu.txt as well. > > Signed-off-by: Anson Huang <[email protected]> > Reviewed-by: Rob Herring <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]> > --- > No changes, just rebase the patch to top of linux-next. > --- > .../devicetree/bindings/arm/freescale/fsl,scu.txt | 15 ++++++++++++++ > .../bindings/watchdog/fsl-imx-sc-wdt.txt | 24 > ---------------------- > 2 files changed, 15 insertions(+), 24 deletions(-) > delete mode 100644 > Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt > > diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt > b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt > index f378922..a575e42 100644 > --- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt > +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt > @@ -145,6 +145,16 @@ Optional Child nodes: > - Data cells of ocotp: > Detailed bindings are described in bindings/nvmem/nvmem.txt > > +Watchdog bindings based on SCU Message Protocol > +------------------------------------------------------------ > + > +Required properties: > +- compatible: should be: > + "fsl,imx8qxp-sc-wdt" > + followed by "fsl,imx-sc-wdt"; > +Optional properties: > +- timeout-sec: contains the watchdog timeout in seconds. > + > Example (imx8qxp): > ------------- > aliases { > @@ -207,6 +217,11 @@ firmware { > rtc: rtc { > compatible = "fsl,imx8qxp-sc-rtc"; > }; > + > + watchdog { > + compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; > + timeout-sec = <60>; > + }; > }; > }; > > diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt > b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt > deleted file mode 100644 > index 02b87e9..0000000 > --- a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt > +++ /dev/null > @@ -1,24 +0,0 @@ > -* Freescale i.MX System Controller Watchdog > - > -i.MX system controller watchdog is for i.MX SoCs with system controller > inside, > -the watchdog is managed by system controller, users can ONLY communicate with > -system controller from secure mode for watchdog operations, so Linux i.MX > system > -controller watchdog driver will call ARM SMC API and trap into > ARM-Trusted-Firmware > -for watchdog operations, ARM-Trusted-Firmware is running at secure EL3 mode > and > -it will request system controller to execute the watchdog operation passed > from > -Linux kernel. > - > -Required properties: > -- compatible: Should be : > - "fsl,imx8qxp-sc-wdt" > - followed by "fsl,imx-sc-wdt"; > - > -Optional properties: > -- timeout-sec : Contains the watchdog timeout in seconds. > - > -Examples: > - > -watchdog { > - compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; > - timeout-sec = <60>; > -};
