On Mon, Feb 19, 2018 at 12:21 AM, Tero Kristo <t-kristo@xxxxxx> wrote: > On 19/02/18 05:10, Rob Herring wrote: >> >> On Tue, Feb 13, 2018 at 07:15:29PM +0200, Tero Kristo wrote: >>> >>> Certain revisions of the TI EMIF IP contain ECC support in them. Reflect >>> this in the DT binding. Also, add interrupts property as a required >>> property for the emif controller, as all revisions of the emif IP contain >>> interrupt support; this might remain unused by the kernel driver though. >>> >>> Signed-off-by: Tero Kristo <t-kristo@xxxxxx> >>> --- >>> .../devicetree/bindings/memory-controllers/ti/emif.txt | 13 >>> ++++++++++++- >>> 1 file changed, 12 insertions(+), 1 deletion(-) >>> >>> diff --git >>> a/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt >>> b/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt >>> index 621b41c..87022a9 100644 >>> --- a/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt >>> +++ b/Documentation/devicetree/bindings/memory-controllers/ti/emif.txt >>> @@ -3,7 +3,9 @@ >>> EMIF - External Memory Interface - is an SDRAM controller used in >>> TI SoCs. EMIF supports, based on the IP revision, one or more of >>> DDR2/DDR3/LPDDR2 protocols. This binding describes a given instance >>> -of the EMIF IP and memory parts attached to it. >>> +of the EMIF IP and memory parts attached to it. Certain revisions >>> +of the EMIF controller also contain optional ECC support, which >>> +corrects one bit errors and detects two bit errors. >>> Required properties: >>> - compatible : Should be of the form "ti,emif-<ip-rev>" where <ip-rev> >>> @@ -11,6 +13,8 @@ Required properties: >>> compatible should be one of the following: >>> "ti,emif-am3352" >>> "ti,emif-am4372" >>> + "ti,emif-dra7xx" >>> + "ti,emif-keystone" >>> - phy-type : <u32> indicating the DDR phy type. Following are the >>> allowed values >>> @@ -22,6 +26,7 @@ Required properties: >>> - ti,hwmods : For TI hwmods processing and omap device creation >>> the value shall be "emif<n>" where <n> is the number of the EMIF >>> instance with base 1. >>> +- interrupts : interrupt used by the controller >> >> >> Only for the new compatibles? > > > I added this as required property for all, as all EMIF versions actually do > have IRQ. Should this still be marked as optional as only certain versions > of the driver use it? On am3/am4 only it is optional right now, and not used > by the existing driver. On omap4 and omap5 it is required also (list of > compatibles for the binding seem to be missing these actually; ti,emif-4d > and ti,emif-4d5.) > > Either way, I can mark this as optional property for am3/am4 if you want (I > actually asked this already before but did not get clear response), what is > your final take on this? Okay. I'm fine if it is required. You're going to update all the dts files, right? Reviewed-by: Rob Herring <robh@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
