From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andreas Dannenberg Subject: Re: [PATCH 2/2] ARM: dts: dra7: Add ti,secure-ram node to ocmcram1 node Date: Wed, 11 May 2016 08:09:13 -0500 Message-ID: <20160511130913.GS20461@borg.dal.design.ti.com> References: <1462909782-14639-1-git-send-email-d-gerlach@ti.com> <1462909782-14639-3-git-send-email-d-gerlach@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Return-path: Content-Disposition: inline In-Reply-To: <1462909782-14639-3-git-send-email-d-gerlach-l0cyMroinI0@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Dave Gerlach Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Suman Anna , Rob Herring , Mark Rutland , Tony Lindgren List-Id: devicetree@vger.kernel.org On Tue, May 10, 2016 at 02:49:42PM -0500, Dave Gerlach wrote: > Secure variants of DRA7xx and AM57xx SoCs may need to reserve a region > of the SRAM for use by secure software. To account for this, add a child > node to the ocmcram1 node that will act as a placeholder at the start > of the SRAM for the reserved region of memory that may be required > by secure services. The node is added with size 0 so that by default > parts will have the full space available but the bootloader or board dts > file is able to resize the node as needed depending on how much reserved > space is needed, if any, so end users of the ocmcram1 region on HS parts > must be aware that a smaller amount of SRAM than expected may be available. > > Signed-off-by: Dave Gerlach Reviewed-by: Andreas Dannenberg -- Andreas Dannenberg Texas Instruments Inc -- 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 From mboxrd@z Thu Jan 1 00:00:00 1970 From: dannenberg@ti.com (Andreas Dannenberg) Date: Wed, 11 May 2016 08:09:13 -0500 Subject: [PATCH 2/2] ARM: dts: dra7: Add ti,secure-ram node to ocmcram1 node In-Reply-To: <1462909782-14639-3-git-send-email-d-gerlach@ti.com> References: <1462909782-14639-1-git-send-email-d-gerlach@ti.com> <1462909782-14639-3-git-send-email-d-gerlach@ti.com> Message-ID: <20160511130913.GS20461@borg.dal.design.ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, May 10, 2016 at 02:49:42PM -0500, Dave Gerlach wrote: > Secure variants of DRA7xx and AM57xx SoCs may need to reserve a region > of the SRAM for use by secure software. To account for this, add a child > node to the ocmcram1 node that will act as a placeholder at the start > of the SRAM for the reserved region of memory that may be required > by secure services. The node is added with size 0 so that by default > parts will have the full space available but the bootloader or board dts > file is able to resize the node as needed depending on how much reserved > space is needed, if any, so end users of the ocmcram1 region on HS parts > must be aware that a smaller amount of SRAM than expected may be available. > > Signed-off-by: Dave Gerlach Reviewed-by: Andreas Dannenberg -- Andreas Dannenberg Texas Instruments Inc