From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Gerlach Subject: [PATCH v2 2/3] Documentation: dt: add ti,am3353-wkup-m3 bindings Date: Wed, 4 Mar 2015 21:53:59 -0600 Message-ID: <1425527640-2690-3-git-send-email-d-gerlach@ti.com> References: <1425527640-2690-1-git-send-email-d-gerlach@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1425527640-2690-1-git-send-email-d-gerlach@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org Cc: Ohad Ben-Cohen , Suman Anna , Kevin Hilman , Tony Lindgren , Felipe Balbi , Dave Gerlach List-Id: devicetree@vger.kernel.org Add the device tree bindings document for ti,am3353-wkup-m3 which is used by the wkup_m3_rproc driver. Signed-off-by: Dave Gerlach --- .../bindings/remoteproc/wkup_m3_rproc.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt diff --git a/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt new file mode 100644 index 0000000..995af3d --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt @@ -0,0 +1,46 @@ +Wakeup M3 Remoteproc Driver +=========================== + +TI AMx3 family of devices use a Cortex M3 co-processor to help with various +low power tasks that cannot be controlled from the MPU. The CM3 requires +a firmware binary to accomplish this. The wkup_m3 remoteproc driver handles +the loading of the firmware and booting of the CM3. + +Wkup M3 Device Node: +==================== +A wkup_m3 device node is used to represent a wakeup M3 IP instance within +a SoC. + +Required properties: +-------------------- +- compatible: Should be: + "ti,am3353-wkup-m3" for AM33xx SoCs + "ti,am4372-wkup-m3" for AM43xx SoCs +- reg: Contains the wkup_m3 register address ranges for + umem and dmem, from the devices address space. + NOTE: Parent node must contains ranges specifying + mapping from bus address space to device + address space. +- ti,hwmods: Name of the hwmod associated with the mailbox +- ti,pm-firmware: Name of firmware file to load for remoteproc. + +Example: +-------- +/* AM33xx */ +soc { + compatible = "ti,omap-infra"; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x0 0x44d00000 0x4000>, + <0x80000 0x44d80000 0x2000>; + + ... + + wkup_m3: wkup_m3@44d00000 { + compatible = "ti,am3353-wkup-m3"; + reg = <0x0 0x4000 /* M3 UMEM */ + 0x80000 0x2000>; /* M3 DMEM */ + ti,hwmods = "wkup_m3"; + ti,pm-firmware = "am335x-pm-firmware.elf"; + }; +}; -- 2.3.0