From mboxrd@z Thu Jan 1 00:00:00 1970 From: wendy.liang@xilinx.com (Wendy Liang) Date: Wed, 15 Jul 2015 05:22:55 -0700 Subject: [RFC PATCH 2/2] Documentation: DTS: bindings: add ZynqMP RPU remoteproc In-Reply-To: <1436962975-13918-1-git-send-email-jliang@xilinx.com> References: <1436962975-13918-1-git-send-email-jliang@xilinx.com> Message-ID: <1436962975-13918-3-git-send-email-jliang@xilinx.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add documentation about the ZynqMP RPU remoteproc driver DTS bindings. Signed-off-by: Jason Wu Signed-off-by: Wendy Liang --- .../bindings/remoteproc/zynqmp_r5_remoteproc.txt | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/zynqmp_r5_remoteproc.txt diff --git a/Documentation/devicetree/bindings/remoteproc/zynqmp_r5_remoteproc.txt b/Documentation/devicetree/bindings/remoteproc/zynqmp_r5_remoteproc.txt new file mode 100644 index 0000000..94c1d00 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/zynqmp_r5_remoteproc.txt @@ -0,0 +1,49 @@ +Xilinx ARM Cortex A53-R5 remoteproc driver +========================================== + +ZynqMP family of devices use two Cortex R5 processors to help with various +low power / real time tasks. + +This driver requires specific ZynqMP hardware design. + +ZynqMP R5 RemoteProc Device Node: +================================= +A zynqmp_r5_remoteproc device node is used to represent a R5 IP instance +within ZynqMP SoC. + +Required properties: +-------------------- + - compatible : Should be "xlnx,zynqmp-r5-remoteproc-1.0" + - reg : Address and length of the register set for the device. It + contains in the same order as described reg-names + - reg-names: Contain the register set names. For direct control method, + ipi, rpu_base and apb_base must be provided + - interrupts : Interrupt mapping for remoteproc IPI + - interrupt-parent : Phandle for the interrupt controller + +Optional properties: +-------------------- + - firmware : Default firmware image name "rproc-rpu-fw" which can be + loaded by remoteproc framework. This value can be override + by "firmware" module parameter. + - bootmem : R5 boot device (valid string, ocm or tcm), default is ocm. + - core_conf : R5 core configuration (valid string - split0 or split1 or + lock-step), default is lock-step. + - method : RPU and IPI control method - direct, smc, hvc, default is smc. + - ipi_dest_mask : IPI channel destination mask. This is used to clear + ipi SR and let the rpu know the kernel has completed the work. + default mask is "0x100" + +Example: +-------- + zynqmp-r5-remoteproc at 0 { + compatible = "xlnx,zynqmp-r5-remoteproc"; + reg = <0x0 0x3ed00000 0x800000>, <0x0 0xff300000 0x100>, <0x0 0xff9a0000 0x400>, <0x0 0xff5e0000 0x400>; + reg-names = "shared", "ipi", "rpu_base", "apb_base"; + core_conf = "split0"; + method = "direct"; + bootmem = "ocm"; + firmware = "r5_image"; + interrupt-parent = <&gic>; + interrupts = <0 49 4>; + } ; -- 2.1.1