From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Andersson Subject: Re: [PATCH 7/7] Documentation: devicetree: Add Xilinx R5 rproc binding Date: Fri, 5 Oct 2018 22:50:16 -0700 Message-ID: <20181006055016.GB9450@builder> References: <1534403190-28523-1-git-send-email-jliang@xilinx.com> <1534403190-28523-8-git-send-email-jliang@xilinx.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1534403190-28523-8-git-send-email-jliang@xilinx.com> Sender: linux-kernel-owner@vger.kernel.org To: Wendy Liang Cc: ohad@wizery.com, michal.simek@xilinx.com, robh+dt@kernel.org, mark.rutland@arm.com, rajan.vaja@xilinx.com, jollys@xilinx.com, linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Wendy Liang List-Id: devicetree@vger.kernel.org On Thu 16 Aug 00:06 PDT 2018, Wendy Liang wrote: > Add device tree binding for Xilinx Cortex-r5 remoteproc. > > Signed-off-by: Wendy Liang > --- > .../remoteproc/xlnx,zynqmp-r5-remoteproc.txt | 81 ++++++++++++++++++++++ > 1 file changed, 81 insertions(+) > create mode 100644 Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5-remoteproc.txt > > diff --git a/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5-remoteproc.txt b/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5-remoteproc.txt > new file mode 100644 > index 0000000..3940019 > --- /dev/null > +++ b/Documentation/devicetree/bindings/remoteproc/xlnx,zynqmp-r5-remoteproc.txt > @@ -0,0 +1,81 @@ > +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" What is 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. > + "tcm_a" and "tcm_b" for TCM memories. > + If the user uses the remoteproc driver with the RPMsg kernel > + driver,"ipi" for the IPI register used to communicate with RPU > + is also required. > + Otherwise, if user only uses the remoteproc driver to boot RPU > + firmware, "ipi" is not required. > + - tcm-pnode-id: TCM resources power nodes IDs which are used to request TCM > + resources for the remoteproc driver to access. > + - rpu-pnode-id : RPU power node id which is used by the remoteproc driver > + to start RPU or shut it down. > + > +Optional properties: > +-------------------- > + - core_conf : R5 core configuration (valid string - split0 or split1 or > + lock-step), default is lock-step. > + - memory-region: memories regions for RPU executable and DMA memory. > + - interrupts : Interrupt mapping for remoteproc IPI. It is required if the > + user uses the remoteproc driver with the RPMsg kernel driver. > + - interrupt-parent : Phandle for the interrupt controller. It is required if > + the user uses the remoteproc driver with the RPMsg kernel > + kernel driver. > + > +Example: > +-------- > + reserved-memory { > + #address-cells = <2>; > + #size-cells = <2>; > + ranges; > + rproc_0_fw_reserved: rproc@3ed000000 { > + compatible = "rproc-prog-memory"; > + no-map; > + reg = <0x0 0x3ed00000 0x0 0x40000>; > + }; > + rproc_0_dma_reserved: rproc@3ed400000 { > + compatible = "shared-dma-pool"; > + no-map; > + reg = <0x0 0x3ed40000 0x0 0x80000>; > + }; > + }; > + > + firmware { > + zynqmp_firmware: zynqmp-firmware { > + compatible = "xlnx,zynqmp-firmware"; > + method = "smc"; > + }; > + }; > + > + zynqmp-r5-remoteproc@0 { remoteproc@ffe00000 { > + compatible = "xlnx,zynqmp-r5-remoteproc-1.0"; > + reg = <0x0 0xFFE00000 0x0 0x10000>, > + <0x0 0xFFE20000 0x0 0x10000>, > + <0x0 0xff340000 0x0 0x100>; Make all addresses lowercase, rather than mixing case. > + reg-names = "tcm_a", "tcm_b", "ipi"; > + dma-ranges; > + core_conf = "split0"; > + memory-region = <&rproc_0_fw_reserved>, > + <&rproc_0_dma_reserved>; > + tcm-pnode-id = <0xf>, <0x10>; > + rpu-pnode-id = <0x7>; > + interrupt-parent = <&gic>; > + interrupts = <0 29 4>; interrutps = ; > + } ; > -- > 2.7.4 > Regards, Bjorn