On Wed, Aug 27, 2025 at 02:49:54PM +0000, Shenwei Wang wrote: > > > > -----Original Message----- > > From: Rob Herring <r...@kernel.org> > > Sent: Tuesday, August 26, 2025 3:09 PM > > To: Shenwei Wang <shenwei.w...@nxp.com> > > Cc: Bjorn Andersson <anders...@kernel.org>; Mathieu Poirier > > <mathieu.poir...@linaro.org>; Krzysztof Kozlowski <krzk...@kernel.org>; > > Conor > > Dooley <conor...@kernel.org>; Shawn Guo <shawn...@kernel.org>; Sascha > > Hauer <s.ha...@pengutronix.de>; Linus Walleij <linus.wall...@linaro.org>; > > Bartosz Golaszewski <b...@bgdev.pl>; Pengutronix Kernel Team > > <ker...@pengutronix.de>; Fabio Estevam <feste...@gmail.com>; Peng Fan > > <peng....@nxp.com>; linux-remotep...@vger.kernel.org; > > devicet...@vger.kernel.org; i...@lists.linux.dev; linux-arm- > > ker...@lists.infradead.org; linux-kernel@vger.kernel.org; dl-linux-imx > > <linux- > > i...@nxp.com> > > Subject: [EXT] Re: [PATCH 1/4] dt-bindings: remoteproc: imx_rproc: Add > > "rpmsg" > > subnode support > > > Each subnode within "rpmsg" represents an individual RPMSG channel. > > > The name of each subnode corresponds to the channel name as defined by > > > the remote processor. > > > > > > All remote devices associated with a given channel are defined as > > > child nodes under the corresponding channel node. > > > > How is each channel addressed? Are they really grouped by type first (i2c, > > gpio, > > etc.) then an address within the group? Or is there some flat channel > > numbering? > > If the latter, then the addresses in the DT shoulc match the channel number. > > > > Yes, the channels are grouped by type and identified by unique channel names > assigned > by the remote processor. > > The RPMSG bus dynamically assigns addresses to each channel at runtime. > Because these > addresses are not static, they cannot be pre-defined in the dts.
But you did define addresses. How do you know which channel 'gpio@1' corresponds to if RPMSG dynamically assigns addresses? Rob
