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Fri, 9 Apr 2021 04:51:51 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.5.0-alpha0-273-g8500d2492d-fm-20210323.002-g8500d249 Mime-Version: 1.0 Message-Id: In-Reply-To: References: <20210319062752.145730-1-andrew@aj.id.au> <20210319062752.145730-16-andrew@aj.id.au> Date: Fri, 09 Apr 2021 18:21:29 +0930 From: "Andrew Jeffery" To: linux-arm-kernel@lists.infradead.org Subject: =?UTF-8?Q?Re:_[PATCH_v2_16/21]_ipmi:_kcs=5Fbmc:_Add_a_"raw"_character_de?= =?UTF-8?Q?vice_interface?= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210409_015158_852886_DADD4BB4 X-CRM114-Status: GOOD ( 12.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Arnd, On Fri, 9 Apr 2021, at 17:25, Arnd Bergmann wrote: > On Fri, Mar 19, 2021 at 7:31 AM Andrew Jeffery wrote: > > > > The existing IPMI chardev encodes IPMI behaviours as the name suggests. > > However, KCS devices are useful beyond IPMI (or keyboards), as they > > provide a means to generate IRQs and exchange arbitrary data between a > > BMC and its host system. > > I only noticed the series after Joel asked about the DT changes on the arm > side. One question though: > > How does this related to the drivers/input/serio/ framework that also talks > to the keyboard controller for things that are not keyboards? Are these > separate communication channels on adjacent I/O ports, or does there > need to be some arbitration? Good questions! I'll look into serio and get back to you. Andrew _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel