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Thu, 04 Jun 2020 09:40:16 -0700 (PDT) Subject: Re: [PATCH 2/3] ARM: dts: bcm2711: Update SPI nodes compatible strings To: Lukas Wunner , Florian Fainelli References: <20200604034655.15930-1-f.fainelli@gmail.com> <20200604034655.15930-3-f.fainelli@gmail.com> <20200604042038.jzolu6k7q3d6bsvq@wunner.de> From: Florian Fainelli Message-ID: <15c3995e-87de-0f2b-3424-5dd698b181d3@gmail.com> Date: Thu, 4 Jun 2020 09:40:12 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Firefox/68.0 Thunderbird/68.8.1 MIME-Version: 1.0 In-Reply-To: <20200604042038.jzolu6k7q3d6bsvq@wunner.de> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200604_094019_774670_37B2C8E4 X-CRM114-Status: GOOD ( 13.49 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , Scott Branden , Ray Jui , linux-kernel@vger.kernel.org, Rob Herring , "open list:SPI SUBSYSTEM" , Mark Brown , "maintainer:BROADCOM BCM281XX/BCM11XXX/BCM216XX ARM ARCHITE..." , "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" , Martin Sperl , Nicolas Saenz Julienne Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 6/3/2020 9:20 PM, Lukas Wunner wrote: > On Wed, Jun 03, 2020 at 08:46:54PM -0700, Florian Fainelli wrote: >> The BCM2711 SoC features 5 SPI controllers which all share the same >> interrupt line, the SPI driver needs to support interrupt sharing, >> therefore use the chip specific compatible string to help with that. > > You're saying above that the 5 controllers all share the interrupt > but below you're only changing the compatible string of 4 controllers. > > So I assume spi0 still has its own interrupt and only the additional > 4 controllers present on the BCM2711/BCM7211 share their interrupt? Correct, there are 5 instances, but only the 4 that were added for 2711 actually share the interrupt line, I will correct that in the next patch version. -- Florian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel