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AJvYcCX2xj+H9yfN2ieo2ot3f6icN8IRUVLZjqdL4E7s5fVl+dGwhtXi91DA2K4FZ0gvgO8dyHaUe469zkHt@vger.kernel.org X-Gm-Message-State: AOJu0Yx5QSaYHHrpXEPEo5V8HWk+MVpbY3VcyZVEf5h5FtcfV3hBGPfy /TgugktcjyKDJqWfOpoX4qRr/clE/TwXwWhqPqAcx+NC7R3hhTO1jVnzsZafMq89J1TLNV2uTeC 0gPmYfk0EYkJc4Ng+a4QmSoup1UquzzhrLm/B+A== X-Gm-Gg: ASbGncvTIjXSP1ocFtx8UILfQMU9WHJCUEOJIndqcfTn4YpQOqRq3G64jUyfmPEGfsS Vfqab0+4GZjHDYf4mDOOcwjUsQOGcJIeIu0OnWhlk4MWtHqlVi6SJzG+lBNgmdFfghXCTBAFX4J n1UstJWGlhVCf6wpDM3N/CkAqEsE0r X-Google-Smtp-Source: AGHT+IEK78m51sGJDd3X7obouAmtice1DYZhDC7vdVZTdA3vPC4baSC0McAYMZqXZ2JdRz2CuZ0fh5G5y4aENoDxPdM= X-Received: by 2002:a17:907:971a:b0:ab9:63bf:8105 with SMTP id a640c23a62f3a-ab963bf8270mr490444566b.1.1739469468776; Thu, 13 Feb 2025 09:57:48 -0800 (PST) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250213171435.1c2ce376@bootlin.com> <821d4c74-09b0-4c1b-b8ef-f8c08d0f6b5b@lunn.ch> In-Reply-To: <821d4c74-09b0-4c1b-b8ef-f8c08d0f6b5b@lunn.ch> From: Phil Elwell Date: Thu, 13 Feb 2025 17:57:37 +0000 X-Gm-Features: AWEUYZnQGb_LTFgRMGvR2NkevZWJdZdjShSWV1aYMFwhkUzlH95FjIU8_Kkz2O0 Message-ID: Subject: Re: [PATCH v6 00/10] Add support for RaspberryPi RP1 PCI device using a DT overlay To: Andrew Lunn Cc: Herve Codina , Andrea della Porta , Arnd Bergmann , "maintainer:BROADCOM BCM7XXX ARM ARCHITECTURE" , bhelgaas@google.com, brgl@bgdev.pl, Catalin Marinas , Conor Dooley , derek.kiernan@amd.com, devicetree@vger.kernel.org, dragan.cvetic@amd.com, Florian Fainelli , Greg Kroah-Hartman , krzk+dt@kernel.org, kw@linux.com, Linus Walleij , linux-arm-kernel , linux-clk@vger.kernel.org, linux-gpio@vger.kernel.org, LKML , "open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS" , "moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE" , lpieralisi@kernel.org, luca.ceresoli@bootlin.com, manivannan.sadhasivam@linaro.org, masahiroy@kernel.org, Michael Turquette , Rob Herring , saravanak@google.com, Stephen Boyd , thomas.petazzoni@bootlin.com, Stefan Wahren , Will Deacon , Dave Stevenson Content-Type: text/plain; charset="UTF-8" On Thu, 13 Feb 2025 at 17:45, Andrew Lunn wrote: > > > > Or do you mean a custom board, which has a CPU, RP1 and the button and > > > fan are directly on this custom board? You then want a board DTS which > > > includes all these pieces? > > > > That depends on whether you count the Raspberry Pi 5 as a custom board. > > So you mean the Pi 5 board would itself make use of the resources the > RP1 device has? They are not simply connected to headers for plugin > boards, but used by the main board? Hence you want to describe them in > the board .DTS file. That's correct. But even for plug-in devices, those which are on non-discoverable buses need overlays to declare them, which causes a problem when the overlay application happens before the kernel is started. Phil