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From: John Watts To: Ahmad Fatoum Cc: Sascha Hauer , barebox@lists.infradead.org Message-ID: References: <20230125080406.GW24755@pengutronix.de> <20230125081923.GY24755@pengutronix.de> <072ab8ce-d92f-8841-a44e-621a3ba345a4@pengutronix.de> <77f25018-39ab-ec53-56a5-21bfdeb484d7@pengutronix.de> <13bed4ae-5db5-7432-f610-a065bdebb524@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <13bed4ae-5db5-7432-f610-a065bdebb524@pengutronix.de> X-Migadu-Flow: FLOW_OUT X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230125_065028_787634_5454CC46 X-CRM114-Status: GOOD ( 16.15 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.0 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 4/5] ARM: novena: Read Ethernet MAC address from EEPROM X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) On Wed, Jan 25, 2023 at 03:33:18PM +0100, Ahmad Fatoum wrote: > On 25.01.23 15:28, John Watts wrote: > > On Wed, Jan 25, 2023 at 03:16:05PM +0100, Ahmad Fatoum wrote: > >> We could add the binding to the barebox AT24/AT25 driver. We'll need > >> to make sure we don't fail the probe in the error path as not to > >> break existing users. Fortunately, with deep probe, we will > >> have no -EPROBE_DEFER that would complicate this. > > > > I'm really not sure if specifying the regulator (that should always be on) for > > every possible node is a good idea. I'd need to add -supply properties to: > > > > - USB > > - Sata > > - HDMI > > - SD cards > > - Ethernet > > - PCIe > > - FPGA > > - I2C > > - UART > > What voltage does your UART require that you don't already have when > your SoC is powered up? anyways, I still see utility in observing > the vcc-supply upstream bindings for EEPROMs. These are used for pull-up/pull-down resistors. > Add an of_devices_ensure_probed_by_property("regulator-boot-enabled") or > something to the start of your machine's board driver then. Hmm. Probing for regulator-always-on and regular-boot-on seems to fix my issue. John.