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[180.177.138.120]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cd6a85c6fbesm656992a12.11.2026.10.21.04.00.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2026 04:00:06 -0700 (PDT) From: Hung-Chun Tseng To: Yixun Lan Cc: E Shattow , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] riscv: dts: spacemit: mark K1 board boot devices bootph-pre-ram Date: Wed, 21 Oct 2026 18:59:59 +0800 Message-ID: <20261021110001.2905669-1-alan.tseng.cs@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261021083425-GKA125937@kernel.org> References: <20261017180141.3477743-3-alan.tseng.cs@gmail.com> <13d6926f-f085-4214-8051-7bf7b5d92b67@freeshell.de> <20261019141752.2077207-1-alan.tseng.cs@gmail.com> <20261021083425-GKA125937@kernel.org> X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Yixun, Yixun Lan wrote: > but for bootph-pre-ram, isn't it about the DT nodes which needed before DDR > initialization in SPL stage, and should have nothing to do with BootROM? Thanks for checking with the vendor. I agree, the schema defines it as "the phase that sets up SDRAM". I also need to correct what I said earlier: the EEPROM is not only used to tell the boards apart. It also holds the board's DRAM configuration (number of chip selects, data rate and DDR type), which has to be read before DRAM can be trained [1]. So in v3 I'd like to keep the i2c2 and EEPROM tags, and also tag the EEPROM on the OrangePi RV2 and R2S, which I missed in v2. E, does that address your concern? [1] board/spacemit/k1/spl.c in U-Boot, ddr_early_init() -> read_ddr_info() Thanks, Hung-Chun From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CB6C0606A319 for ; Wed, 21 Oct 2026 11:00:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=vALnznPf; dkim=fail reason="signature verification failed" (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=HCYqR9Fc DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=50vxAyAjvXs9uPSImvSe63viRylV6r8YyU+rSSD9nnw=; b=vALnznPfkHmVpF cpBtWsV7Vw39KTy5NmPq/ha5JW7r5OBC9K0gRz9YbVVTCVL0j8RvxHxlq2QLMsCCpE5/cCAh0gctI R+Nn7zttMooLzD/l1myXcN6JaXbw+d2RoEZkNvjzdUROQas4Vh7rAuJFOKAD7XF1xvsAfTOyHKWHo 8ZEqc644xdfUb0fQNMGz6CYK32NkomS0UidnouuWIY+JXgEIgbAmbstaPsBtLRB7kWE4qh7HbUBgw FRTYq5yRa9hof6rsWj6AdcdxxbzL3zvyQjDrY68sBnvPhPFSlzkSNzCWatrFbwHMiSjR3tURoLK0H 2s6qslprHWqqXwx3ueVQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xJU3H-0000000Bgeb-0uIK; Wed, 21 Oct 2026 11:00:11 +0000 Received: from mail-pg1-x52a.google.com ([2607:f8b0:4864:20::52a]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xJU3F-0000000Bge1-0EY8 for linux-riscv@lists.infradead.org; Wed, 21 Oct 2026 11:00:10 +0000 Received: by mail-pg1-x52a.google.com with SMTP id 41be03b00d2f7-cc4dbcf2b85so209006a12.3 for ; Wed, 21 Oct 2026 04:00:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1792580408; x=1793185208; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=An+ETgbADntwtFKiPu43Mts6liLduZLS5iQIAQ+a5W8=; b=HCYqR9FcZ5dWUhhz7eVYZ0XVI9Z4RP6Y1cB9wf9GrCVodoMsdkOHwTQiQXlbPcn/oy MucqsGMIkOjPftFyYIuHabEdiAkQv1pCj3301Xn3f67rJDjqD2/OKoqu+SrT/+5nsx/a pG2NpUW5Ee0YWz+lTAGmgdkQlQWMkO9ZST2ygrbaNI92OyY3aREs0W99wZk2/FhqzD8z /NPTklWMlpcc7kiCuwk6Wk0NFE8v7v17DillWDWc40vlQ0i+Sxk0rt2RC5UmnX/QH77p skuWIQc8vpHWlFTZtL0W1EZ5VBPIWPe2HLdO+V/Ooke2r7VYmGZYs+5okPdcMDMRJav3 S0IQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792580408; x=1793185208; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=An+ETgbADntwtFKiPu43Mts6liLduZLS5iQIAQ+a5W8=; b=kaIZ+RzsS/33W1OPKlu9R1p3I2cl3ZJXQWMov+KjSfo8Qsfb0iHH2+wTXB6Ku6lkLW A89if38jyg6fPAb6oUdUF43Yl+Qb8BemjtZpjZXS0z/BWmdtrBIdt2V4EGlm/oCcU4Hp rda69anT1IbCldmGBWGq5PTR5WgcFe5TPHNIE5tFDfm42KHI7Za3gRBzEEfau3KkSpS1 sTlQok7q1vlBS+AKCNu4sH4FnRuypWHyA/5biDLUVAbw20uhXFbGWeN78p0z/ldx7k9s UeNCAGuFDWi9OR0Ev797P+A5RPgt5jkibsVAaGdkeeOL4raRtI42b9NvlkSAOoZSV9i0 fZBw== X-Forwarded-Encrypted: i=1; AKwUvByQFUG76hrds1Sbs4gz7y4htLuIwLP0yk3xFt3rNBqoF9cdsDV7nXDSdUz8hQY279YVFAaI9X3wWRR5dQ==@lists.infradead.org X-Gm-Message-State: AFq9FYJSKnqwF/dhY2xy3he293VqxL+uhulS+O5cqYR8WZNl9BBtcBPJ X29FkmZzK5YpU0k0SNRc7EEOB3aRrF0+2oI7JyKPWdXb9wrBYm6VlWNA X-Gm-Gg: AYBFou1KRIi3yJbBbALnaYtySakyOx2UxuD15bBoFXi5tqzC8Xso2iu/AERU9eZc5qC GsPDZKxzOHRQ0JOQNoToYfatCHshUX3ULFiZK0to2dJ5xLF7BFeTc/E83qjVHldCTPvyMz6EJ2v e+cODspBLgyMFjJoUQRskNARgaULZK5WWm3Or0+kx5FS4P3Hdgn2JW9XdRim1OQMkAOpZsHEVEJ GSqfRtuMLQ0DWOExtHlTkdKrfV3DRJPnMgjxvKc3NUcByy/eZ/Cz+1qHfeg+l+y+5Oo+NprchG2 +2QHmThLUS2X80idrDv47+M65JbaBKEp+bXxZ/RnDHNsp5/u6QJua+PbsxuiJdu7SlKFDk7Ywe1 zYTFTSQbw/izgAAMOj9fWnN033wTmwmOiJi+6wRyrE6JRvghtJBWku5DFg3pe3mN53vEaNp1xY9 sz/WsBIpbAC0Xo4WzPT4YjM/lpU5ILWIzS90J5hWb4yVh5qS7xewteXK/T7Q0Ja1iohSYisKGu5 DzuV0/CtqbMXNEq6mcow3wF6vAGoP5jzQzmCWdPnFcZwiwWXSvbplt0+GOX/RU9Z6m2jVzeKo2B obIsJW7K903FVqvzlOe0snG8+1qtJqX+94DB91TsHJxbmANRVUE8gIN6SKCHqEoyjfngdMlek/g kPBApSwBQcWkcPpJfueSzGjGzWrngfLUFDic= X-Received: by 2002:a05:6300:210e:b0:3d3:ae1f:d7f8 with SMTP id adf61e73a8af0-3e287df515emr1543449637.24.1792580407543; Wed, 21 Oct 2026 04:00:07 -0700 (PDT) Received: from alanhc-14700.tailb22ec2.ts.net (180-177-138-120.dynamic.kbronet.com.tw. [180.177.138.120]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cd6a85c6fbesm656992a12.11.2026.10.21.04.00.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2026 04:00:06 -0700 (PDT) From: Hung-Chun Tseng To: Yixun Lan Cc: E Shattow , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/2] riscv: dts: spacemit: mark K1 board boot devices bootph-pre-ram Date: Wed, 21 Oct 2026 18:59:59 +0800 Message-ID: <20261021110001.2905669-1-alan.tseng.cs@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261021083425-GKA125937@kernel.org> References: <20261017180141.3477743-3-alan.tseng.cs@gmail.com> <13d6926f-f085-4214-8051-7bf7b5d92b67@freeshell.de> <20261019141752.2077207-1-alan.tseng.cs@gmail.com> <20261021083425-GKA125937@kernel.org> X-Archived-By: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261021_040009_099860_723C9208 X-CRM114-Status: UNSURE ( 9.18 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.1 (--) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hi Yixun, Yixun Lan wrote: > but for bootph-pre-ram, isn't it about the DT nodes which needed before DDR > initialization in SPL stage, and should have nothing to do with BootROM? Thanks for checking with the vendor. I agree, the schema defines it as "the phase that sets up SDRAM". I also need to correct what I said earlier: the EEPROM is not only used to tell the boards apart. It also holds the board's DRAM configuration (number of chip selects, data rate and DDR type), which has to be read before DRAM can be trained [1]. So in v3 I'd like to keep the i2c2 and EEPROM tags, and also tag the EEPROM on the OrangePi RV2 and R2S, which I missed in v2. E, does that address your concern? [1] board/spacemit/k1/spl.c in U-Boot, ddr_early_init() -> read_ddr_info() Thanks, Hung-Chun _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv