From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from twmbx01.aspeedtech.com (mail.aspeedtech.com [211.20.114.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 68C3C2F745C; Tue, 6 Oct 2026 07:20:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.20.114.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791271249; cv=none; b=jYYW6E5ojb03YzyPJgkv+9P3uE3LUF3OXihTiHoA6x+F1cjkb+WuoNVG956HQ5La8E5GeVLPHvw87fQV59KkZLr5oX2OUh6/ktonl08zs8fBecTNURqfHm0IFA+fGKT6vaV4QxQwUbeW4FGarlMOkc7oTFuTGFlN6WRSc7M79Qg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791271249; c=relaxed/simple; bh=+lnCdixXupc617AR7sm1LsquNOwNIOFaWpL4HQYU6fI=; h=From:Subject:Date:Message-ID:MIME-Version:Content-Type:To:CC; b=XfMTj6SZE1+RZ8JaVhSMZQCU3xgwCG4niIunowMYRBfdIAvZO91clxe1JfCsX+crjnKXJJAKdrHc+FRFPBW29eXtyHb8Qe3EYSEQI0Gt3ZAq+/bV5t51t3lfEl3CyE4Ek+Z2SIYo49aWYQYY87RdbdSfTOpvlLtUm9LcnByqI+Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com; spf=pass smtp.mailfrom=aspeedtech.com; arc=none smtp.client-ip=211.20.114.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=aspeedtech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=aspeedtech.com Received: from TWMBX01.aspeed.com (192.168.0.62) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Tue, 6 Oct 2026 15:20:43 +0800 Received: from [127.0.1.1] (192.168.10.13) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Tue, 6 Oct 2026 15:20:43 +0800 From: Jacky Chou Subject: [PATCH net-next v2 0/6] net: ftgmac100: Add AST2700 support Date: Tue, 6 Oct 2026 15:20:38 +0800 Message-ID: <20261006-support_ast2700-v2-0-36de51fb8066@aspeedtech.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAEahxGoC/2WNwQ7CIBAFf6XZsxi6rbT15H+YxiAsloNAAJuap v8u4epxMnnzdkgULSW4NjtEWm2y3hXAUwNqke5FzOrCgBwFF9ix9AnBx/yQKePAOROjebai17K /KCirEMnYrRbv4CgzR1uGuZjFpuzjt16tbfW1OuHwV11bxtlkeGdw0qhGvMkUiHQmtZyVf8N8H McPvtLdNb0AAAA= X-Change-ID: 20260623-support_ast2700-68fb164da45c To: Andrew Lunn , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Po-Yu Chuang , Eric Dumazet , "Heiner Kallweit" , Russell King , "Eric Dumazet" CC: , , , Jacky Chou , Krzysztof Kozlowski X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1791271243; l=4079; i=jacky_chou@aspeedtech.com; s=20251031; h=from:subject:message-id; bh=+lnCdixXupc617AR7sm1LsquNOwNIOFaWpL4HQYU6fI=; b=9gLCMxztTYobf4v3eDQ9VgZSyJzxrJ2c8obdCak0F0h8qNp8N9KK1rVubVEvf4c9ponKyDaIO HDWiAgOVevsCCg7vw7rQjlNXXLAm7dneC+1aqyQ9fEPlfbEwMcKMLCb X-Developer-Key: i=jacky_chou@aspeedtech.com; a=ed25519; pk=8XBx7KFM1drEsfCXTH9QC2lbMlGU4XwJTA6Jt9Mabdo= Add the pieces needed for the FTGMAC100 driver to run on Aspeed AST2700 systems. AST2700 keeps using the FTGMAC100 MAC IP, but the enablement is not limited to a new compatible string. The SoC can boot with the MAC on ARM64, needs the Aspeed-specific RMII mode bit programmed when a port is wired for RMII, and requires the driver to use the upper DMA address fields in the ring base registers and packet descriptors. Those fields expose a 35-bit DMA address range on AST2700, so the driver must request a mask that matches the address bits the hardware can encode. The series first documents and wires up the aspeed,ast2700-mac compatible. It then treats AST2700 as an Aspeed MAC in the driver, enables the RMII mode programming, writes the AST2700 high descriptor-ring base registers, carries the RX/TX descriptor high address bits, rebuilds full DMA addresses before unmapping buffers, and requests a 35-bit DMA mask. The high ring base registers are only touched for AST2700 so older Aspeed device tree register windows remain unchanged. With that in place, the FTGMAC100 Kconfig entry can be made available on ARM64 while keeping the existing Aspeed MDIO dependency for AST2600 and newer ARCH_ASPEED systems. RGMII delay is configured at the bootloader stage, the same way it is handled for AST2600, not by this driver. Aspeed's SDK bootloader configures both AST2600 and AST2700 boards with the RGMII delay disabled and advertises "phy-mode = rgmii-id" to match, mirroring the OpenBMC bootloader change that stopped inserting delays on AST2600 so its device trees could use the correct "rgmii-id" setting. On AST2700, every on-chip MAC is likewise configured by the bootloader with RGMII delay disabled and "rgmii-id" phy-mode. Because the delay is already resolved before Linux boots, the ftgmac100 driver does not need to program any RGMII delay for either AST2600 or AST2700. This series has been validated on AST2700 EVB and AST2600 EVB. Patch layout: - patch 1 updates the binding for the AST2700 compatible, RMII RCLK gate, and reset support. - patch 2 adds the AST2700 match data and OF compatible. - patch 3 programs the AST2700 RMII enable bit. - patch 4 makes "phy-mode" a required device tree property for AST2700 and fails probe if it is missing. - patch 5 adds AST2700 upper DMA address handling for rings and descriptors. - patch 6 enables the Faraday/FTGMAC100 Kconfig options on ARM64 and selects MDIO_ASPEED for ARCH_ASPEED. Signed-off-by: Jacky Chou --- Changes in v2: - Make "phy-mode" a required device tree property for AST2700 and fail probe if it is missing, instead of silently defaulting to RGMII. - Document in the cover letter how RGMII delay is configured at the bootloader stage for AST2600 and AST2700. - Simplify the MDIO_ASPEED Kconfig select to ARCH_ASPEED only, dropping the redundant MACH_ASPEED_G6 condition, and update its help text to mention AST2700. - Pick up Reviewed-by from Krzysztof Kozlowski on the dt-bindings patch. - Link to v1: https://lore.kernel.org/r/20260927-support_ast2700-v1-0-9f03f29d2c82@aspeedtech.com --- Jacky Chou (6): dt-bindings: net: ftgmac100: Add AST2700 compatible net: ftgmac100: Add AST2700 compatible support net: ftgmac100: Enable AST2700 RMII support net: ftgmac100: Require phy-mode for AST2700 net: ftgmac100: Add AST2700 upper DMA address support net: ftgmac100: Allow building on ARM64 .../devicetree/bindings/net/faraday,ftgmac100.yaml | 4 +- drivers/net/ethernet/faraday/Kconfig | 7 +- drivers/net/ethernet/faraday/ftgmac100.c | 93 +++++++++++++++++++--- drivers/net/ethernet/faraday/ftgmac100.h | 7 ++ drivers/net/mdio/Kconfig | 16 ++-- 5 files changed, 104 insertions(+), 23 deletions(-) --- base-commit: a5e7d8e446af9803e37a3b6a4d416fb41178348f change-id: 20260623-support_ast2700-68fb164da45c Best regards, -- Jacky Chou