From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f181.google.com (mail-il1-f181.google.com [209.85.166.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B21DB30E0C8 for ; Wed, 17 Sep 2025 22:07:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758146851; cv=none; b=ju23BH3xyxEMfIqn6bA3ImwtDRxWf4MD0/Y8uB5fdD2OlSXhi7sBSCMw04Y31tNG1b60oOYMzmLgpcw0MyieCl3xgMkqfJdN9D7mpGiiE6rXwHBwbu65RYGfaPJpDrNyEcMg7TG15+3f7hqfxvwIPxdYvrUUlv+DQU9ref6gE+U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758146851; c=relaxed/simple; bh=nzUaN55jEAng4Zv9fz+h0GiC5YvS42PpGZXeLpWjU3Q=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=DzJXZ/RpHeBFC4yKu+pzEN6r+X+M/uggdIxT6LN5H4yU0N26VJg/LbqqSfwJAxRH9ynQaMe7VV6gNlquQ6HeE0D77r9hCiwfgC04ANhj7G/HePPpgZgPshsimmAsimA2gCDB46TB5/gMp2FUjeb+MQ+QfNo4SFXPasLh8gpdW0Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com; spf=pass smtp.mailfrom=riscstar.com; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b=ZiA0q6DC; arc=none smtp.client-ip=209.85.166.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=riscstar.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b="ZiA0q6DC" Received: by mail-il1-f181.google.com with SMTP id e9e14a558f8ab-423394b393eso1653685ab.1 for ; Wed, 17 Sep 2025 15:07:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1758146848; x=1758751648; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=Jp8RbtGYlwCTIrM7MVPtV3vKCoFBge4Bz36KG46LLsA=; b=ZiA0q6DCcc7rXxWISXql5cxvSFl2WHw6OHSJ/Fh6KY1nITEW3+SOVpK6Gu7sCG18Fn pm+uZe1UzfY9YViIVuV6BAXh5p3VU/v6tO8CCu8Gt9ULK6/AE9xCiMKfW8cjX6WbuQrF gCVtaVz6FoZHlh/BRW4SCnxykDnvnkuYE6XhBjgLdVLNtDzCQuosX27g8uuuddgEXMjg prXzVxl/JmhD9aycGrnedsxacc/wGbX1DAR0VcrzRBxiEzaRH7RkGxhDG1GPzMG5yKI3 lapI4BB5dJq58WbWCOND3tK1kw1xgqy9oYogFJShm0j23tLqlflR8gvZU1HPpyMidpSu sCzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758146848; x=1758751648; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Jp8RbtGYlwCTIrM7MVPtV3vKCoFBge4Bz36KG46LLsA=; b=hvicvqXV0O2LdfcB4sJrRhxyh0TMlXSae0icfHF4V1zmDnwR3cfRBVg2M/rmuoyaWF h8e6dUGTAvCyuYR+MrZAgOIqRLIonb0NpEsk2ktDDnEj9VrtE/0HVmITx1F0CGbYSR// yi+kfmQwvyuVwcL5Z7gMI6S/fhJLS+ukvB0OUjKYzPR3ptZYsybLTAePHdMJT/aIWCqs +wosOVlM0h77gBR1kllC38UzjQVF46QSsoOiQHVZW6FPb/6SJ+LV++e5JiW9Mee8nYaX Vabr1Mch64Kle9qpK1Ctyq4DXNIseQiy6ER9WGFCavRuyREPL1rIpQaakF1EPG6+6NoO yStg== X-Gm-Message-State: AOJu0YzzDHheMMW6nIc7TLecRlkRbI8yf2wxJ4wG4LGb0SJfwWjeEx6N VIO1k3mLM5fhhcvm9ILNEHR5mnOfjqWcrf7pv2FKV4aLhQRN00ZSsxuoEWq367EZwVc= X-Gm-Gg: ASbGncsQkeuNIVwIGXjqBHai4sc7dgDDeHvzRmqexJNMWjZEunQDhd5APJBvUUz5NqG CGI1bsQbRAblz9M9qUAzXm/P5Yuy4j6HwMq0UYrkchwfHs4NSFF94VrLB4Qi38YJn1/xsBZv1dn nubTmQUSRWUDV/rAkWfQUcC8ilKGms6DmHlKg03zvNDgrliR/SZJl3fFY3shqPLbVBH+zwvOcDz mB3aHq0UvrsMQdjR3XQEI4dVE3fpYTe/MPfanpBX59hIAcC3qKRGjCZ0pgyPubZkb7v5lnSyfdZ KfB76TZfI3Lvy2eFJbEX/oIkeMAF7xWdO3+RskqBespMsrWo7AybZrC41qX91D8qQnx4pCOLCtN iQA/WIw6YUt+1Ps4x2Cs3CWqgv6ctqpPvX3rodh2Guzjm5f+7a4kFVd/EjylCp6WW2Oh76IQaqq kWmatfQuP9/g72hV+nLyg= X-Google-Smtp-Source: AGHT+IHKI3XQBkBxfHfdLx0gpZ16Wz3vuAMqg+Tko1i9TXarf8MFb1q82xDwIkDYWvOkJteES4wzxA== X-Received: by 2002:a92:c26b:0:b0:414:117d:3186 with SMTP id e9e14a558f8ab-424449d9c55mr15071065ab.13.1758146848530; Wed, 17 Sep 2025 15:07:28 -0700 (PDT) Received: from zippy.localdomain (c-75-72-117-212.hsd1.mn.comcast.net. [75.72.117.212]) by smtp.gmail.com with ESMTPSA id e9e14a558f8ab-4244afa9f6fsm2346335ab.22.2025.09.17.15.07.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 17 Sep 2025 15:07:28 -0700 (PDT) From: Alex Elder To: broonie@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, dlan@gentoo.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, p.zabel@pengutronix.de, spacemit@lists.linux.dev, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/3] spi: support the SpacemiT K1 SPI controller Date: Wed, 17 Sep 2025 17:07:20 -0500 Message-ID: <20250917220724.288127-1-elder@riscstar.com> X-Mailer: git-send-email 2.48.1 Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series adds support for the SPI controller found in the SpacemiT K1 SoC. The driver currently supports only master mode. It has two 32-entry FIFOs and supports PIO and DMA for transfers. -Alex Alex Elder (3): dt-bindings: spi: add SpacemiT K1 SPI support spi: spacemit: introduce SpacemiT K1 SPI controller driver riscv: dts: spacemit: define a SPI controller node .../bindings/spi/spacemit,k1-spi.yaml | 94 ++ .../boot/dts/spacemit/k1-bananapi-f3.dts | 6 + arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi | 20 + arch/riscv/boot/dts/spacemit/k1.dtsi | 19 + drivers/spi/Kconfig | 8 + drivers/spi/Makefile | 1 + drivers/spi/spi-spacemit-k1.c | 985 ++++++++++++++++++ 7 files changed, 1133 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml create mode 100644 drivers/spi/spi-spacemit-k1.c base-commit: 590b221ed4256fd6c34d3dea77aa5bd6e741bbc1 -- 2.48.1