From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 588B92877CF for ; Wed, 25 Feb 2026 07:35:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772004906; cv=none; b=g4USiafJH/PA6rprB/DKVJtorZkcYrK9sMes9BWGkSO/To3SyU8T+E27hpcvb1SJOprJtlams2DKYgW6gUJ0fXKLkLblvFyNH/HPH+sZcor69RDrHBj+npBmFs1II4rc7T9FR0JWMTa9qhprosaB0WVmAWjhCeyeQPgwrfpqCGg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772004906; c=relaxed/simple; bh=+yBWQeNfgbn1YzlZgOOINbQ1VVXe/SU11SE1jUNt9sI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=W4AmOjzmPOyxszvXhIRW0dcYeV8SBiXQsVmkNdhYTtGHRDE+BCll0W9d5wHmkeDZcPJYTJALAnIxyw4Z4LKTqZGMS/OAslwSPJ3t982qQyxs+qcr/ZtC3JoaR/zgn+1IodVUMTTRuXcJAGv8o09czfxz3RfIplAkNxiWgqn0zcI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [223.64.68.227]) by gateway (Coremail) with SMTP id _____8BxVcEkpp5pMf0UAA--.17271S3; Wed, 25 Feb 2026 15:35:00 +0800 (CST) Received: from kernelserver (unknown [223.64.68.227]) by front1 (Coremail) with SMTP id qMiowJBx78Ifpp5prsNKAA--.10268S2; Wed, 25 Feb 2026 15:34:57 +0800 (CST) From: Binbin Zhou To: Binbin Zhou , Huacai Chen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andi Shyti , Wolfram Sang , Andy Shevchenko , linux-i2c@vger.kernel.org Cc: Huacai Chen , Xuerui Wang , loongarch@lists.linux.dev, devicetree@vger.kernel.org, Binbin Zhou Subject: [PATCH v3 0/2] i2c: Add Loongson-2K0300 I2C controller support Date: Wed, 25 Feb 2026 15:34:42 +0800 Message-ID: X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: loongarch@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:qMiowJBx78Ifpp5prsNKAA--.10268S2 X-CM-SenderInfo: p2kr3uplqex0o6or00hjvr0hdfq/1tbiAgEJCGmejyEBaAAAsy X-Coremail-Antispam: 1Uk129KBj93XoW7ZrWDWFWfCr17uF1DKF17Arc_yoW8WF43pa n8A3sxKF1jgr4I9rs3Jr4xuryYva1xJF43Wr42vw1v9a15A3yDZw4akF1YvFZrCryxZF42 qrWDGF1xCa4qvrbCm3ZEXasCq-sJn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUk0b4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r106r15M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_JFI_Gr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Jr0_Gr1l84ACjcxK6I8E87Iv67AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv6xkF7I0E14v2 6r4j6r4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYIkI8VC2zVCFFI0UMc 02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUGVWUXwAv7VC2z280aVAF wI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxAIw28IcxkI7V AKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCj r7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6x IIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x 0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjxUzZ2-UUUUU Hi all: This patch set describes the I2C controller integrated the Loongson-2K0300 chip. It has a significantly different design from the previous I2C controller(i2c-ls2x), such as support for master-slave transfer mode, and DMA transfers (implementation in progress), etc. Therefore, we try to name it i2c-ls2x-v2. Thanks. ====== V3: - Rebase on linux-i2c/i2c-next; Patch (2/2): - Reorder header file follow IWYU principle; - Better indentation and coding style; - Use generic macro definitions; - Amend *all* struct data types; - Correct unreasonable variable type definitions; - Refact loongson2_i2c_isr_error(); - of_property_read_u32()->device_property_read_u32(); - Remove meaningless blank lines and output. Link to V2: https://lore.kernel.org/all/cover.1769476820.git.zhoubinbin@loongson.cn/ V2: Patch (1/2): - Add Acked-by tag from Conor, thanks. Patch (2/2): - Reorder the definitions of read() and write(); - Adjust the calculation method for bus speed. Link to V1: https://lore.kernel.org/all/cover.1763018288.git.zhoubinbin@loongson.cn/ Binbin Zhou (2): dt-bindings: i2c: loongson,ls2x: Add ls2k0300-i2c compatible i2c: ls2x-v2: Add driver for Loongson-2K0300 I2C controller .../bindings/i2c/loongson,ls2x-i2c.yaml | 4 + MAINTAINERS | 1 + drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-ls2x-v2.c | 510 ++++++++++++++++++ 5 files changed, 526 insertions(+) create mode 100644 drivers/i2c/busses/i2c-ls2x-v2.c base-commit: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f -- 2.52.0