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 A3D0B4F5E0; Tue, 27 Jan 2026 02:48:20 +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=1769482104; cv=none; b=k0iAUhH07DGDK9nIFk/UuyK7BH8xMnbBSwum6aqRpEmILF9lvWbVCKLFJtfe2wSpIHTLQoMAw1NvctM61S4qLraNUIZTHcj21WByQQlA/Y4hgOFiiYtNFgPQTr0TCeJuRn4fhULNtUpQOQ9aUM84W6xjk87hlhZD9xyzxyY/xDM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769482104; c=relaxed/simple; bh=qs50nfhR6TdkPTvLK+9MuwCc57o3mV26cBlcEaAA3ro=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=tdaqwyYD5uP3blFrUWnW6LvXfyTqrg2Zl/saPYGI29tiJrNDvuzDRdjpkPMFMiznOogSBuw9wVy/ufo98VEoHbKaXt1k6qEFDlgMb2Fjus0OFSAn72j3eCNE8NvLLB9ZhS6fayCQ7mq5OpkD3++GSPHCB267To/NRlz1QALTxvk= 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 [223.64.69.42]) by gateway (Coremail) with SMTP id _____8CxLMNsJ3hpZPsMAA--.42513S3; Tue, 27 Jan 2026 10:48:12 +0800 (CST) Received: from localhost.localdomain (unknown [223.64.69.42]) by front1 (Coremail) with SMTP id qMiowJCxWeBnJ3hpPJEzAA--.36583S2; Tue, 27 Jan 2026 10:48:09 +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 v2 0/2] i2c: Add Loongson-2K0300 I2C controller support Date: Tue, 27 Jan 2026 10:47:55 +0800 Message-ID: X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:qMiowJCxWeBnJ3hpPJEzAA--.36583S2 X-CM-SenderInfo: p2kr3uplqex0o6or00hjvr0hdfq/1tbiAQEACGl3AjkTtgAAsI X-Coremail-Antispam: 1Uk129KBj9xXoW7XryDXrWxWr4xWF43Cw43XFc_yoWkArcEk3 4xWasrAw1kCF93Ca4UJF4fZry3CayUta48A3Zrtw4ak3y2gw1YgF97CrZxZ3WxXF47GFn8 Ww1UZF1IvwnxGosvyTuYvTs0mTUanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUj1kv1TuYvT s0mT0YCTnIWjqI5I8CrVACY4xI64kE6c02F40Ex7xfYxn0WfASr-VFAUDa7-sFnT9fnUUI cSsGvfJTRUUUbI8YFVCjjxCrM7AC8VAFwI0_Jr0_Gr1l1xkIjI8I6I8E6xAIw20EY4v20x vaj40_Wr0E3s1l1IIY67AEw4v_Jrv_JF1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxS w2x7M28EF7xvwVC0I7IYx2IY67AKxVW8JVW5JwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxV W8JVWxJwA2z4x0Y4vEx4A2jsIE14v26F4j6r4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_ Gr1j6F4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYIkI8VC2zVCFFI0UMc 02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUXVWUAwAv7VC2z280aVAF wI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JMxkF7I0En4kS14 v26r126r1DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8C rVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8Zw CIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x02 67AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr 0_Gr1lIxAIcVC2z280aVCY1x0267AKxVWUJVW8JbIYCTnIWIevJa73UjIFyTuYvjxU2BT5 DUUUU 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. ====== 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 | 15 + MAINTAINERS | 1 + drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-ls2x-v2.c | 545 ++++++++++++++++++ 5 files changed, 572 insertions(+) create mode 100644 drivers/i2c/busses/i2c-ls2x-v2.c base-commit: 880977fdc7f67923d1904ee23ca75fa1e375ea46 -- 2.47.3