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 CAB552459F3; Wed, 24 Sep 2025 06:30:03 +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=1758695405; cv=none; b=PLxGjihcA2964v44YChUYdfViGLmZSuG0G2dk3ftl5gXMLCos0Yb63sromyCWJsnNdwgQ9fWzsA6H8l+Zbkj1OSeWDLDFQ7wt/++U5E+8DQQ6YsRwc6YHBoHEeJGW5AwywScqJK7fa8fmSJi9zy20h1eKN6JXZmvRSgEjOYufWE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758695405; c=relaxed/simple; bh=A8V04nPGggppkrusDyTpPflznnAPzzPNBzIvJQIzjJ0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=kvOHy3jlW0qp6Qfkb7NkhLMAy0ktPrtiF3UwT5zZkvAqS3Z8TqJtOGaaXHBVNN3kKw/s+yixJ+lDQBaONumthCYhjg0vi0ZbyeLJ5P52vfGfKPbXDFit3rI80OPtH/Qmg6JPBIyOsCaQvrjSkKZrAvHYrgwEaOmivkUje4oPs1Q= 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 [223.64.68.198]) by gateway (Coremail) with SMTP id _____8DxvdLij9NonvYNAA--.29625S3; Wed, 24 Sep 2025 14:29:54 +0800 (CST) Received: from localhost.localdomain (unknown [223.64.68.198]) by front1 (Coremail) with SMTP id qMiowJAxVOTbj9NogKyqAA--.21497S2; Wed, 24 Sep 2025 14:29:48 +0800 (CST) From: Binbin Zhou To: Binbin Zhou , Huacai Chen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Greg Kroah-Hartman , Jiri Slaby , Haowei Zheng Cc: Huacai Chen , Xuerui Wang , loongarch@lists.linux.dev, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, Binbin Zhou Subject: [PATCH v5 0/3] uart: Introduce uart driver for the Loongson family Date: Wed, 24 Sep 2025 14:29:35 +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:qMiowJAxVOTbj9NogKyqAA--.21497S2 X-CM-SenderInfo: p2kr3uplqex0o6or00hjvr0hdfq/1tbiAQEPCGjTiCgAoAAAs8 X-Coremail-Antispam: 1Uk129KBj93XoW7KF1xtFy3tw1ruF1UZFWrJFc_yoW8uw47pF sIya90kFsY9F1xAwn3AryruF4rZr95JF9FgFsrKwn5GFZYv3WUXr4ftFn0yF1rZrZ5tr42 qFy8CrWUKayUZ3cCm3ZEXasCq-sJn29KB7ZKAUJUUUUr529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUBYb4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_Gr0_Xr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Gr0_Cr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6xkF7I0E14v2 6rxl6s0DM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE52x082IY62kv0487Mc804VCY07AIYI kI8VC2zVCFFI0UMc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2IY67AKxVWUtVWr XwAv7VC2z280aVAFwI0_Gr0_Cr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI4 8JMxkF7I0En4kS14v26r126r1DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j 6r4UMxCIbckI1I0E14v26r1Y6r17MI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwV AFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv2 0xvE14v26r1I6r4UMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4 v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AK xVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IU0epB3UUUUU== Hi all: For various reasons, I will be taking over from Haowei and continuing to push forward with this patch set. Thanks to Haowei for his efforts so far. This patchset introduce a generic UART framework driver for Loongson family. It can be found on Loongson3 series cpus, Loongson-2K series cpus and Loongson LS7A bridge chips. Thanks. ------ V5: Patch-1: - Since the Loongson UART is NS8250A-compatible, simply add ls2k* compatible to 8250.yaml. Sorry for the DTS{i} check error that appeared in the V3 patchset. I've fixed this issue. Thanks to Krzysztof. Link to V4: https://lore.kernel.org/all/cover.1757318368.git.zhoubinbin@loongson.cn/ V4: Patch-1: - Rename binding name from loongson,uart.yaml to loongson,ls2k0500-uart.yaml; - Drop ls7a compatible; - According to the manual, ls3a and ls2k uart are the same, so merge their compatible. Patch-2: - Format code; - Add the LOONGSON_UART_DLF macro definition to avoid magic numbers; - Simplify the code, merge flags and quirks, and remove struct loongson_uart_config; - Use DEFINE_SIMPLE_DEV_PM_OPS; - Drop loongson,ls7a-uart compatible. Patch-3: - Add ls2k* compatible string, and ns16550a as the fallback compatible. Link to V3: https://lore.kernel.org/all/20240826024705.55474-1-zhenghaowei@loongson.cn/ Binbin Zhou (3): dt-bindings: serial: 8250: Add Loongson uart compatible serial: 8250: Add Loongson uart driver support LoongArch: dts: Add uart new compatible string .../devicetree/bindings/serial/8250.yaml | 14 ++ arch/loongarch/boot/dts/loongson-2k0500.dtsi | 2 +- arch/loongarch/boot/dts/loongson-2k1000.dtsi | 2 +- arch/loongarch/boot/dts/loongson-2k2000.dtsi | 2 +- drivers/tty/serial/8250/8250_loongson.c | 202 ++++++++++++++++++ drivers/tty/serial/8250/8250_port.c | 8 + drivers/tty/serial/8250/Kconfig | 10 + drivers/tty/serial/8250/Makefile | 1 + include/uapi/linux/serial_core.h | 1 + 9 files changed, 239 insertions(+), 3 deletions(-) create mode 100644 drivers/tty/serial/8250/8250_loongson.c base-commit: f4abab350840d58d69814c6993736f03ac27df83 -- 2.47.3