From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from TWMBX01.aspeed.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 841223C30; Wed, 2 Jul 2025 01:20:04 +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=1751419208; cv=none; b=oTD+WVsQetdgluG/gr0sTmCIuGDwbsbefyXjQcGDgjLyAk2W4L416nKwqS7VAyHrPB8cqiWttbx39MIlDlPDAer1EpcYESjhf6plEBjpRm6ju42ORUM0WCXsX9JZOIcyqOspDKlF4vLz6v649ipgOnmoBegaUa3y8xktL+qBcT8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751419208; c=relaxed/simple; bh=Hs3i768dwPsoUxNaz+oZSekXJNx0gsy8vC4jq+H4f0U=; h=From:To:Subject:Date:Message-ID:MIME-Version:Content-Type; b=su3hE7L1pVJ89mLlo5NXCF1fOIR20NJC2qN9VshAEI5V2pTXu8D2NADDeNlaKftA4RFoorZrgpLd1971BQl8253Bv46MfC5iHOEm1pfcZQ8z0MBY0pGIRGqauLsEXaKzj7vCmsoszQn27TTZ0LxapOmN7NYVCinev+jjv8WH1Mw= 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; Wed, 2 Jul 2025 09:19:56 +0800 Received: from mail.aspeedtech.com (192.168.10.13) by TWMBX01.aspeed.com (192.168.0.62) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Wed, 2 Jul 2025 09:19:56 +0800 From: Jammy Huang To: , , , , , , , , , Subject: [PATCH v6 0/2] ASPEED: Add mailbox driver for AST2700 series Date: Wed, 2 Jul 2025 09:19:54 +0800 Message-ID: <20250702011956.47479-1-jammy_huang@aspeedtech.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain Add mailbox controller driver for AST27XX SoCs, which provides independent tx/rx mailbox between different processors. There are 4 channels for each tx/rx mailbox and each channel has an 32-byte FIFO. v6 changes: - Update document 1. Update description to preserve paragraphs. 2. Update for property, reg. 3. Add reg-names. 4. Add 'Reviewed-by' from Krok. - Update driver 1. Use devm_platform_ioremap_resource_byname since we add reg-names now. 2. Update error code for ch not enabled. v5 changes: - Update document 1. Separate reg from 1 to 2. 1st is tx controller; 2nd is rx. 2. Remove 'Reviewed-by' since the patch has changed. - Update driver, no functional changes. 1. Update since there is 2 reg base now. 2. Refine reg definitions 3. Add spinlock to protect registers 4. Use bool as return value for ast2700_mbox_tx_done 5. Rename variable from drv_data to dev_data. v4 changes: - Update driver, no functional changes. 1. Remove unused variable, rx_buff, in struct ast2700_mbox. 2. Remove unneeded cast on device_get_match_data. 3. Remove the usage of writel/readl_relaxed. 4. Improve readability. v3 changes: - Correct document 1. Use 32-bit addressing in dts example property, reg. v2 changes: - Update document 1. Correct error in dts example. 2. Drop description for mbox-cell per suggestion previously. Jammy Huang (2): dt-bindings: mailbox: Add ASPEED AST2700 series SoC mailbox: aspeed: add mailbox driver for AST27XX series SoC .../mailbox/aspeed,ast2700-mailbox.yaml | 68 +++++ drivers/mailbox/Kconfig | 8 + drivers/mailbox/Makefile | 2 + drivers/mailbox/ast2700-mailbox.c | 240 ++++++++++++++++++ 4 files changed, 318 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/aspeed,ast2700-mailbox.yaml create mode 100644 drivers/mailbox/ast2700-mailbox.c base-commit: ec7714e4947909190ffb3041a03311a975350fe0 -- 2.25.1