From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 661D3CD5BC9 for ; Mon, 25 May 2026 14:19:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4CTP90J/hy44kpLFjjCH8yLUi89CgbwDXriswd/zuio=; b=Rf0LaVfu+8ADoA crorbgbJfVDKUn5z5xpOI4rl9wM+eRMElo4z0wb//4zsJnsCW4J3TD/CKSYp3B8s9ZTbkVyOpgkwf bDBUk4A0ruQMkoAIohhjCyyDM5iaSUNLpEl97ltufQxS2txguCSI13u0mBehQRqtsY3qmXz/32bXH 24ri1Cx638vBJ3JzYiDUcMWhZn0EgtekP9VItd7u+iaNGYZPtV0pc6pFfFkPVV+FdSikiy8dgVDYk 0EIvI9OnbTKPURoUUpjEmqnwyBGpYy0GcgTSYgV2hzDJgoRQDVUeTaddpFBv1+2MxaHZFlqTiCo8J w855i0Awk92Uui5XkMDg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wRW9a-0000000HP6n-1foz; Mon, 25 May 2026 14:19:38 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wRW9X-0000000HP5j-2cOb for linux-i3c@lists.infradead.org; Mon, 25 May 2026 14:19:36 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 59D584059A; Mon, 25 May 2026 14:19:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E88E1F00A3A; Mon, 25 May 2026 14:19:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779718775; bh=bPu7j/mMHJlEE+0Cgycs0SQITX74H+h2HkTBrHZqBMs=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=MuUrOMR6rcurzMMB4nRyiG2hEVzBzqU6B6Lp3bdj1TI0y2xEAq2vWSJtvPtSJSmTN UmE2ERXJB3NOfAax94J+jOv3bsEA2WQN2f1U9rRTpUzu7TSwzVBva3Ep5Aub8atT8d IVpFjja1vBFovgd1Dw0swLLqvSl0EWL6U3yr9YfU7pP5AEeBNkI0KpCOJvX6ieqJLR tZrOFTIOJfJNCyDGMWCtaz70DbND/kf9+cpVXGDNvl3Eh5d+QnvydYLOup3lTv8VkP Z+S6HW3NLPw7tZD//a8NHhH3V1dqZESB/qWezN3iab1Qnb06HsH1eUbiMwWsOwd1+t ytcgSZR9S9A2g== From: Jisheng Zhang To: Alexandre Belloni , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel Cc: linux-i3c@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH v4 3/3] i3c: dw: Add apb reset support Date: Mon, 25 May 2026 22:00:18 +0800 Message-ID: <20260525140018.19598-4-jszhang@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260525140018.19598-1-jszhang@kernel.org> References: <20260525140018.19598-1-jszhang@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260525_071935_690134_8AECED22 X-CRM114-Status: GOOD ( 10.74 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org Add support of apb reset which is to reset the APB interface. Signed-off-by: Jisheng Zhang --- drivers/i3c/master/dw-i3c-master.c | 7 +++++++ drivers/i3c/master/dw-i3c-master.h | 1 + 2 files changed, 8 insertions(+) diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 655693a2187e..9de54d584bc3 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -1591,6 +1591,11 @@ int dw_i3c_common_probe(struct dw_i3c_master *master, if (IS_ERR(master->core_rst)) return PTR_ERR(master->core_rst); + master->apb_rst = devm_reset_control_get_optional_exclusive_deasserted(&pdev->dev, + "apb_rst"); + if (IS_ERR(master->apb_rst)) + return PTR_ERR(master->apb_rst); + spin_lock_init(&master->xferqueue.lock); INIT_LIST_HEAD(&master->xferqueue.list); @@ -1765,6 +1770,7 @@ static int __maybe_unused dw_i3c_master_runtime_suspend(struct device *dev) dw_i3c_master_disable(master); reset_control_assert(master->core_rst); + reset_control_assert(master->apb_rst); dw_i3c_master_disable_clks(master); pinctrl_pm_select_sleep_state(dev); return 0; @@ -1777,6 +1783,7 @@ static int __maybe_unused dw_i3c_master_runtime_resume(struct device *dev) pinctrl_pm_select_default_state(dev); dw_i3c_master_enable_clks(master); reset_control_deassert(master->core_rst); + reset_control_deassert(master->apb_rst); dw_i3c_master_set_intr_regs(master); dw_i3c_master_restore_timing_regs(master); diff --git a/drivers/i3c/master/dw-i3c-master.h b/drivers/i3c/master/dw-i3c-master.h index c5cb695c16ab..a4ba60043288 100644 --- a/drivers/i3c/master/dw-i3c-master.h +++ b/drivers/i3c/master/dw-i3c-master.h @@ -37,6 +37,7 @@ struct dw_i3c_master { struct dw_i3c_master_caps caps; void __iomem *regs; struct reset_control *core_rst; + struct reset_control *apb_rst; struct clk *core_clk; struct clk *pclk; char version[5]; -- 2.53.0 -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c