From patchwork Thu Sep 26 06:07:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Zhu X-Patchwork-Id: 13812848 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 61594CCF9E9 for ; Thu, 26 Sep 2024 06:34:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=OXMu8ueBOb4BsJjcFwHUwahM+J4sXOaAotcdkHTUuJQ=; b=MTpufV6Nf0F25+gHWJlp15lz6B 4SEOgNl+JTj9qRsnprocSIVF8EieiTDEfsPn5tLtNbNlmgw8By+vKiUzHoN2KJ3OxgGlrQGOcrYz4 +4TXtCn/rHwe0G+j+v+AHRFgZM7jDMDZ5+TR/GxsGr3/BaySEhf3QeOf/ebaF0ot1fSDfMrpXlNIF uQQ53eGSsNPf30os3EfMIsMUtxdl2RbyvT2Ew02kxjpmr1hIoSBJ+DNwaRJhm2Gs5+jm8W021HvVz xZ7ydcqG2wHH2669/ixZ16bUxSAj3q+rsVrMLn+EDFBvOb7S8ZJJWAcY6iPIWLWxBNdZ/EaNLHQ7G vCYDjrSQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1sti4e-00000007L5J-01Mq; Thu, 26 Sep 2024 06:34:00 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sti1F-00000007KIh-1rxH for linux-arm-kernel@lists.infradead.org; Thu, 26 Sep 2024 06:30:30 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 1F0CE1A18F3; Thu, 26 Sep 2024 08:30:28 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id E278F1A0367; Thu, 26 Sep 2024 08:30:27 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 9E41D183F0C2; Thu, 26 Sep 2024 14:30:24 +0800 (+08) From: Richard Zhu To: l.stach@pengutronix.de, kwilczynski@kernel.org, bhelgaas@google.com, lpieralisi@kernel.org, frank.li@nxp.com, robh+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, krzysztof.kozlowski+dt@linaro.org, festevam@gmail.com, s.hauer@pengutronix.de Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, kernel@pengutronix.de, imx@lists.linux.dev, Richard Zhu Subject: [PATCH v3 2/9] PCI: imx6: Add ref clock for i.MX95 PCIe Date: Thu, 26 Sep 2024 14:07:46 +0800 Message-Id: <1727330873-17486-3-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1727330873-17486-1-git-send-email-hongxing.zhu@nxp.com> References: <1727330873-17486-1-git-send-email-hongxing.zhu@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240925_233029_622962_451DCC20 X-CRM114-Status: UNSURE ( 9.30 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add "ref" clock to enable reference clock. If use external clock, ref clock should point to external reference. If use internal clock, CREF_EN in LAST_TO_REG controls reference output, which implement in drivers/clk/imx/clk-imx95-blk-ctl.c. Signed-off-by: Richard Zhu Reviewed-by: Frank Li --- drivers/pci/controller/dwc/pci-imx6.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c index 0dbc333adcff..2aa02674c817 100644 --- a/drivers/pci/controller/dwc/pci-imx6.c +++ b/drivers/pci/controller/dwc/pci-imx6.c @@ -1480,6 +1480,7 @@ static const char * const imx8mm_clks[] = {"pcie_bus", "pcie", "pcie_aux"}; static const char * const imx8mq_clks[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux"}; static const char * const imx6sx_clks[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_inbound_axi"}; static const char * const imx8q_clks[] = {"mstr", "slv", "dbi"}; +static const char * const imx95_clks[] = {"pcie_bus", "pcie", "pcie_phy", "pcie_aux", "ref"}; static const struct imx_pcie_drvdata drvdata[] = { [IMX6Q] = { @@ -1593,8 +1594,8 @@ static const struct imx_pcie_drvdata drvdata[] = { [IMX95] = { .variant = IMX95, .flags = IMX_PCIE_FLAG_HAS_SERDES, - .clk_names = imx8mq_clks, - .clks_cnt = ARRAY_SIZE(imx8mq_clks), + .clk_names = imx95_clks, + .clks_cnt = ARRAY_SIZE(imx95_clks), .ltssm_off = IMX95_PE0_GEN_CTRL_3, .ltssm_mask = IMX95_PCIE_LTSSM_EN, .mode_off[0] = IMX95_PE0_GEN_CTRL_1,