From patchwork Fri Sep 6 08:25:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 13793718 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 A6014CE7AE8 for ; Fri, 6 Sep 2024 08:41:26 +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:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PlRpVtIBwwyT7sJiOXWleLS+M54tw81jUNBu+u7QyPQ=; b=hOxKj++TAaRXWuwKilsPrzkNim posV+4cV64t1EckvmAtfSxG3o3Fai6fJvgIJdp1pArp7Bw4l3BCv9CQs3S+WfzikMeF3ERqEZESQV kUrxc+/bMWIftnLN7M2RNWKU+DeEs/tVL5cgr7w3Fo2onea6oWfZLHv09ZxrOoqb0CMCPnsv8HdId VcohgXRuOswZ4hgO4UO4ssJtA9aefp601xO4AlScgKNEDE1JPupIeleU8OfEi7vdlTZBIBBH4eC4V ZKPZmjzSYRMYid7i/9LS/yt+0OH1fNTRfp45A9iJ7HlypMvR1S3RPsvbdOjWr5xzv2w3w7bmZkQXp QN4bnhRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1smUWq-0000000BNTm-3sTh; Fri, 06 Sep 2024 08:41:16 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1smUHW-0000000BItn-1vd2; Fri, 06 Sep 2024 08:25:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=PlRpVtIBwwyT7sJiOXWleLS+M54tw81jUNBu+u7QyPQ=; b=wvqISOnI+nXg6/aKRBUjPYc4nU aIekJMWtWF6lxphXBqUVLhwQbuMXXaII85xBabpcp8mX478IUzbRfYDhAGiSOICoIxsS3wQ0MyeU1 LOZClveyH+Tf3u8FIFWxR2QyM3Nx0g5xy3AZOLLrmgH/EpZSWKvORpIK2iqTAUJq57vHpykGH9Fz/ ULaxmJyv/Pa3lPQKPv2yx8OASCG9XMqzh1BK0Yxi1EMhg9q3eSMBfHOSzeRB66iglssy3/IfsgL4J 3YHDCHhxxqvs4lOEEwO3TQb/6QiJsoFRM9lnFTKILrDhbJfgKq2iCOwglx1E+vUeXyGpFuPb4cO+K 6EITMaCw==; Received: from i5e860d0f.versanet.de ([94.134.13.15] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1smUHQ-0000jF-RE; Fri, 06 Sep 2024 10:25:20 +0200 From: Heiko Stuebner To: mturquette@baylibre.com, sboyd@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-clk@vger.kernel.org, heiko@sntech.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org Subject: [PATCH v4 5/5] arm64: dts: rockchip: fix the pcie refclock oscillator on Rock 5 ITX Date: Fri, 6 Sep 2024 10:25:11 +0200 Message-ID: <20240906082511.2963890-6-heiko@sntech.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240906082511.2963890-1-heiko@sntech.de> References: <20240906082511.2963890-1-heiko@sntech.de> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240906_012526_525256_B0D09247 X-CRM114-Status: GOOD ( 16.77 ) 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 The Rock 5 ITX uses two PCIe controllers to drive both a M.2 slot and its SATA controller with 2 lanes each. The supply for the refclk oscillator is the same that supplies the M.2 slot, but the SATA controller port is supplied by a different rail. This leads to the effect that if the PCIe30x4 controller for the M.2 probes first, everything works normally. But if the PCIe30x2 controller that is connected to the SATA controller probes first, it will hang on the first DBI read as nothing will have enabled the refclock before. Fix this by describing the clock generator with its supplies so that both controllers can reference it as needed. Signed-off-by: Heiko Stuebner --- .../boot/dts/rockchip/rk3588-rock-5-itx.dts | 38 ++++++++++++++++++- 1 file changed, 36 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts index d0b922b8d67e..2d0bcf90bf0f 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts @@ -72,6 +72,15 @@ hdd-led2 { }; }; + /* Unnamed gated oscillator: 100MHz,3.3V,3225 */ + pcie30_port0_refclk: pcie30_port1_refclk: pcie-oscillator { + compatible = "gated-fixed-clock"; + #clock-cells = <0>; + clock-frequency = <100000000>; + clock-output-names = "pcie30_refclk"; + vdd-supply = <&vcc3v3_pi6c_05>; + }; + fan0: pwm-fan { compatible = "pwm-fan"; #cooling-cells = <2>; @@ -146,13 +155,14 @@ vcc3v3_lan: vcc3v3_lan_phy2: regulator-vcc3v3-lan { vin-supply = <&vcc_3v3_s3>; }; - vcc3v3_mkey: regulator-vcc3v3-mkey { + /* The PCIE30x4_PWREN_H controls two regulators */ + vcc3v3_mkey: vcc3v3_pi6c_05: regulator-vcc3v3-pi6c-05 { compatible = "regulator-fixed"; enable-active-high; gpios = <&gpio1 RK_PA4 GPIO_ACTIVE_HIGH>; pinctrl-names = "default"; pinctrl-0 = <&pcie30x4_pwren_h>; - regulator-name = "vcc3v3_mkey"; + regulator-name = "vcc3v3_pi6c_05"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; startup-delay-us = <5000>; @@ -513,6 +523,18 @@ &pcie30phy { /* ASMedia ASM1164 Sata controller */ &pcie3x2 { + /* + * The board has a "pcie_refclk" oscillator that needs enabling, + * so add it to the list of clocks. + */ + clocks = <&cru ACLK_PCIE_2L_MSTR>, <&cru ACLK_PCIE_2L_SLV>, + <&cru ACLK_PCIE_2L_DBI>, <&cru PCLK_PCIE_2L>, + <&cru CLK_PCIE_AUX1>, <&cru CLK_PCIE2L_PIPE>, + <&pcie30_port1_refclk>; + clock-names = "aclk_mst", "aclk_slv", + "aclk_dbi", "pclk", + "aux", "pipe", + "ref"; pinctrl-names = "default"; pinctrl-0 = <&pcie30x2_perstn_m1_l>; reset-gpios = <&gpio4 RK_PB0 GPIO_ACTIVE_HIGH>; @@ -522,6 +544,18 @@ &pcie3x2 { /* M.2 M.key */ &pcie3x4 { + /* + * The board has a "pcie_refclk" oscillator that needs enabling, + * so add it to the list of clocks. + */ + clocks = <&cru ACLK_PCIE_4L_MSTR>, <&cru ACLK_PCIE_4L_SLV>, + <&cru ACLK_PCIE_4L_DBI>, <&cru PCLK_PCIE_4L>, + <&cru CLK_PCIE_AUX0>, <&cru CLK_PCIE4L_PIPE>, + <&pcie30_port0_refclk>; + clock-names = "aclk_mst", "aclk_slv", + "aclk_dbi", "pclk", + "aux", "pipe", + "ref"; num-lanes = <2>; pinctrl-names = "default"; pinctrl-0 = <&pcie30x4_perstn_m1_l>;