From patchwork Sat May 14 11:59:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 12849756 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB9BCC433FE for ; Sat, 14 May 2022 12:00:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232064AbiENMAF (ORCPT ); Sat, 14 May 2022 08:00:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232036AbiENMAC (ORCPT ); Sat, 14 May 2022 08:00:02 -0400 Received: from mxout1.routing.net (mxout1.routing.net [IPv6:2a03:2900:1:a::a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B51B238; Sat, 14 May 2022 04:59:58 -0700 (PDT) Received: from mxbox3.masterlogin.de (unknown [192.168.10.78]) by mxout1.routing.net (Postfix) with ESMTP id D379D3FFD5; Sat, 14 May 2022 11:59:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailerdienst.de; s=20200217; t=1652529597; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=IAsHMgWaTeifT9oHZKT7MIkb2mXov9xmYNWYjnzFv4I=; b=KrRd5jdRTSSGat2gh6COzuHg1Dfm12wrxNRt7upHExngBZH0TPuDNNAlSE7egD7BgPRG+j I/LEJj+pC0cSyJTIJ7pOQ9yu2nO0CaMeM+SEX7Ust0Jz/NmAwMAFWIUySqXb1Im3DpBw9y Bu0ah4Dpl04NZNX+ZnGBTL9dnHkyPVc= Received: from localhost.localdomain (fttx-pool-217.61.148.252.bambit.de [217.61.148.252]) by mxbox3.masterlogin.de (Postfix) with ESMTPSA id DBC5B360696; Sat, 14 May 2022 11:59:55 +0000 (UTC) From: Frank Wunderlich To: linux-rockchip@lists.infradead.org Cc: Frank Wunderlich , Bjorn Helgaas , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Kishon Vijay Abraham I , Vinod Koul , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Philipp Zabel , Johan Jonker , Peter Geis , Michael Riesch , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org Subject: [RFC v3 1/5] dt-bindings: phy: rockchip: add PCIe v3 phy Date: Sat, 14 May 2022 13:59:42 +0200 Message-Id: <20220514115946.8858-2-linux@fw-web.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220514115946.8858-1-linux@fw-web.de> References: <20220514115946.8858-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: 707fb3cc-767b-4f44-8e0e-2da81b096e9e Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Frank Wunderlich Add a new binding file for Rockchip PCIe v3 phy driver. Signed-off-by: Frank Wunderlich Reviewed-by: Krzysztof Kozlowski --- v3: - drop quotes - drop rk3588 - make clockcount fixed to 3 - full path for binding header file - drop phy-mode and its header and add lane-map v2: dt-bindings: rename yaml for PCIe v3 rockchip-pcie3-phy.yaml => rockchip,pcie3-phy.yaml changes in pcie3 phy yaml - change clock names to ordered const list - extend pcie30-phymode description - add phy-cells to required properties - drop unevaluatedProperties - example with 1 clock each line - use default property instead of text describing it - update license --- .../bindings/phy/rockchip,pcie3-phy.yaml | 82 +++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml diff --git a/Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml b/Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml new file mode 100644 index 000000000000..ac82f551bbfb --- /dev/null +++ b/Documentation/devicetree/bindings/phy/rockchip,pcie3-phy.yaml @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/rockchip,pcie3-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip PCIe v3 phy + +maintainers: + - Heiko Stuebner + +properties: + compatible: + enum: + - rockchip,rk3568-pcie3-phy + + reg: + maxItems: 1 + + clocks: + minItems: 3 + maxItems: 3 + + clock-names: + items: + - const: refclk_m + - const: refclk_n + - const: pclk + + minItems: 3 + + lane-map: + description: which lanes (by position) should be mapped to which + controller (value). 0 means lane unused, higher value means used. + (controller-number +1 ) + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 2 + maxItems: 16 + items: + minimum: 0 + maximum: 16 + + "#phy-cells": + const: 0 + + resets: + maxItems: 1 + + reset-names: + const: phy + + rockchip,phy-grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle to the syscon managing the phy "general register files" + + rockchip,pipe-grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: phandle to the syscon managing the pipe "general register files" + +required: + - compatible + - reg + - rockchip,phy-grf + - "#phy-cells" + +additionalProperties: false + +examples: + - | + #include + pcie30phy: phy@fe8c0000 { + compatible = "rockchip,rk3568-pcie3-phy"; + reg = <0x0 0xfe8c0000 0x0 0x20000>; + #phy-cells = <0>; + clocks = <&pmucru CLK_PCIE30PHY_REF_M>, + <&pmucru CLK_PCIE30PHY_REF_N>, + <&cru PCLK_PCIE30PHY>; + clock-names = "refclk_m", "refclk_n", "pclk"; + resets = <&cru SRST_PCIE30PHY>; + reset-names = "phy"; + rockchip,phy-grf = <&pcie30_phy_grf>; + }; From patchwork Sat May 14 11:59:43 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 12849757 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1A184C433EF for ; Sat, 14 May 2022 12:00:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232075AbiENMAH (ORCPT ); Sat, 14 May 2022 08:00:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49702 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232021AbiENMAC (ORCPT ); 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Sat, 14 May 2022 11:59:56 +0000 (UTC) From: Frank Wunderlich To: linux-rockchip@lists.infradead.org Cc: Frank Wunderlich , Bjorn Helgaas , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Kishon Vijay Abraham I , Vinod Koul , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Philipp Zabel , Johan Jonker , Peter Geis , Michael Riesch , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org Subject: [RFC v3 2/5] dt-bindings: soc: grf: add pcie30-{phy,pipe}-grf Date: Sat, 14 May 2022 13:59:43 +0200 Message-Id: <20220514115946.8858-3-linux@fw-web.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220514115946.8858-1-linux@fw-web.de> References: <20220514115946.8858-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: 20ca8f05-a1b3-4470-918c-07cf40a24a11 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Frank Wunderlich Add compatibles for PCIe v3 General Register Files. Signed-off-by: Frank Wunderlich Acked-by: Krzysztof Kozlowski --- v3: - fix order of grf-bindings v2: - add soc-part to pcie3-phy-grf --- Documentation/devicetree/bindings/soc/rockchip/grf.yaml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml index 3be3cfd52f7b..a854e1f10d63 100644 --- a/Documentation/devicetree/bindings/soc/rockchip/grf.yaml +++ b/Documentation/devicetree/bindings/soc/rockchip/grf.yaml @@ -16,7 +16,10 @@ properties: - enum: - rockchip,rk3288-sgrf - rockchip,rk3566-pipe-grf + - rockchip,rk3568-pcie3-phy-grf - rockchip,rk3568-usb2phy-grf + - rockchip,rk3588-pcie3-phy-grf + - rockchip,rk3588-pcie3-pipe-grf - rockchip,rv1108-usbgrf - const: syscon - items: From patchwork Sat May 14 11:59:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 12849758 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B941C43217 for ; Sat, 14 May 2022 12:00:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232077AbiENMAI (ORCPT ); Sat, 14 May 2022 08:00:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232038AbiENMAC (ORCPT ); Sat, 14 May 2022 08:00:02 -0400 Received: from mxout4.routing.net (mxout4.routing.net [IPv6:2a03:2900:1:a::9]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 734BBBAC; Sat, 14 May 2022 05:00:00 -0700 (PDT) Received: from mxbox3.masterlogin.de (unknown [192.168.10.78]) by mxout4.routing.net (Postfix) with ESMTP id C13731012C2; Sat, 14 May 2022 11:59:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailerdienst.de; s=20200217; t=1652529598; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yQ98qupSlXzHtWE5GKXQyna+H8aAyAQi+TaC+KQKvKM=; b=H9JkecJFfn5RO9leWDxX4wp84w8jPQjdSVRTStORDRsvgv+EqGfvNGvdLk3Z95sWAFsc2L IHFVQcJ/uzXA0GPQgVPxh2auCGvDdFuXfhi9dslm0wwtLNCrGp6UTsECE7rz1ou4SGm/g3 EbDqr755pfzvCLR3yFPqxJt4pKWrSfU= Received: from localhost.localdomain (fttx-pool-217.61.148.252.bambit.de [217.61.148.252]) by mxbox3.masterlogin.de (Postfix) with ESMTPSA id B654D360502; Sat, 14 May 2022 11:59:57 +0000 (UTC) From: Frank Wunderlich To: linux-rockchip@lists.infradead.org Cc: Frank Wunderlich , Bjorn Helgaas , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Kishon Vijay Abraham I , Vinod Koul , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Philipp Zabel , Johan Jonker , Peter Geis , Michael Riesch , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, Shawn Lin Subject: [RFC v3 3/5] phy: rockchip: Support PCIe v3 Date: Sat, 14 May 2022 13:59:44 +0200 Message-Id: <20220514115946.8858-4-linux@fw-web.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220514115946.8858-1-linux@fw-web.de> References: <20220514115946.8858-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: c2eb05cf-e561-4c99-871c-5219e161c753 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Shawn Lin RK3568 supports PCIe v3 using not Combphy like PCIe v2 on rk3566. It use a dedicated PCIe-phy. Add support for this. Initial support by Shawn Lin, modifications by Peter Geis and Frank Wunderlich. Add lane-map support for splitting pcie-lanes across controllers. The lane-map is an array where x=0 means lane is disabled and x > 0 means controller x is assigned to phy lane. Signed-off-by: Shawn Lin Suggested-by: Peter Geis Signed-off-by: Frank Wunderlich --- v3: - change dt-binding include - change reset to devm_reset_control_get_optional_exclusive exit on error and lower severity of message if unset - fix from peter: disable reg-write for phy-mode in rockchip_p3phy_probe - move bifurcation/lane-map support from PCIe to phy driver v2: - move dt-bindings header into separate patch - use BIT-macro - make constants better readable - use dev_err instead of pr_* - change dt-binding include due to renaming (phy-snps-pcie3.h => phy-rockchip-pcie3.h) - use exclusive variant of devm_reset_control_get{,_exclusive} - fix semicolon.cocci warnings reported by kernel test robot --- driver was taken from linux 5.10 based on in https://github.com/JeffyCN/mirrors which now has disappeared --- drivers/phy/rockchip/Kconfig | 9 + drivers/phy/rockchip/Makefile | 1 + .../phy/rockchip/phy-rockchip-snps-pcie3.c | 317 ++++++++++++++++++ include/linux/phy/pcie.h | 12 + 4 files changed, 339 insertions(+) create mode 100644 drivers/phy/rockchip/phy-rockchip-snps-pcie3.c create mode 100644 include/linux/phy/pcie.h diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig index 9022e395c056..94360fc96a6f 100644 --- a/drivers/phy/rockchip/Kconfig +++ b/drivers/phy/rockchip/Kconfig @@ -83,6 +83,15 @@ config PHY_ROCKCHIP_PCIE help Enable this to support the Rockchip PCIe PHY. +config PHY_ROCKCHIP_SNPS_PCIE3 + tristate "Rockchip Snps PCIe3 PHY Driver" + depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST + depends on HAS_IOMEM + select GENERIC_PHY + select MFD_SYSCON + help + Enable this to support the Rockchip snps PCIe3 PHY. + config PHY_ROCKCHIP_TYPEC tristate "Rockchip TYPEC PHY Driver" depends on OF && (ARCH_ROCKCHIP || COMPILE_TEST) diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile index a5041efb5b8f..7eab129230d1 100644 --- a/drivers/phy/rockchip/Makefile +++ b/drivers/phy/rockchip/Makefile @@ -8,5 +8,6 @@ obj-$(CONFIG_PHY_ROCKCHIP_INNO_HDMI) += phy-rockchip-inno-hdmi.o obj-$(CONFIG_PHY_ROCKCHIP_INNO_USB2) += phy-rockchip-inno-usb2.o obj-$(CONFIG_PHY_ROCKCHIP_NANENG_COMBO_PHY) += phy-rockchip-naneng-combphy.o obj-$(CONFIG_PHY_ROCKCHIP_PCIE) += phy-rockchip-pcie.o +obj-$(CONFIG_PHY_ROCKCHIP_SNPS_PCIE3) += phy-rockchip-snps-pcie3.o obj-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o diff --git a/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c b/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c new file mode 100644 index 000000000000..9d8fadff8a04 --- /dev/null +++ b/drivers/phy/rockchip/phy-rockchip-snps-pcie3.c @@ -0,0 +1,317 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Rockchip PCIE3.0 phy driver + * + * Copyright (C) 2020 Rockchip Electronics Co., Ltd. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Register for RK3568 */ +#define GRF_PCIE30PHY_CON1 0x4 +#define GRF_PCIE30PHY_CON6 0x18 +#define GRF_PCIE30PHY_CON9 0x24 +#define GRF_PCIE30PHY_STATUS0 0x80 +#define SRAM_INIT_DONE(reg) (reg & BIT(14)) + +#define RK3568_BIFURCATION_LANE_0_1 BIT(0) + +/* Register for RK3588 */ +#define PHP_GRF_PCIESEL_CON 0x100 +#define RK3588_PCIE3PHY_GRF_CMN_CON0 0x0 +#define RK3588_PCIE3PHY_GRF_PHY0_STATUS1 0x904 +#define RK3588_PCIE3PHY_GRF_PHY1_STATUS1 0xa04 +#define RK3588_SRAM_INIT_DONE(reg) (reg & BIT(0)) + +#define RK3588_BIFURCATION_LANE_0_1 BIT(0) +#define RK3588_BIFURCATION_LANE_2_3 BIT(1) +#define RK3588_LANE_AGGREGATION BIT(2) + +struct rockchip_p3phy_ops; + +struct rockchip_p3phy_priv { + const struct rockchip_p3phy_ops *ops; + void __iomem *mmio; + /* mode: RC, EP */ + int mode; + /* pcie30_phymode: Aggregation, Bifurcation */ + int pcie30_phymode; + struct regmap *phy_grf; + struct regmap *pipe_grf; + struct reset_control *p30phy; + struct phy *phy; + struct clk_bulk_data *clks; + int num_clks; + int num_lanes; + u8 lanes[4]; +}; + +struct rockchip_p3phy_ops { + int (*phy_init)(struct rockchip_p3phy_priv *priv); +}; + +static int rockchip_p3phy_set_mode(struct phy *phy, enum phy_mode mode, int submode) +{ + struct rockchip_p3phy_priv *priv = phy_get_drvdata(phy); + + /* Actually We don't care EP/RC mode, but just record it */ + switch (submode) { + case PHY_MODE_PCIE_RC: + priv->mode = PHY_MODE_PCIE_RC; + break; + case PHY_MODE_PCIE_EP: + priv->mode = PHY_MODE_PCIE_EP; + break; + default: + dev_err(&phy->dev, "%s, invalid mode\n", __func__); + return -EINVAL; + } + + return 0; +} + +static int rockchip_p3phy_rk3568_init(struct rockchip_p3phy_priv *priv) +{ + struct phy *phy = priv->phy; + bool bifurcation = false; + int ret; + u32 reg; + + /* Deassert PCIe PMA output clamp mode */ + regmap_write(priv->phy_grf, GRF_PCIE30PHY_CON9, BIT(15) | BIT(31)); + + for (int i = 0; i < priv->num_lanes; i++) { + dev_info(&phy->dev, "lane number %d, val %d\n", i, priv->lanes[i]); + if (priv->lanes[i] > 1) + bifurcation = true; + } + + /* Set bifurcation if needed, and it doesn't care RC/EP */ + if (bifurcation) { + dev_info(&phy->dev, "bifurcation enabled\n"); + regmap_write(priv->phy_grf, GRF_PCIE30PHY_CON6, + (0xf << 16) | RK3568_BIFURCATION_LANE_0_1); + regmap_write(priv->phy_grf, GRF_PCIE30PHY_CON1, + BIT(15) | BIT(31)); + } else { + dev_info(&phy->dev, "bifurcation disabled\n"); + regmap_write(priv->phy_grf, GRF_PCIE30PHY_CON6, + (0xf << 16) & ~RK3568_BIFURCATION_LANE_0_1); + } + + reset_control_deassert(priv->p30phy); + + ret = regmap_read_poll_timeout(priv->phy_grf, + GRF_PCIE30PHY_STATUS0, + reg, SRAM_INIT_DONE(reg), + 0, 500); + if (ret) + dev_err(&priv->phy->dev, "%s: lock failed 0x%x, check input refclk and power supply\n", + __func__, reg); + return ret; +} + +static const struct rockchip_p3phy_ops rk3568_ops = { + .phy_init = rockchip_p3phy_rk3568_init, +}; + +static int rockchip_p3phy_rk3588_init(struct rockchip_p3phy_priv *priv) +{ + u32 reg = 0; + u8 mode = 0; + int ret; + + /* Deassert PCIe PMA output clamp mode */ + regmap_write(priv->phy_grf, RK3588_PCIE3PHY_GRF_CMN_CON0, BIT(8) | BIT(24)); + + /* Set bifurcation if needed */ + for (int i = 0; i < priv->num_lanes; i++) { + if (!priv->lanes[i]) + mode |= (BIT(i) << 3); + + if (priv->lanes[i] > 1) + mode |= (BIT(i) >> 1); + } + + if (!mode) + reg = RK3588_LANE_AGGREGATION; + else { + if (mode & (BIT(0) | BIT(1))) + reg |= RK3588_BIFURCATION_LANE_0_1; + + if (mode & (BIT(2) | BIT(3))) + reg |= RK3588_BIFURCATION_LANE_2_3; + } + + regmap_write(priv->phy_grf, RK3588_PCIE3PHY_GRF_CMN_CON0, (0x7<<16) | reg); + + /* Set pcie1ln_sel in PHP_GRF_PCIESEL_CON */ + if (!IS_ERR(priv->pipe_grf)) { + reg = (mode & (BIT(6) | BIT(7))) >> 6; + if (reg) + regmap_write(priv->pipe_grf, PHP_GRF_PCIESEL_CON, + (reg << 16) | reg); + } + + reset_control_deassert(priv->p30phy); + + ret = regmap_read_poll_timeout(priv->phy_grf, + RK3588_PCIE3PHY_GRF_PHY0_STATUS1, + reg, RK3588_SRAM_INIT_DONE(reg), + 0, 500); + ret |= regmap_read_poll_timeout(priv->phy_grf, + RK3588_PCIE3PHY_GRF_PHY1_STATUS1, + reg, RK3588_SRAM_INIT_DONE(reg), + 0, 500); + if (ret) + pr_err("%s: lock failed 0x%x, check input refclk and power supply\n", + __func__, reg); + return ret; +} + +static const struct rockchip_p3phy_ops rk3588_ops = { + .phy_init = rockchip_p3phy_rk3588_init, +}; + +static int rochchip_p3phy_init(struct phy *phy) +{ + struct rockchip_p3phy_priv *priv = phy_get_drvdata(phy); + int ret; + + ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks); + if (ret) { + pr_err("failed to enable PCIe bulk clks %d\n", ret); + return ret; + } + + reset_control_assert(priv->p30phy); + udelay(1); + + if (priv->ops->phy_init) { + ret = priv->ops->phy_init(priv); + if (ret) + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); + } + + return ret; +} + +static int rochchip_p3phy_exit(struct phy *phy) +{ + struct rockchip_p3phy_priv *priv = phy_get_drvdata(phy); + + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); + reset_control_assert(priv->p30phy); + return 0; +} + +static const struct phy_ops rochchip_p3phy_ops = { + .init = rochchip_p3phy_init, + .exit = rochchip_p3phy_exit, + .set_mode = rockchip_p3phy_set_mode, + .owner = THIS_MODULE, +}; + +static int rockchip_p3phy_probe(struct platform_device *pdev) +{ + struct phy_provider *phy_provider; + struct device *dev = &pdev->dev; + struct rockchip_p3phy_priv *priv; + struct device_node *np = dev->of_node; + struct resource *res; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->mmio = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->mmio)) { + ret = PTR_ERR(priv->mmio); + return ret; + } + + priv->ops = of_device_get_match_data(&pdev->dev); + if (!priv->ops) { + dev_err(&pdev->dev, "no of match data provided\n"); + return -EINVAL; + } + + priv->phy_grf = syscon_regmap_lookup_by_phandle(np, "rockchip,phy-grf"); + if (IS_ERR(priv->phy_grf)) { + dev_err(dev, "failed to find rockchip,phy_grf regmap\n"); + return PTR_ERR(priv->phy_grf); + } + + priv->pipe_grf = syscon_regmap_lookup_by_phandle(dev->of_node, + "rockchip,pipe-grf"); + if (IS_ERR(priv->pipe_grf)) + dev_info(dev, "failed to find rockchip,pipe_grf regmap\n"); + + priv->num_lanes = of_property_read_variable_u8_array(dev->of_node, "lane-map", + priv->lanes, 2, + ARRAY_SIZE(priv->lanes)); + + /* if no lane-map assume aggregation */ + if (priv->num_lanes == -EINVAL) { + dev_dbg(dev, "no lane-map property found\n"); + priv->num_lanes = 1; + priv->lanes[0] = 1; + } else if (priv->num_lanes < 0) { + dev_err(dev, "failed to read lane-map property %d\n", priv->num_lanes); + return priv->num_lanes; + } + + priv->phy = devm_phy_create(dev, NULL, &rochchip_p3phy_ops); + if (IS_ERR(priv->phy)) { + dev_err(dev, "failed to create combphy\n"); + return PTR_ERR(priv->phy); + } + + priv->p30phy = devm_reset_control_get_optional_exclusive(dev, "phy"); + if (IS_ERR(priv->p30phy)) { + return dev_err_probe(dev, PTR_ERR(priv->p30phy), + "failed to get phy reset control\n"); + } + if (!priv->p30phy) + dev_info(dev, "no phy reset control specified\n"); + + priv->num_clks = devm_clk_bulk_get_all(dev, &priv->clks); + if (priv->num_clks < 1) + return -ENODEV; + + dev_set_drvdata(dev, priv); + phy_set_drvdata(priv->phy, priv); + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + return PTR_ERR_OR_ZERO(phy_provider); +} + +static const struct of_device_id rockchip_p3phy_of_match[] = { + { .compatible = "rockchip,rk3568-pcie3-phy", .data = &rk3568_ops }, + { .compatible = "rockchip,rk3588-pcie3-phy", .data = &rk3588_ops }, + { }, +}; +MODULE_DEVICE_TABLE(of, rockchip_p3phy_of_match); + +static struct platform_driver rockchip_p3phy_driver = { + .probe = rockchip_p3phy_probe, + .driver = { + .name = "rockchip-snps-pcie3-phy", + .of_match_table = rockchip_p3phy_of_match, + }, +}; +module_platform_driver(rockchip_p3phy_driver); +MODULE_DESCRIPTION("Rockchip Synopsys PCIe 3.0 PHY driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/phy/pcie.h b/include/linux/phy/pcie.h new file mode 100644 index 000000000000..93c997f520fe --- /dev/null +++ b/include/linux/phy/pcie.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2021 Rockchip Electronics Co., Ltd. + */ +#ifndef __PHY_PCIE_H +#define __PHY_PCIE_H + +#define PHY_MODE_PCIE_RC 20 +#define PHY_MODE_PCIE_EP 21 +#define PHY_MODE_PCIE_BIFURCATION 22 + +#endif From patchwork Sat May 14 11:59:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 12849760 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50163C433EF for ; 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bh=Glmetg7VOhUPL0qlQ0pXRU7sW/p0R4UTZM6rOzVK5Ic=; b=uRWvSIF4M6FmsdmXD9PU2XUA8Fku6R03zp55SuQtQlgeEwW+oxKES8tD/dSOByJtss/kcb DiKF72paQQd+bjmnrBqTcSKO1q8aJna233fgBoEpjZHpU5MjL/RnkfReeKnz1lBE2Ntuj3 BTiMxOnHq7gyWSe6eAH6TTqC1A32PvA= Received: from localhost.localdomain (fttx-pool-217.61.148.252.bambit.de [217.61.148.252]) by mxbox3.masterlogin.de (Postfix) with ESMTPSA id B0CAA360696; Sat, 14 May 2022 11:59:58 +0000 (UTC) From: Frank Wunderlich To: linux-rockchip@lists.infradead.org Cc: Frank Wunderlich , Bjorn Helgaas , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Kishon Vijay Abraham I , Vinod Koul , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Philipp Zabel , Johan Jonker , Peter Geis , Michael Riesch , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org Subject: [RFC v3 4/5] arm64: dts: rockchip: rk3568: Add PCIe v3 nodes Date: Sat, 14 May 2022 13:59:45 +0200 Message-Id: <20220514115946.8858-5-linux@fw-web.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220514115946.8858-1-linux@fw-web.de> References: <20220514115946.8858-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: 4b31d101-afdf-45c9-8480-3aef5d99b3fc Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Frank Wunderlich Add nodes to rk356x devicetree to support PCIe v3. Co-developed-by: Peter Geis Signed-off-by: Frank Wunderlich --- v3: - fix from Peter: change bus-range and msi-map, msi-map needs to start from 0x0 v2: - change to compatible with soc-part - change rockchip,bifurcation to vendor unspecific bifurcation --- arch/arm64/boot/dts/rockchip/rk3568.dtsi | 122 +++++++++++++++++++++++ 1 file changed, 122 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3568.dtsi b/arch/arm64/boot/dts/rockchip/rk3568.dtsi index 5eafddf62edc..6dbe73c9cddf 100644 --- a/arch/arm64/boot/dts/rockchip/rk3568.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3568.dtsi @@ -42,6 +42,128 @@ qos_sata0: qos@fe190200 { reg = <0x0 0xfe190200 0x0 0x20>; }; + pcie30_phy_grf: syscon@fdcb8000 { + compatible = "rockchip,rk3568-pcie3-phy-grf", "syscon"; + reg = <0x0 0xfdcb8000 0x0 0x10000>; + }; + + pcie30phy: phy@fe8c0000 { + compatible = "rockchip,rk3568-pcie3-phy"; + reg = <0x0 0xfe8c0000 0x0 0x20000>; + #phy-cells = <0>; + clocks = <&pmucru CLK_PCIE30PHY_REF_M>, <&pmucru CLK_PCIE30PHY_REF_N>, + <&cru PCLK_PCIE30PHY>; + clock-names = "refclk_m", "refclk_n", "pclk"; + resets = <&cru SRST_PCIE30PHY>; + reset-names = "phy"; + rockchip,phy-grf = <&pcie30_phy_grf>; + status = "disabled"; + }; + + pcie3x1: pcie@fe270000 { + compatible = "rockchip,rk3568-pcie"; + #address-cells = <3>; + #size-cells = <2>; + bus-range = <0x0 0xf>; + clocks = <&cru ACLK_PCIE30X1_MST>, <&cru ACLK_PCIE30X1_SLV>, + <&cru ACLK_PCIE30X1_DBI>, <&cru PCLK_PCIE30X1>, + <&cru CLK_PCIE30X1_AUX_NDFT>; + clock-names = "aclk_mst", "aclk_slv", + "aclk_dbi", "pclk", "aux"; + device_type = "pci"; + interrupts = , + , + , + , + ; + interrupt-names = "sys", "pmc", "msg", "legacy", "err"; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 7>; + interrupt-map = <0 0 0 1 &pcie3x1_intc 0>, + <0 0 0 2 &pcie3x1_intc 1>, + <0 0 0 3 &pcie3x1_intc 2>, + <0 0 0 4 &pcie3x1_intc 3>; + linux,pci-domain = <1>; + num-ib-windows = <6>; + num-ob-windows = <2>; + max-link-speed = <3>; + msi-map = <0x0 &gic 0x1000 0x1000>; + num-lanes = <1>; + phys = <&pcie30phy>; + phy-names = "pcie-phy"; + power-domains = <&power RK3568_PD_PIPE>; + reg = <0x3 0xc0400000 0x0 0x00400000>, + <0x0 0xfe270000 0x0 0x00010000>, + <0x3 0x40000000 0x0 0x01000000>; + ranges = <0x01000000 0x0 0x01000000 0x3 0x41000000 0x0 0x00100000>, + <0x02000000 0x0 0x02000000 0x3 0x41100000 0x0 0x3ef00000>; + reg-names = "dbi", "apb", "config"; + resets = <&cru SRST_PCIE30X1_POWERUP>; + reset-names = "pipe"; + /* bifurcation; lane1 when using 1+1 */ + status = "disabled"; + + pcie3x1_intc: legacy-interrupt-controller { + interrupt-controller; + #address-cells = <0>; + #interrupt-cells = <1>; + interrupt-parent = <&gic>; + interrupts = ; + }; + }; + + pcie3x2: pcie@fe280000 { + compatible = "rockchip,rk3568-pcie"; + #address-cells = <3>; + #size-cells = <2>; + bus-range = <0x0 0xf>; + clocks = <&cru ACLK_PCIE30X2_MST>, <&cru ACLK_PCIE30X2_SLV>, + <&cru ACLK_PCIE30X2_DBI>, <&cru PCLK_PCIE30X2>, + <&cru CLK_PCIE30X2_AUX_NDFT>; + clock-names = "aclk_mst", "aclk_slv", + "aclk_dbi", "pclk", "aux"; + device_type = "pci"; + interrupts = , + , + , + , + ; + interrupt-names = "sys", "pmc", "msg", "legacy", "err"; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 7>; + interrupt-map = <0 0 0 1 &pcie3x2_intc 0>, + <0 0 0 2 &pcie3x2_intc 1>, + <0 0 0 3 &pcie3x2_intc 2>, + <0 0 0 4 &pcie3x2_intc 3>; + linux,pci-domain = <2>; + num-ib-windows = <6>; + num-ob-windows = <2>; + max-link-speed = <3>; + msi-map = <0x0 &gic 0x2000 0x1000>; + num-lanes = <2>; + phys = <&pcie30phy>; + phy-names = "pcie-phy"; + power-domains = <&power RK3568_PD_PIPE>; + reg = <0x3 0xc0800000 0x0 0x00400000>, + <0x0 0xfe280000 0x0 0x00010000>, + <0x3 0x80000000 0x0 0x01000000>; + ranges = <0x01000000 0x0 0x01000000 0x3 0x81000000 0x0 0x00100000>, + <0x02000000 0x0 0x02000000 0x3 0x81100000 0x0 0x3ef00000>; + reg-names = "dbi", "apb", "config"; + resets = <&cru SRST_PCIE30X2_POWERUP>; + reset-names = "pipe"; + /* bifurcation; lane0 when using 1+1 */ + status = "disabled"; + + pcie3x2_intc: legacy-interrupt-controller { + interrupt-controller; + #address-cells = <0>; + #interrupt-cells = <1>; + interrupt-parent = <&gic>; + interrupts = ; + }; + }; + gmac0: ethernet@fe2a0000 { compatible = "rockchip,rk3568-gmac", "snps,dwmac-4.20a"; reg = <0x0 0xfe2a0000 0x0 0x10000>; From patchwork Sat May 14 11:59:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 12849759 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7294C433EF for ; Sat, 14 May 2022 12:00:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232099AbiENMAJ (ORCPT ); Sat, 14 May 2022 08:00:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232054AbiENMAE (ORCPT ); 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Sat, 14 May 2022 11:59:59 +0000 (UTC) From: Frank Wunderlich To: linux-rockchip@lists.infradead.org Cc: Frank Wunderlich , Bjorn Helgaas , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Kishon Vijay Abraham I , Vinod Koul , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Philipp Zabel , Johan Jonker , Peter Geis , Michael Riesch , linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org Subject: [RFC v3 5/5] arm64: dts: rockchip: Add PCIe v3 nodes to BPI-R2-Pro Date: Sat, 14 May 2022 13:59:46 +0200 Message-Id: <20220514115946.8858-6-linux@fw-web.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220514115946.8858-1-linux@fw-web.de> References: <20220514115946.8858-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: 090e248d-fa9b-43c5-9787-98c61156afdf Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Frank Wunderlich Add Nodes to Bananapi-R2-Pro board to support PCIe v3 and set PCIe related regulators to always on. Suggested-by: Peter Geis Signed-off-by: Frank Wunderlich --- v3: - squash lane-map over bifurcation property - add comment which slot is M2 and which one if mPCIe - fixes from Peter: - drop regulator-always-on/regulator-boot-on from regulators - increase startup-delay-us for regulators - set phy-mode on PCIe3-phy - add num-lanes to PCIe overrides - add usb node for to PCIe/m2 - move lane-map from PCIe controller to PCIe-phy v2: - underscores in nodenames - rockchip,bifurcation to vendor unspecific bifurcation - fix trailing space --- .../boot/dts/rockchip/rk3568-bpi-r2-pro.dts | 90 +++++++++++++++++++ 1 file changed, 90 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts index 2700fb18a3bc..8b3b774a9dac 100644 --- a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts +++ b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts @@ -74,6 +74,62 @@ vcc5v0_sys: vcc5v0-sys { vin-supply = <&dc_12v>; }; + pcie30_avdd0v9: pcie30-avdd0v9 { + compatible = "regulator-fixed"; + regulator-name = "pcie30_avdd0v9"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <900000>; + regulator-max-microvolt = <900000>; + vin-supply = <&vcc3v3_sys>; + }; + + pcie30_avdd1v8: pcie30-avdd1v8 { + compatible = "regulator-fixed"; + regulator-name = "pcie30_avdd1v8"; + regulator-always-on; + regulator-boot-on; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + vin-supply = <&vcc3v3_sys>; + }; + + /* pi6c pcie clock generator feeds both ports */ + vcc3v3_pi6c_05: vcc3v3-pi6c-05-regulator { + compatible = "regulator-fixed"; + regulator-name = "vcc3v3_pcie"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + enable-active-high; + gpios = <&gpio0 RK_PD4 GPIO_ACTIVE_HIGH>; + startup-delay-us = <200000>; + vin-supply = <&vcc5v0_sys>; + }; + + /* actually fed by vcc3v3_sys, dependent on pi6c clock generator */ + vcc3v3_minipcie: vcc3v3-minipcie-regulator { + compatible = "regulator-fixed"; + regulator-name = "vcc3v3_minipcie"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + enable-active-high; + gpio = <&gpio0 RK_PC6 GPIO_ACTIVE_HIGH>; + startup-delay-us = <50000>; + vin-supply = <&vcc3v3_pi6c_05>; + }; + + /* actually fed by vcc3v3_sys, dependent on pi6c clock generator */ + vcc3v3_ngff: vcc3v3-ngff-regulator { + compatible = "regulator-fixed"; + regulator-name = "vcc3v3_ngff"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + enable-active-high; + gpio = <&gpio4 RK_PC1 GPIO_ACTIVE_HIGH>; + startup-delay-us = <50000>; + vin-supply = <&vcc3v3_pi6c_05>; + }; + vbus: vbus { compatible = "regulator-fixed"; regulator-name = "vbus"; @@ -411,6 +467,27 @@ rgmii_phy1: ethernet-phy@0 { }; }; +&pcie30phy { + lane-map = /bits/ 8 <1 2>; + status = "okay"; +}; + +&pcie3x1 { + /* M.2 slot */ + num-lanes = <1>; + reset-gpios = <&gpio3 RK_PA1 GPIO_ACTIVE_HIGH>; + vpcie3v3-supply = <&vcc3v3_ngff>; + status = "okay"; +}; + +&pcie3x2 { + /* mPCIe slot */ + num-lanes = <1>; + reset-gpios = <&gpio2 RK_PD6 GPIO_ACTIVE_HIGH>; + vpcie3v3-supply = <&vcc3v3_minipcie>; + status = "okay"; +}; + &pinctrl { leds { blue_led_pin: blue-led-pin { @@ -597,3 +674,16 @@ &usb2phy0_otg { phy-supply = <&vcc5v0_usb_otg>; status = "okay"; }; + +&usb2phy1 { + /* USB for PCIe/M2 */ + status = "okay"; +}; + +&usb2phy1_host { + status = "okay"; +}; + +&usb2phy1_otg { + status = "okay"; +};