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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFECAC433F5 for ; Tue, 14 Dec 2021 09:11:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232108AbhLNJLU (ORCPT ); Tue, 14 Dec 2021 04:11:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232095AbhLNJLT (ORCPT ); Tue, 14 Dec 2021 04:11:19 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EB81C061574; Tue, 14 Dec 2021 01:11:19 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 990F66136C; Tue, 14 Dec 2021 09:11:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD094C34604; Tue, 14 Dec 2021 09:11:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1639473078; bh=w7626f8HcKROGrs33zCccsrzf6AUCtEW/MrO3Jjcij8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=XnaFrQu98J/dily0qfeFE3Z1X7GGANk7yHjdbvE1HgFRCS2GALyF3WV1BzkdC2QhP +BX+S0PpLndh6Kr8we3RByMLZKlD0LKjDiK9iJ25oQwE62SaZ0qd29FuQTyPq1sOgI BQw28IDkNiMbSY6+5HxQ+6l0VIgAXX8Dk0SAcqDGK0yc2gsBSpLLT6MSWOy5LdY+0o 8HJ1Ct53eLYHuRN9sN5JlLF5AK7KsFWEfIzbpKsD/PcggRx82jufEHCv2udK/W86eJ EiegRf+cDoTuvUcid/Ro9VXSn8Yb025DxpE298aIQBeV4oM1bhoIf6b94Jd8X50G7p KbZcDewtWF+9A== Date: Tue, 14 Dec 2021 14:41:13 +0530 From: Vinod Koul To: Johan Jonker Cc: heiko@sntech.de, robh+dt@kernel.org, kishon@ti.com, p.zabel@pengutronix.de, yifeng.zhao@rock-chips.com, kever.yang@rock-chips.com, cl@rock-chips.com, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH v4 3/4] phy: rockchip: add naneng combo phy for RK3568 Message-ID: References: <20211208185449.16763-1-jbx6244@gmail.com> <20211208185449.16763-4-jbx6244@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211208185449.16763-4-jbx6244@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08-12-21, 19:54, Johan Jonker wrote: > From: Yifeng Zhao > > This patch implements a combo phy driver for Rockchip SoCs > with NaNeng IP block. This phy can be used as pcie-phy, usb3-phy, > sata-phy or sgmii-phy. > > Signed-off-by: Yifeng Zhao > Signed-off-by: Johan Jonker > --- > > TEST COMPILED ONLY! > Driver not verified with hardware! > --- > > Changed V4: > restyle > add devm_reset_control_array_get() > remove clk structure > change refclk DT parse > change dev_err message > add dot to phrase > add ext_refclk variable > add enable_ssc variable > rename rockchip_combphy_param_write > remove param_read > replace rockchip-naneng-combphy driver name > --- > drivers/phy/rockchip/Kconfig | 8 + > drivers/phy/rockchip/Makefile | 1 + > .../rockchip/phy-rockchip-naneng-combphy.c | 608 ++++++++++++++++++ > 3 files changed, 617 insertions(+) > create mode 100644 drivers/phy/rockchip/phy-rockchip-naneng-combphy.c > > diff --git a/drivers/phy/rockchip/Kconfig b/drivers/phy/rockchip/Kconfig > index e812adad7..9022e395c 100644 > --- a/drivers/phy/rockchip/Kconfig > +++ b/drivers/phy/rockchip/Kconfig > @@ -66,6 +66,14 @@ config PHY_ROCKCHIP_INNO_DSIDPHY > Enable this to support the Rockchip MIPI/LVDS/TTL PHY with > Innosilicon IP block. > > +config PHY_ROCKCHIP_NANENG_COMBO_PHY > + tristate "Rockchip NANENG COMBO PHY Driver" > + depends on ARCH_ROCKCHIP && OF > + select GENERIC_PHY > + help > + Enable this to support the Rockchip PCIe/USB3.0/SATA/QSGMII > + combo PHY with NaNeng IP block. > + > config PHY_ROCKCHIP_PCIE > tristate "Rockchip PCIe PHY Driver" > depends on (ARCH_ROCKCHIP && OF) || COMPILE_TEST > diff --git a/drivers/phy/rockchip/Makefile b/drivers/phy/rockchip/Makefile > index f0eec212b..a5041efb5 100644 > --- a/drivers/phy/rockchip/Makefile > +++ b/drivers/phy/rockchip/Makefile > @@ -6,6 +6,7 @@ obj-$(CONFIG_PHY_ROCKCHIP_INNO_CSIDPHY) += phy-rockchip-inno-csidphy.o > obj-$(CONFIG_PHY_ROCKCHIP_INNO_DSIDPHY) += phy-rockchip-inno-dsidphy.o > 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-$(CONFIG_PHY_ROCKCHIP_TYPEC) += phy-rockchip-typec.o > obj-$(CONFIG_PHY_ROCKCHIP_USB) += phy-rockchip-usb.o > diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c > new file mode 100644 > index 000000000..56aaeed62 > --- /dev/null > +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c > @@ -0,0 +1,608 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Rockchip PIPE USB3.0 PCIE SATA combphy driver > + * > + * Copyright (C) 2021 Rockchip Electronics Co., Ltd. > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#define BIT_WRITEABLE_SHIFT 16 > +#define REF_CLOCK_24MHz 24000000 How about 24 * MEGA (see units.h) > +#define REF_CLOCK_25MHz 25000000 > +#define REF_CLOCK_100MHz 100000000 empty line here pls > +/* RK3568 T22 COMBO PHY REG */ > +#define RK3568_T22_PHYREG5 0x14 > +#define T22_PHYREG5_PLL_DIV_MASK GENMASK(7, 6) > +#define T22_PHYREG5_PLL_DIV_SHIFT 6 > +#define T22_PHYREG5_PLL_DIV_2 1 > + > +#define RK3568_T22_PHYREG6 0x18 > +#define T22_PHYREG6_TX_RTERM_MASK GENMASK(7, 4) > +#define T22_PHYREG6_TX_RTERM_SHIFT 4 > +#define T22_PHYREG6_TX_RTERM_50OHM 0x8 > +#define T22_PHYREG6_RX_RTERM_MASK GENMASK(3, 0) > +#define T22_PHYREG6_RX_RTERM_SHIFT 0 You can avoid using SHIFT macros by defining register masks using BIT, GENMASK and then use FIELD_PREP() and FIELD_GET() to set and get register values > +#define T22_PHYREG6_RX_RTERM_44OHM 0xF > + > +#define RK3568_T22_PHYREG7 0x1C > +#define T22_PHYREG7_SSC_EN BIT(4) > + > +#define RK3568_T22_PHYREG10 0x28 > +#define T22_PHYREG10_SU_TRIM_0_7 0xF0 GENMASK() ? > + > +#define RK3568_T22_PHYREG11 0x2C > +#define T22_PHYREG11_PLL_LPF_ADJ 0x4 BIT(), here and other places applicable > + > +#define RK3568_T22_PHYREG12 0x30 > +#define T22_PHYREG12_RESISTER_MASK GENMASK(5, 4) > +#define T22_PHYREG12_RESISTER_SHIFT 0x4 > +#define T22_PHYREG12_RESISTER_HIGH_Z 0x3 > +#define T22_PHYREG12_CKRCV_AMP0 BIT(7) > + > +#define RK3568_T22_PHYREG13 0x34 > +#define T22_PHYREG13_CKRCV_AMP1 BIT(0) > + > +#define RK3568_T22_PHYREG14 0x38 > +#define T22_PHYREG14_CTLE_EN BIT(0) > +#define T22_PHYREG14_SSC_CNT_MASK GENMASK(7, 6) > +#define T22_PHYREG14_SSC_CNT_SHIFT 6 > +#define T22_PHYREG14_SSC_CNT_VALUE 0x1 > + > +#define RK3568_T22_PHYREG15 0x3C > +#define T22_PHYREG15_SSC_CNT_VALUE 0x5f > + > +#define RK3568_T22_PHYREG17 0x44 > +#define T22_PHYREG17_PLL_LOOP 0x32 > + > +#define RK3568_T22_PHYREG31 0x7C > +#define T22_PHYREG31_SSC_MASK GENMASK(7, 4) > +#define T22_PHYREG31_SSC_DIR_SHIFT 4 > +#define T22_PHYREG31_SSC_UPWARD 0 > +#define T22_PHYREG31_SSC_DOWNWARD 1 > +#define T22_PHYREG31_SSC_OFFSET_SHIFT 6 > +#define T22_PHYREG31_SSC_OFFSET_500PPM 1 > + > +#define RK3568_T22_PHYREG32 0x80 > +#define T22_PHYREG32_PLL_KVCO_MASK GENMASK(4, 2) > +#define T22_PHYREG32_PLL_KVCO_SHIFT 2 > +#define T22_PHYREG32_PLL_KVCO_VALUE 2 > + > +struct rockchip_combphy_priv; > + > +struct combphy_reg { > + u16 offset; > + u16 bitend; > + u16 bitstart; > + u16 disable; > + u16 enable; > +}; > + > +struct rockchip_combphy_grfcfg { > + struct combphy_reg pcie_mode_set; > + struct combphy_reg usb_mode_set; > + struct combphy_reg sgmii_mode_set; > + struct combphy_reg qsgmii_mode_set; > + struct combphy_reg pipe_rxterm_set; > + struct combphy_reg pipe_txelec_set; > + struct combphy_reg pipe_txcomp_set; > + struct combphy_reg pipe_clk_25m; > + struct combphy_reg pipe_clk_100m; > + struct combphy_reg pipe_phymode_sel; > + struct combphy_reg pipe_rate_sel; > + struct combphy_reg pipe_rxterm_sel; > + struct combphy_reg pipe_txelec_sel; > + struct combphy_reg pipe_txcomp_sel; > + struct combphy_reg pipe_clk_ext; > + struct combphy_reg pipe_sel_usb; > + struct combphy_reg pipe_sel_qsgmii; > + struct combphy_reg pipe_phy_status; > + struct combphy_reg con0_for_pcie; > + struct combphy_reg con1_for_pcie; > + struct combphy_reg con2_for_pcie; > + struct combphy_reg con3_for_pcie; > + struct combphy_reg con0_for_sata; > + struct combphy_reg con1_for_sata; > + struct combphy_reg con2_for_sata; > + struct combphy_reg con3_for_sata; > + struct combphy_reg pipe_con0_for_sata; > + struct combphy_reg pipe_sgmii_mac_sel; > + struct combphy_reg pipe_xpcs_phy_ready; > + struct combphy_reg u3otg0_port_en; > + struct combphy_reg u3otg1_port_en; > +}; > + > +struct rockchip_combphy_cfg { > + const struct rockchip_combphy_grfcfg *grfcfg; > + int (*combphy_cfg)(struct rockchip_combphy_priv *priv); > +}; > + > +struct rockchip_combphy_priv { > + u8 mode; > + void __iomem *mmio; > + int num_clks; > + struct clk_bulk_data *clks; > + struct device *dev; > + struct regmap *pipe_grf; > + struct regmap *phy_grf; > + struct phy *phy; > + struct reset_control *phy_rst; > + const struct rockchip_combphy_cfg *cfg; > + bool enable_ssc; > + bool ext_refclk; > + struct clk *refclk; > +}; > + > +static int rockchip_combphy_param_write(struct regmap *base, > + const struct combphy_reg *reg, bool en) pls align to previous line open brace (hint, checkpatch with --strict will find these for you) > +{ > + u32 val, mask, tmp; > + > + tmp = en ? reg->enable : reg->disable; > + mask = GENMASK(reg->bitend, reg->bitstart); > + val = (tmp << reg->bitstart) | (mask << BIT_WRITEABLE_SHIFT); > + > + return regmap_write(base, reg->offset, val); > +} > + > +static u32 rockchip_combphy_is_ready(struct rockchip_combphy_priv *priv) > +{ > + const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg; > + u32 mask, val; > + > + mask = GENMASK(cfg->pipe_phy_status.bitend, > + cfg->pipe_phy_status.bitstart); > + > + regmap_read(priv->phy_grf, cfg->pipe_phy_status.offset, &val); > + val = (val & mask) >> cfg->pipe_phy_status.bitstart; > + > + return val; > +} > + > +static int rockchip_combphy_set_mode(struct rockchip_combphy_priv *priv) > +{ > + int ret = 0; > + > + switch (priv->mode) { > + case PHY_TYPE_PCIE: > + case PHY_TYPE_USB3: > + case PHY_TYPE_SATA: > + case PHY_TYPE_SGMII: > + case PHY_TYPE_QSGMII: > + if (priv->cfg->combphy_cfg) > + ret = priv->cfg->combphy_cfg(priv); > + break; > + default: > + dev_err(priv->dev, "incompatible PHY type\n"); > + return -EINVAL; > + } > + > + if (ret) > + dev_err(priv->dev, "failed to init phy for phy mode %x\n", priv->mode); > + > + return ret; > +} > + > +static int rockchip_combphy_init(struct phy *phy) > +{ > + struct rockchip_combphy_priv *priv = phy_get_drvdata(phy); > + const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg; > + u32 val; > + int ret; > + > + ret = clk_bulk_prepare_enable(priv->num_clks, priv->clks); > + if (ret) { > + dev_err(priv->dev, "failed to enable clks\n"); > + return ret; > + } > + > + ret = rockchip_combphy_set_mode(priv); > + if (ret) > + goto err_clk; > + > + ret = reset_control_deassert(priv->phy_rst); > + if (ret) > + goto err_clk; > + > + if (priv->mode == PHY_TYPE_USB3) { > + ret = readx_poll_timeout_atomic(rockchip_combphy_is_ready, > + priv, val, > + val == cfg->pipe_phy_status.enable, > + 10, 1000); > + if (ret) > + dev_warn(priv->dev, "wait phy status ready timeout\n"); > + } > + > + return 0; > + > +err_clk: > + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); > + > + return ret; > +} > + > +static int rockchip_combphy_exit(struct phy *phy) > +{ > + struct rockchip_combphy_priv *priv = phy_get_drvdata(phy); > + > + clk_bulk_disable_unprepare(priv->num_clks, priv->clks); > + reset_control_assert(priv->phy_rst); > + > + return 0; > +} > + > +static const struct phy_ops rochchip_combphy_ops = { > + .init = rockchip_combphy_init, > + .exit = rockchip_combphy_exit, > + .owner = THIS_MODULE, > +}; > + > +static struct phy *rockchip_combphy_xlate(struct device *dev, struct of_phandle_args *args) > +{ > + struct rockchip_combphy_priv *priv = dev_get_drvdata(dev); > + > + if (args->args_count != 1) { > + dev_err(dev, "invalid number of arguments\n"); > + return ERR_PTR(-EINVAL); > + } > + > + if (priv->mode != PHY_NONE && priv->mode != args->args[0]) > + dev_warn(dev, "phy type select %d overwriting type %d\n", > + args->args[0], priv->mode); > + > + priv->mode = args->args[0]; > + > + return priv->phy; > +} > + > +static int rockchip_combphy_parse_dt(struct device *dev, struct rockchip_combphy_priv *priv) > +{ > + const struct rockchip_combphy_cfg *phy_cfg = priv->cfg; > + int mac_id; > + int i; > + > + priv->num_clks = devm_clk_bulk_get_all(dev, &priv->clks); > + if (priv->num_clks < 1) > + return -EINVAL; > + > + priv->refclk = NULL; > + for (i = 0; i < priv->num_clks; i++) { > + if (!strncmp(priv->clks[i].id, "ref", 3)) { > + priv->refclk = priv->clks[i].clk; > + break; > + } > + } > + > + if (!priv->refclk) { > + dev_err(dev, "no refclk found\n"); > + return -EINVAL; > + } > + > + priv->pipe_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,pipe-grf"); > + if (IS_ERR(priv->pipe_grf)) { > + dev_err(dev, "failed to find peri_ctrl pipe-grf regmap\n"); > + return PTR_ERR(priv->pipe_grf); > + } > + > + priv->phy_grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,pipe-phy-grf"); > + if (IS_ERR(priv->phy_grf)) { > + dev_err(dev, "failed to find peri_ctrl pipe-phy-grf regmap\n"); > + return PTR_ERR(priv->phy_grf); > + } > + > + if (device_property_present(dev, "rockchip,dis-u3otg0-port")) > + rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->u3otg0_port_en, > + false); > + > + if (device_property_present(dev, "rockchip,dis-u3otg1-port")) > + rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->u3otg1_port_en, > + false); > + > + priv->enable_ssc = device_property_present(dev, "rockchip,enable-ssc"); > + > + priv->ext_refclk = device_property_present(dev, "rockchip,ext-refclk"); > + > + if (!device_property_read_u32(dev, "rockchip,sgmii-mac-sel", &mac_id) && > + (mac_id > 0)) > + rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->pipe_sgmii_mac_sel, > + true); > + else > + rockchip_combphy_param_write(priv->pipe_grf, &phy_cfg->grfcfg->pipe_sgmii_mac_sel, > + false); > + > + priv->phy_rst = devm_reset_control_array_get(dev, false, false); > + if (IS_ERR(priv->phy_rst)) > + return dev_err_probe(dev, PTR_ERR(priv->phy_rst), "failed to get phy reset\n"); > + > + return 0; > +} > + > +static int rockchip_combphy_probe(struct platform_device *pdev) > +{ > + struct phy_provider *phy_provider; > + struct device *dev = &pdev->dev; > + struct rockchip_combphy_priv *priv; > + const struct rockchip_combphy_cfg *phy_cfg; > + struct resource *res; > + int ret; > + > + phy_cfg = of_device_get_match_data(dev); > + if (!phy_cfg) { > + dev_err(dev, "no OF match data provided\n"); > + return -EINVAL; > + } > + > + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); > + if (!priv) > + return -ENOMEM; > + > + priv->mmio = devm_platform_get_and_ioremap_resource(pdev, 0, &res); > + if (IS_ERR(priv->mmio)) { > + ret = PTR_ERR(priv->mmio); > + return ret; > + } > + > + priv->dev = dev; > + priv->mode = PHY_NONE; > + priv->cfg = phy_cfg; > + > + ret = rockchip_combphy_parse_dt(dev, priv); > + if (ret) > + return ret; > + > + ret = reset_control_assert(priv->phy_rst); > + if (ret) { > + dev_err(dev, "failed to reset phy\n"); > + return ret; > + } > + > + priv->phy = devm_phy_create(dev, NULL, &rochchip_combphy_ops); > + if (IS_ERR(priv->phy)) { > + dev_err(dev, "failed to create combphy\n"); > + return PTR_ERR(priv->phy); > + } > + > + dev_set_drvdata(dev, priv); > + phy_set_drvdata(priv->phy, priv); > + > + phy_provider = devm_of_phy_provider_register(dev, rockchip_combphy_xlate); > + > + return PTR_ERR_OR_ZERO(phy_provider); > +} > + > +static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv) > +{ > + const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg; > + unsigned long rate; > + u32 val; > + > + switch (priv->mode) { > + case PHY_TYPE_PCIE: > + /* Set SSC downward spread spectrum. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG31); > + val &= ~T22_PHYREG31_SSC_MASK; > + val |= T22_PHYREG31_SSC_DOWNWARD << T22_PHYREG31_SSC_DIR_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG31); > + > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_pcie, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_pcie, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_pcie, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_pcie, true); > + break; empty line here helps readability > + case PHY_TYPE_USB3: > + /* Set SSC downward spread spectrum. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG31); > + val &= ~T22_PHYREG31_SSC_MASK; > + val |= T22_PHYREG31_SSC_DOWNWARD << T22_PHYREG31_SSC_DIR_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG31); perhaps a updatel() macro to help with this? > + > + /* Enable adaptive CTLE for USB3.0 Rx. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG14); > + val |= T22_PHYREG14_CTLE_EN; > + writel(val, priv->mmio + RK3568_T22_PHYREG14); > + > + /* Set PLL KVCO fine tuning signals. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG32); > + val &= ~T22_PHYREG32_PLL_KVCO_MASK; > + val |= T22_PHYREG32_PLL_KVCO_VALUE << T22_PHYREG32_PLL_KVCO_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG32); > + > + /* Enable controlling random jitter. */ > + writel(T22_PHYREG11_PLL_LPF_ADJ, priv->mmio + RK3568_T22_PHYREG11); > + > + /* Set PLL input clock divider 1/2. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG5); > + val &= ~T22_PHYREG5_PLL_DIV_MASK; > + val |= T22_PHYREG5_PLL_DIV_2 << T22_PHYREG5_PLL_DIV_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG5); > + > + writel(T22_PHYREG17_PLL_LOOP, priv->mmio + RK3568_T22_PHYREG17); > + writel(T22_PHYREG10_SU_TRIM_0_7, priv->mmio + RK3568_T22_PHYREG10); > + > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_sel_usb, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->usb_mode_set, true); > + break; > + case PHY_TYPE_SATA: > + /* Enable adaptive CTLE for SATA Rx. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG14); > + val |= T22_PHYREG14_CTLE_EN; > + writel(val, priv->mmio + RK3568_T22_PHYREG14); > + /* > + * Set tx_rterm=50ohm and rx_rterm=44ohm for SATA. > + * 0: 60ohm, 8: 50ohm 15: 44ohm (by step abort 1ohm) > + */ > + val = T22_PHYREG6_TX_RTERM_50OHM << T22_PHYREG6_TX_RTERM_SHIFT; > + val |= T22_PHYREG6_RX_RTERM_44OHM << T22_PHYREG6_RX_RTERM_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG6); > + > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con0_for_sata, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con1_for_sata, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con2_for_sata, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->con3_for_sata, true); > + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con0_for_sata, true); > + break; > + case PHY_TYPE_SGMII: > + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_xpcs_phy_ready, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_phymode_sel, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_sel_qsgmii, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->sgmii_mode_set, true); > + break; > + case PHY_TYPE_QSGMII: > + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_xpcs_phy_ready, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_phymode_sel, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_rate_sel, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_sel_qsgmii, true); > + rockchip_combphy_param_write(priv->phy_grf, &cfg->qsgmii_mode_set, true); > + break; > + default: > + dev_err(priv->dev, "incompatible PHY type\n"); > + return -EINVAL; > + } > + > + rate = clk_get_rate(priv->refclk); > + > + switch (rate) { > + case REF_CLOCK_24MHz: > + if (priv->mode == PHY_TYPE_USB3 || priv->mode == PHY_TYPE_SATA) { > + /* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG14); > + val &= ~T22_PHYREG14_SSC_CNT_MASK; > + val |= T22_PHYREG14_SSC_CNT_VALUE << T22_PHYREG14_SSC_CNT_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG14); > + writel(T22_PHYREG15_SSC_CNT_VALUE, priv->mmio + RK3568_T22_PHYREG15); > + } > + break; > + case REF_CLOCK_25MHz: > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_25m, true); > + break; > + case REF_CLOCK_100MHz: > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_100m, true); > + if (priv->mode == PHY_TYPE_PCIE) { > + /* PLL KVCO fine tuning. */ > + val = readl(priv->mmio + RK3568_T22_PHYREG32); > + val &= ~T22_PHYREG32_PLL_KVCO_MASK; > + val |= T22_PHYREG32_PLL_KVCO_VALUE << T22_PHYREG32_PLL_KVCO_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG32); > + > + /* Enable controlling random jitter. */ > + writel(T22_PHYREG11_PLL_LPF_ADJ, priv->mmio + RK3568_T22_PHYREG11); > + > + val = readl(priv->mmio + RK3568_T22_PHYREG5); > + val &= ~T22_PHYREG5_PLL_DIV_MASK; > + val |= T22_PHYREG5_PLL_DIV_2 << T22_PHYREG5_PLL_DIV_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG5); > + > + writel(T22_PHYREG17_PLL_LOOP, priv->mmio + RK3568_T22_PHYREG17); > + writel(T22_PHYREG10_SU_TRIM_0_7, priv->mmio + RK3568_T22_PHYREG10); > + } else if (priv->mode == PHY_TYPE_SATA) { > + /* downward spread spectrum +500ppm */ > + val = readl(priv->mmio + RK3568_T22_PHYREG31); > + val &= ~T22_PHYREG31_SSC_MASK; > + val |= T22_PHYREG31_SSC_DOWNWARD << T22_PHYREG31_SSC_DIR_SHIFT; > + val |= T22_PHYREG31_SSC_OFFSET_500PPM << T22_PHYREG31_SSC_OFFSET_SHIFT; > + writel(val, priv->mmio + RK3568_T22_PHYREG31); > + } > + break; > + default: > + dev_err(priv->dev, "unsupported rate: %lu\n", rate); > + return -EINVAL; > + } > + > + if (priv->ext_refclk) { > + rockchip_combphy_param_write(priv->phy_grf, &cfg->pipe_clk_ext, true); > + if (priv->mode == PHY_TYPE_PCIE && rate == REF_CLOCK_100MHz) { > + val = readl(priv->mmio + RK3568_T22_PHYREG12); > + val &= ~T22_PHYREG12_RESISTER_MASK; > + val |= T22_PHYREG12_RESISTER_HIGH_Z << T22_PHYREG12_RESISTER_SHIFT; > + val |= T22_PHYREG12_CKRCV_AMP0; > + writel(val, priv->mmio + RK3568_T22_PHYREG12); > + > + val = readl(priv->mmio + RK3568_T22_PHYREG13); > + val |= T22_PHYREG13_CKRCV_AMP1; > + writel(val, priv->mmio + RK3568_T22_PHYREG13); > + } > + } > + > + if (priv->enable_ssc) { > + val = readl(priv->mmio + RK3568_T22_PHYREG7); > + val |= T22_PHYREG7_SSC_EN; > + writel(val, priv->mmio + RK3568_T22_PHYREG7); > + } > + > + return 0; > +} > + > +static const struct rockchip_combphy_grfcfg rk3568_combphy_grfcfgs = { > + /* pipe-phy-grf */ > + .pcie_mode_set = { 0x0000, 5, 0, 0x00, 0x11 }, > + .usb_mode_set = { 0x0000, 5, 0, 0x00, 0x04 }, > + .sgmii_mode_set = { 0x0000, 5, 0, 0x00, 0x01 }, > + .qsgmii_mode_set = { 0x0000, 5, 0, 0x00, 0x21 }, > + .pipe_rxterm_set = { 0x0000, 12, 12, 0x00, 0x01 }, > + .pipe_txelec_set = { 0x0004, 1, 1, 0x00, 0x01 }, > + .pipe_txcomp_set = { 0x0004, 4, 4, 0x00, 0x01 }, > + .pipe_clk_25m = { 0x0004, 14, 13, 0x00, 0x01 }, > + .pipe_clk_100m = { 0x0004, 14, 13, 0x00, 0x02 }, > + .pipe_phymode_sel = { 0x0008, 1, 1, 0x00, 0x01 }, > + .pipe_rate_sel = { 0x0008, 2, 2, 0x00, 0x01 }, > + .pipe_rxterm_sel = { 0x0008, 8, 8, 0x00, 0x01 }, > + .pipe_txelec_sel = { 0x0008, 12, 12, 0x00, 0x01 }, > + .pipe_txcomp_sel = { 0x0008, 15, 15, 0x00, 0x01 }, > + .pipe_clk_ext = { 0x000c, 9, 8, 0x02, 0x01 }, > + .pipe_sel_usb = { 0x000c, 14, 13, 0x00, 0x01 }, > + .pipe_sel_qsgmii = { 0x000c, 15, 13, 0x00, 0x07 }, > + .pipe_phy_status = { 0x0034, 6, 6, 0x01, 0x00 }, > + .con0_for_pcie = { 0x0000, 15, 0, 0x00, 0x1000 }, > + .con1_for_pcie = { 0x0004, 15, 0, 0x00, 0x0000 }, > + .con2_for_pcie = { 0x0008, 15, 0, 0x00, 0x0101 }, > + .con3_for_pcie = { 0x000c, 15, 0, 0x00, 0x0200 }, > + .con0_for_sata = { 0x0000, 15, 0, 0x00, 0x0119 }, > + .con1_for_sata = { 0x0004, 15, 0, 0x00, 0x0040 }, > + .con2_for_sata = { 0x0008, 15, 0, 0x00, 0x80c3 }, > + .con3_for_sata = { 0x000c, 15, 0, 0x00, 0x4407 }, > + /* pipe-grf */ > + .pipe_con0_for_sata = { 0x0000, 15, 0, 0x00, 0x2220 }, > + .pipe_sgmii_mac_sel = { 0x0040, 1, 1, 0x00, 0x01 }, > + .pipe_xpcs_phy_ready = { 0x0040, 2, 2, 0x00, 0x01 }, > + .u3otg0_port_en = { 0x0104, 15, 0, 0x0181, 0x1100 }, > + .u3otg1_port_en = { 0x0144, 15, 0, 0x0181, 0x1100 }, > +}; > + > +static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = { > + .grfcfg = &rk3568_combphy_grfcfgs, > + .combphy_cfg = rk3568_combphy_cfg, > +}; > + > +static const struct of_device_id rockchip_combphy_of_match[] = { > + { > + .compatible = "rockchip,rk3568-naneng-combphy", > + .data = &rk3568_combphy_cfgs, > + }, > + { }, > +}; > +MODULE_DEVICE_TABLE(of, rockchip_combphy_of_match); > + > +static struct platform_driver rockchip_combphy_driver = { > + .probe = rockchip_combphy_probe, > + .driver = { > + .name = "rockchip-naneng-combphy", > + .of_match_table = rockchip_combphy_of_match, > + }, > +}; > +module_platform_driver(rockchip_combphy_driver); > + > +MODULE_DESCRIPTION("Rockchip NANENG COMBPHY driver"); > +MODULE_LICENSE("GPL v2"); > -- > 2.20.1 -- ~Vinod