From patchwork Mon May 14 09:53:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: huang lin X-Patchwork-Id: 10397825 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5B776601E7 for ; Mon, 14 May 2018 10:11:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 471FC290CB for ; Mon, 14 May 2018 10:11:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3B2D6290CD; Mon, 14 May 2018 10:11:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 45D0D290CB for ; Mon, 14 May 2018 10:11:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=8y07NHcyqRM8q3YnXpp53ydUmauafFSb/kVnRckXz7k=; b=F6iJoFZNOcqa8MFflC27fdsS9H PG46EXGt3VS69E9xC6WtTXS7OlqSkbdm51I70BD6o4WGLKGViwjjLc5uOHTPMuLW6tdsbz85kPv/I 3w05eblf95VL7VjRve/gitkRWCruoa+QLzJ0zCHmO8YvVZWZTc5bfhYn2/7QFEEKqTyxvqsLHmjty eOee2SCijkiiNJBFSIsWmMWYQ/4pGOPM/kswCQ7Y8Cq0pwlfBViY5f6yspymrcXfcRf4Q+1B9JlQM dawVXf7ntzmjIkEaZBI3k0ZP3+X+l1MAgjcZk0fjssjkuII+uPaFncfe6l48/e2FoUoV4aKXoxmEa GBknQMnQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fIARv-0007eH-6l; Mon, 14 May 2018 10:11:23 +0000 Received: from mail-pg0-f66.google.com ([74.125.83.66]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fIABh-000853-Vn; Mon, 14 May 2018 09:54:59 +0000 Received: by mail-pg0-f66.google.com with SMTP id z4-v6so5252668pgu.13; Mon, 14 May 2018 02:54:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=FSLY8WjbWkkAxU1jw/gUtZMJDV9cp9dh2up6NQe9gCM=; b=h7v9HQRnGoXTVsODefRlPYNzZrJ95+y7zx309vMOtVFhhiMJGAPayqq4BoGzkicw9T 9UPx/OlPh3RwAgfvf2IczVrHvhb8PZ6jburcnLPpPNTxCpp/WBKigl++2cy14y5Z5eQT Odes3MzEzEm0v7hIRAxrT8MMN9GoOr3JHXzrPJRQE8T1JTzq4EIolmBYPwtRLsaGr6b5 SU21nG94vVXgCnFQSuhqa6EV++SSD3b3sBFSrDAop2WFrh1jDGJHVS5lFerZ2W9eX1yA pOAl/LCxrYGTlPDBeY7OLLx3TiX1SZlkhfJIO5Aau03cNj3/BktqQg4kbT/B/WIawaEo zwjQ== X-Gm-Message-State: ALKqPwc2/kgHCNiLGYNqI94I6IMKzke5k9WEsrkGJvhXVvTXuj2uM+CY ebybGEnodJaRqOMx+hdArf8= X-Google-Smtp-Source: AB8JxZqMjP7SIlZmebKiEnFcPt0hdmDPkJ8I+E71CozC1XzZN9xLQuHjgH8h8B9frcxCei+kwgMovw== X-Received: by 2002:a62:230b:: with SMTP id j11-v6mr9688512pfj.177.1526291666321; Mon, 14 May 2018 02:54:26 -0700 (PDT) Received: from localhost.localdomain ([103.29.142.67]) by smtp.gmail.com with ESMTPSA id u19-v6sm12692574pgv.25.2018.05.14.02.54.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 14 May 2018 02:54:25 -0700 (PDT) From: Lin Huang To: seanpaul@chromium.org, airlied@linux.ie, zyw@rock-chips.com Subject: [PATCH v3 3/4] phy: rockchip-typec: support variable phy config value Date: Mon, 14 May 2018 17:53:54 +0800 Message-Id: <1526291635-31122-3-git-send-email-hl@rock-chips.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1526291635-31122-1-git-send-email-hl@rock-chips.com> References: <1526291635-31122-1-git-send-email-hl@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180514_025438_147800_4AFD7539 X-CRM114-Status: GOOD ( 20.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, heiko@sntech.de, eballetbo@gmail.com, briannorris@chromium.org, dianders@chromium.org, jani.nikula@linux.intel.com, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, robh+dt@kernel.org, dri-devel@lists.freedesktop.org, daniel.vetter@intel.com, linux-arm-kernel@lists.infradead.org, Lin Huang MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP the phy config values used to fix in dp firmware, but some boards need change these values to do training and get the better eye diagram result. So support that in phy driver. Signed-off-by: Chris Zhong Signed-off-by: Lin Huang --- Changes in v2: - update patch following Enric suggest Changes in v3: - delete need_software_training variable - add default phy config value, if dts do not define phy config value, use these value drivers/phy/rockchip/phy-rockchip-typec.c | 305 ++++++++++++++++++++---------- include/soc/rockchip/rockchip_phy_typec.h | 63 ++++++ 2 files changed, 270 insertions(+), 98 deletions(-) create mode 100644 include/soc/rockchip/rockchip_phy_typec.h diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index 76a4b58..10253ad 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -63,6 +63,7 @@ #include #include +#include #define CMN_SSM_BANDGAP (0x21 << 2) #define CMN_SSM_BIAS (0x22 << 2) @@ -323,21 +324,29 @@ * clock 0: PLL 0 div 1 * clock 1: PLL 1 div 2 */ -#define CLK_PLL_CONFIG 0X30 +#define CLK_PLL1_DIV1 0x20 +#define CLK_PLL1_DIV2 0x30 #define CLK_PLL_MASK 0x33 #define CMN_READY BIT(0) +#define DP_PLL_CLOCK_ENABLE_ACK BIT(3) #define DP_PLL_CLOCK_ENABLE BIT(2) +#define DP_PLL_ENABLE_ACK BIT(1) #define DP_PLL_ENABLE BIT(0) #define DP_PLL_DATA_RATE_RBR ((2 << 12) | (4 << 8)) #define DP_PLL_DATA_RATE_HBR ((2 << 12) | (4 << 8)) #define DP_PLL_DATA_RATE_HBR2 ((1 << 12) | (2 << 8)) +#define DP_PLL_DATA_RATE_MASK 0xff00 -#define DP_MODE_A0 BIT(4) -#define DP_MODE_A2 BIT(6) -#define DP_MODE_ENTER_A0 0xc101 -#define DP_MODE_ENTER_A2 0xc104 +#define DP_MODE_MASK 0xf +#define DP_MODE_ENTER_A0 BIT(0) +#define DP_MODE_ENTER_A2 BIT(2) +#define DP_MODE_ENTER_A3 BIT(3) +#define DP_MODE_A0_ACK BIT(4) +#define DP_MODE_A2_ACK BIT(6) +#define DP_MODE_A3_ACK BIT(7) +#define DP_LINK_RESET_DEASSERTED BIT(8) #define PHY_MODE_SET_TIMEOUT 100000 @@ -349,51 +358,7 @@ #define MODE_DFP_USB BIT(1) #define MODE_DFP_DP BIT(2) -struct usb3phy_reg { - u32 offset; - u32 enable_bit; - u32 write_enable; -}; - -/** - * struct rockchip_usb3phy_port_cfg: usb3-phy port configuration. - * @reg: the base address for usb3-phy config. - * @typec_conn_dir: the register of type-c connector direction. - * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable. - * @external_psm: the register of type-c phy external psm clock. - * @pipe_status: the register of type-c phy pipe status. - * @usb3_host_disable: the register of type-c usb3 host disable. - * @usb3_host_port: the register of type-c usb3 host port. - * @uphy_dp_sel: the register of type-c phy DP select control. - */ -struct rockchip_usb3phy_port_cfg { - unsigned int reg; - struct usb3phy_reg typec_conn_dir; - struct usb3phy_reg usb3tousb2_en; - struct usb3phy_reg external_psm; - struct usb3phy_reg pipe_status; - struct usb3phy_reg usb3_host_disable; - struct usb3phy_reg usb3_host_port; - struct usb3phy_reg uphy_dp_sel; -}; - -struct rockchip_typec_phy { - struct device *dev; - void __iomem *base; - struct extcon_dev *extcon; - struct regmap *grf_regs; - struct clk *clk_core; - struct clk *clk_ref; - struct reset_control *uphy_rst; - struct reset_control *pipe_rst; - struct reset_control *tcphy_rst; - const struct rockchip_usb3phy_port_cfg *port_cfgs; - /* mutex to protect access to individual PHYs */ - struct mutex lock; - - bool flip; - u8 mode; -}; +#define DP_DEFAULT_RATE 162000 struct phy_reg { u16 value; @@ -417,15 +382,15 @@ struct phy_reg usb3_pll_cfg[] = { { 0x8, CMN_DIAG_PLL0_LF_PROG }, }; -struct phy_reg dp_pll_cfg[] = { +struct phy_reg dp_pll_rbr_cfg[] = { { 0xf0, CMN_PLL1_VCOCAL_INIT }, { 0x18, CMN_PLL1_VCOCAL_ITER }, { 0x30b9, CMN_PLL1_VCOCAL_START }, - { 0x21c, CMN_PLL1_INTDIV }, + { 0x87, CMN_PLL1_INTDIV }, { 0, CMN_PLL1_FRACDIV }, - { 0x5, CMN_PLL1_HIGH_THR }, - { 0x35, CMN_PLL1_SS_CTRL1 }, - { 0x7f1e, CMN_PLL1_SS_CTRL2 }, + { 0x22, CMN_PLL1_HIGH_THR }, + { 0x8000, CMN_PLL1_SS_CTRL1 }, + { 0, CMN_PLL1_SS_CTRL2 }, { 0x20, CMN_PLL1_DSM_DIAG }, { 0, CMN_PLLSM1_USER_DEF_CTRL }, { 0, CMN_DIAG_PLL1_OVRD }, @@ -436,9 +401,52 @@ struct phy_reg dp_pll_cfg[] = { { 0x8, CMN_DIAG_PLL1_LF_PROG }, { 0x100, CMN_DIAG_PLL1_PTATIS_TUNE1 }, { 0x7, CMN_DIAG_PLL1_PTATIS_TUNE2 }, - { 0x4, CMN_DIAG_PLL1_INCLK_CTRL }, + { 0x1, CMN_DIAG_PLL1_INCLK_CTRL }, +}; + +struct phy_reg dp_pll_hbr_cfg[] = { + { 0xf0, CMN_PLL1_VCOCAL_INIT }, + { 0x18, CMN_PLL1_VCOCAL_ITER }, + { 0x30b4, CMN_PLL1_VCOCAL_START }, + { 0xe1, CMN_PLL1_INTDIV }, + { 0, CMN_PLL1_FRACDIV }, + { 0x5, CMN_PLL1_HIGH_THR }, + { 0x8000, CMN_PLL1_SS_CTRL1 }, + { 0, CMN_PLL1_SS_CTRL2 }, + { 0x20, CMN_PLL1_DSM_DIAG }, + { 0x1000, CMN_PLLSM1_USER_DEF_CTRL }, + { 0, CMN_DIAG_PLL1_OVRD }, + { 0, CMN_DIAG_PLL1_FBH_OVRD }, + { 0, CMN_DIAG_PLL1_FBL_OVRD }, + { 0x7, CMN_DIAG_PLL1_V2I_TUNE }, + { 0x45, CMN_DIAG_PLL1_CP_TUNE }, + { 0x8, CMN_DIAG_PLL1_LF_PROG }, + { 0x1, CMN_DIAG_PLL1_PTATIS_TUNE1 }, + { 0x1, CMN_DIAG_PLL1_PTATIS_TUNE2 }, + { 0x1, CMN_DIAG_PLL1_INCLK_CTRL }, }; +struct phy_reg dp_pll_hbr2_cfg[] = { + { 0xf0, CMN_PLL1_VCOCAL_INIT }, + { 0x18, CMN_PLL1_VCOCAL_ITER }, + { 0x30b4, CMN_PLL1_VCOCAL_START }, + { 0xe1, CMN_PLL1_INTDIV }, + { 0, CMN_PLL1_FRACDIV }, + { 0x5, CMN_PLL1_HIGH_THR }, + { 0x8000, CMN_PLL1_SS_CTRL1 }, + { 0, CMN_PLL1_SS_CTRL2 }, + { 0x20, CMN_PLL1_DSM_DIAG }, + { 0x1000, CMN_PLLSM1_USER_DEF_CTRL }, + { 0, CMN_DIAG_PLL1_OVRD }, + { 0, CMN_DIAG_PLL1_FBH_OVRD }, + { 0, CMN_DIAG_PLL1_FBL_OVRD }, + { 0x7, CMN_DIAG_PLL1_V2I_TUNE }, + { 0x45, CMN_DIAG_PLL1_CP_TUNE }, + { 0x8, CMN_DIAG_PLL1_LF_PROG }, + { 0x1, CMN_DIAG_PLL1_PTATIS_TUNE1 }, + { 0x1, CMN_DIAG_PLL1_PTATIS_TUNE2 }, + { 0x1, CMN_DIAG_PLL1_INCLK_CTRL }, +}; static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { { .reg = 0xff7c0000, @@ -463,6 +471,24 @@ static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = { { /* sentinel */ } }; +/* default phy config */ +struct phy_config configs[3][4] = { + {{ 0x2a, 0x00 }, + { 0x1f, 0x15 }, + { 0x14, 0x22 }, + { 0x02, 0x2b } }, + + {{ 0x21, 0x00 }, + { 0x12, 0x15 }, + { 0x02, 0x22 }, + { 0, 0 } }, + + {{ 0x15, 0x00 }, + { 0x00, 0x15 }, + { 0, 0 }, + { 0, 0 } }, +}; + static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy) { u32 i, rdata; @@ -484,7 +510,7 @@ static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy) rdata = readl(tcphy->base + CMN_DIAG_HSCLK_SEL); rdata &= ~CLK_PLL_MASK; - rdata |= CLK_PLL_CONFIG; + rdata |= CLK_PLL1_DIV2; writel(rdata, tcphy->base + CMN_DIAG_HSCLK_SEL); } @@ -498,17 +524,44 @@ static void tcphy_cfg_usb3_pll(struct rockchip_typec_phy *tcphy) tcphy->base + usb3_pll_cfg[i].addr); } -static void tcphy_cfg_dp_pll(struct rockchip_typec_phy *tcphy) +static void tcphy_cfg_dp_pll(struct rockchip_typec_phy *tcphy, int link_rate) { - u32 i; + struct phy_reg *phy_cfg; + u32 clk_ctrl; + u32 i, cfg_size, hsclk_sel; + + hsclk_sel = readl(tcphy->base + CMN_DIAG_HSCLK_SEL); + hsclk_sel &= ~CLK_PLL_MASK; + + switch (link_rate) { + case 162000: + clk_ctrl = DP_PLL_DATA_RATE_RBR; + hsclk_sel |= CLK_PLL1_DIV2; + phy_cfg = dp_pll_rbr_cfg; + cfg_size = ARRAY_SIZE(dp_pll_rbr_cfg); + break; + case 270000: + clk_ctrl = DP_PLL_DATA_RATE_HBR; + hsclk_sel |= CLK_PLL1_DIV2; + phy_cfg = dp_pll_hbr_cfg; + cfg_size = ARRAY_SIZE(dp_pll_hbr_cfg); + break; + case 540000: + clk_ctrl = DP_PLL_DATA_RATE_HBR2; + hsclk_sel |= CLK_PLL1_DIV1; + phy_cfg = dp_pll_hbr2_cfg; + cfg_size = ARRAY_SIZE(dp_pll_hbr2_cfg); + break; + } + + clk_ctrl |= DP_PLL_CLOCK_ENABLE | DP_PLL_ENABLE; + writel(clk_ctrl, tcphy->base + DP_CLK_CTL); - /* set the default mode to RBR */ - writel(DP_PLL_CLOCK_ENABLE | DP_PLL_ENABLE | DP_PLL_DATA_RATE_RBR, - tcphy->base + DP_CLK_CTL); + writel(hsclk_sel, tcphy->base + CMN_DIAG_HSCLK_SEL); /* load the configuration of PLL1 */ - for (i = 0; i < ARRAY_SIZE(dp_pll_cfg); i++) - writel(dp_pll_cfg[i].value, tcphy->base + dp_pll_cfg[i].addr); + for (i = 0; i < cfg_size; i++) + writel(phy_cfg[i].value, tcphy->base + phy_cfg[i].addr); } static void tcphy_tx_usb3_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane) @@ -535,9 +588,10 @@ static void tcphy_rx_usb3_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane) writel(0xfb, tcphy->base + XCVR_DIAG_BIDI_CTRL(lane)); } -static void tcphy_dp_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane) +static void tcphy_dp_cfg_lane(struct rockchip_typec_phy *tcphy, int link_rate, + u8 swing, u8 pre_emp, u32 lane) { - u16 rdata; + u16 val; writel(0xbefc, tcphy->base + XCVR_PSM_RCTRL(lane)); writel(0x6799, tcphy->base + TX_PSC_A0(lane)); @@ -545,25 +599,31 @@ static void tcphy_dp_cfg_lane(struct rockchip_typec_phy *tcphy, u32 lane) writel(0x98, tcphy->base + TX_PSC_A2(lane)); writel(0x98, tcphy->base + TX_PSC_A3(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_000(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_001(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_010(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_011(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_100(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_101(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_110(lane)); - writel(0, tcphy->base + TX_TXCC_MGNFS_MULT_111(lane)); - writel(0, tcphy->base + TX_TXCC_CPOST_MULT_10(lane)); - writel(0, tcphy->base + TX_TXCC_CPOST_MULT_01(lane)); - writel(0, tcphy->base + TX_TXCC_CPOST_MULT_00(lane)); - writel(0, tcphy->base + TX_TXCC_CPOST_MULT_11(lane)); - - writel(0x128, tcphy->base + TX_TXCC_CAL_SCLR_MULT(lane)); - writel(0x400, tcphy->base + TX_DIAG_TX_DRV(lane)); - - rdata = readl(tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane)); - rdata = (rdata & 0x8fff) | 0x6000; - writel(rdata, tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane)); + writel(tcphy->config[swing][pre_emp].swing, + tcphy->base + TX_TXCC_MGNFS_MULT_000(lane)); + writel(tcphy->config[swing][pre_emp].pe, + tcphy->base + TX_TXCC_CPOST_MULT_00(lane)); + + if (swing == 2 && pre_emp == 0 && link_rate != 540000) { + writel(0x700, tcphy->base + TX_DIAG_TX_DRV(lane)); + writel(0x13c, tcphy->base + TX_TXCC_CAL_SCLR_MULT(lane)); + } else { + writel(0x128, tcphy->base + TX_TXCC_CAL_SCLR_MULT(lane)); + writel(0x0400, tcphy->base + TX_DIAG_TX_DRV(lane)); + } + + val = readl(tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane)); + val = val & 0x8fff; + switch (link_rate) { + case 162000: + case 270000: + val |= (6 << 12); + break; + case 540000: + val |= (4 << 12); + break; + } + writel(val, tcphy->base + XCVR_DIAG_PLLDRC_CTRL(lane)); } static inline int property_enable(struct rockchip_typec_phy *tcphy, @@ -754,30 +814,33 @@ static int tcphy_phy_init(struct rockchip_typec_phy *tcphy, u8 mode) tcphy_cfg_24m(tcphy); if (mode == MODE_DFP_DP) { - tcphy_cfg_dp_pll(tcphy); + tcphy_cfg_dp_pll(tcphy, DP_DEFAULT_RATE); for (i = 0; i < 4; i++) - tcphy_dp_cfg_lane(tcphy, i); + tcphy_dp_cfg_lane(tcphy, DP_DEFAULT_RATE, 0, 0, i); writel(PIN_ASSIGN_C_E, tcphy->base + PMA_LANE_CFG); } else { tcphy_cfg_usb3_pll(tcphy); - tcphy_cfg_dp_pll(tcphy); + tcphy_cfg_dp_pll(tcphy, DP_DEFAULT_RATE); if (tcphy->flip) { tcphy_tx_usb3_cfg_lane(tcphy, 3); tcphy_rx_usb3_cfg_lane(tcphy, 2); - tcphy_dp_cfg_lane(tcphy, 0); - tcphy_dp_cfg_lane(tcphy, 1); + tcphy_dp_cfg_lane(tcphy, DP_DEFAULT_RATE, 0, 0, 0); + tcphy_dp_cfg_lane(tcphy, DP_DEFAULT_RATE, 0, 0, 1); } else { tcphy_tx_usb3_cfg_lane(tcphy, 0); tcphy_rx_usb3_cfg_lane(tcphy, 1); - tcphy_dp_cfg_lane(tcphy, 2); - tcphy_dp_cfg_lane(tcphy, 3); + tcphy_dp_cfg_lane(tcphy, DP_DEFAULT_RATE, 0, 0, 2); + tcphy_dp_cfg_lane(tcphy, DP_DEFAULT_RATE, 0, 0, 3); } writel(PIN_ASSIGN_D_F, tcphy->base + PMA_LANE_CFG); } - writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL); + val = readl(tcphy->base + DP_MODE_CTL); + val &= ~DP_MODE_MASK; + val |= DP_MODE_ENTER_A2 | DP_LINK_RESET_DEASSERTED; + writel(val, tcphy->base + DP_MODE_CTL); reset_control_deassert(tcphy->uphy_rst); @@ -990,7 +1053,7 @@ static int rockchip_dp_phy_power_on(struct phy *phy) property_enable(tcphy, &cfg->uphy_dp_sel, 1); ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL, - val, val & DP_MODE_A2, 1000, + val, val & DP_MODE_A2_ACK, 1000, PHY_MODE_SET_TIMEOUT); if (ret < 0) { dev_err(tcphy->dev, "failed to wait TCPHY enter A2\n"); @@ -999,13 +1062,19 @@ static int rockchip_dp_phy_power_on(struct phy *phy) tcphy_dp_aux_calibration(tcphy); - writel(DP_MODE_ENTER_A0, tcphy->base + DP_MODE_CTL); + /* enter A0 mode */ + val = readl(tcphy->base + DP_MODE_CTL); + val &= ~DP_MODE_MASK; + val |= DP_MODE_ENTER_A0; + writel(val, tcphy->base + DP_MODE_CTL); ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL, - val, val & DP_MODE_A0, 1000, + val, val & DP_MODE_A0_ACK, 1000, PHY_MODE_SET_TIMEOUT); if (ret < 0) { - writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL); + val &= ~DP_MODE_MASK; + val |= DP_MODE_ENTER_A2; + writel(val, tcphy->base + DP_MODE_CTL); dev_err(tcphy->dev, "failed to wait TCPHY enter A0\n"); goto power_on_finish; } @@ -1023,6 +1092,7 @@ static int rockchip_dp_phy_power_on(struct phy *phy) static int rockchip_dp_phy_power_off(struct phy *phy) { struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); + u32 val; mutex_lock(&tcphy->lock); @@ -1031,7 +1101,10 @@ static int rockchip_dp_phy_power_off(struct phy *phy) tcphy->mode &= ~MODE_DFP_DP; - writel(DP_MODE_ENTER_A2, tcphy->base + DP_MODE_CTL); + val = readl(tcphy->base + DP_MODE_CTL); + val &= ~DP_MODE_MASK; + val |= DP_MODE_ENTER_A2; + writel(val, tcphy->base + DP_MODE_CTL); if (tcphy->mode == MODE_DISCONNECT) tcphy_phy_deinit(tcphy); @@ -1047,9 +1120,35 @@ static const struct phy_ops rockchip_dp_phy_ops = { .owner = THIS_MODULE, }; +static int typec_dp_phy_config(struct phy *phy, int link_rate, + int lanes, u8 swing, u8 pre_emp) +{ + struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy); + u8 i; + + tcphy_cfg_dp_pll(tcphy, link_rate); + + if (tcphy->mode == MODE_DFP_DP) { + for (i = 0; i < 4; i++) + tcphy_dp_cfg_lane(tcphy, link_rate, swing, pre_emp, i); + } else { + if (tcphy->flip) { + tcphy_dp_cfg_lane(tcphy, link_rate, swing, pre_emp, 0); + tcphy_dp_cfg_lane(tcphy, link_rate, swing, pre_emp, 1); + } else { + tcphy_dp_cfg_lane(tcphy, link_rate, swing, pre_emp, 2); + tcphy_dp_cfg_lane(tcphy, link_rate, swing, pre_emp, 3); + } + } + + return 0; +} + static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy, struct device *dev) { + int ret; + tcphy->grf_regs = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf"); if (IS_ERR(tcphy->grf_regs)) { @@ -1087,6 +1186,15 @@ static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy, return PTR_ERR(tcphy->tcphy_rst); } + /* + * check if phy_config pass from dts, if no, + * use default phy config value. + */ + ret = of_property_read_u32_array(dev->of_node, "rockchip,phy_config", + (u32 *)tcphy->config, sizeof(tcphy->config) / sizeof(u32)); + if (ret) + memcpy(tcphy->config, configs, sizeof(tcphy->config)); + return 0; } @@ -1171,6 +1279,7 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev) } } + tcphy->typec_phy_config = typec_dp_phy_config; pm_runtime_enable(dev); for_each_available_child_of_node(np, child_np) { diff --git a/include/soc/rockchip/rockchip_phy_typec.h b/include/soc/rockchip/rockchip_phy_typec.h new file mode 100644 index 0000000..be6af0e --- /dev/null +++ b/include/soc/rockchip/rockchip_phy_typec.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd + * Author: Lin Huang + */ + +#ifndef __SOC_ROCKCHIP_PHY_TYPEC_H +#define __SOC_ROCKCHIP_PHY_TYPEC_H + +struct usb3phy_reg { + u32 offset; + u32 enable_bit; + u32 write_enable; +}; + +/** + * struct rockchip_usb3phy_port_cfg: usb3-phy port configuration. + * @reg: the base address for usb3-phy config. + * @typec_conn_dir: the register of type-c connector direction. + * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable. + * @external_psm: the register of type-c phy external psm clock. + * @pipe_status: the register of type-c phy pipe status. + * @usb3_host_disable: the register of type-c usb3 host disable. + * @usb3_host_port: the register of type-c usb3 host port. + * @uphy_dp_sel: the register of type-c phy DP select control. + */ +struct rockchip_usb3phy_port_cfg { + unsigned int reg; + struct usb3phy_reg typec_conn_dir; + struct usb3phy_reg usb3tousb2_en; + struct usb3phy_reg external_psm; + struct usb3phy_reg pipe_status; + struct usb3phy_reg usb3_host_disable; + struct usb3phy_reg usb3_host_port; + struct usb3phy_reg uphy_dp_sel; +}; + +struct phy_config { + int swing; + int pe; +}; + +struct rockchip_typec_phy { + struct device *dev; + void __iomem *base; + struct extcon_dev *extcon; + struct regmap *grf_regs; + struct clk *clk_core; + struct clk *clk_ref; + struct reset_control *uphy_rst; + struct reset_control *pipe_rst; + struct reset_control *tcphy_rst; + const struct rockchip_usb3phy_port_cfg *port_cfgs; + /* mutex to protect access to individual PHYs */ + struct mutex lock; + struct phy_config config[3][4]; + bool flip; + u8 mode; + int (*typec_phy_config)(struct phy *phy, int link_rate, + int lanes, u8 swing, u8 pre_emp); +}; + +#endif