From patchwork Fri Mar 10 08:05:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Tanure X-Patchwork-Id: 13168853 X-Patchwork-Delegate: kw@linux.com 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 92934C64EC4 for ; Fri, 10 Mar 2023 08:05:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229817AbjCJIFy (ORCPT ); Fri, 10 Mar 2023 03:05:54 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230155AbjCJIFr (ORCPT ); Fri, 10 Mar 2023 03:05:47 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D164B718B; Fri, 10 Mar 2023 00:05:45 -0800 (PST) Received: from cryzen.lan (cpc87451-finc19-2-0-cust61.4-2.cable.virginm.net [82.11.51.62]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: tanureal) by madras.collabora.co.uk (Postfix) with ESMTPSA id D95BB66030A1; Fri, 10 Mar 2023 08:05:43 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1678435544; bh=Ugt/cIk2aYivDAu6VNt7dUsTeai7krVEsAmcZ9e7wWs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CevpKLSirdoo2LRhQoamcTSJtt7F++p/wpiqgJW7eBklKIdW4EJ4vfYNY0kUZClX9 +YMt0O23e8kqR31xxPwcmoiFvvJXoIc9U/dugfsZhmhU4+RDxSARFdSC+s1tO8ai2n WsAfeDzQm+E/bbgdbS8v441+Mm0LGU5WnpGtGFRDOPVeE4jAsfA7yKtJm8bWlkKSPf VbB8Oq6kBpIQGe0gqCi1SYUzJO7HE/8Y2OCQxU64oj8TjCcVeyJCymwiEBb0gKrl7W qlO8JCZ0PM5V+j0xXwXmmDzCQk/87w4aAM9fzYmxij1wS3Rx1LsfFom03zQojeSx3/ 3JgO9x9VrouMA== From: Lucas Tanure To: Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Krzysztof Kozlowski , Heiko Stuebner , Thomas Gleixner , Marc Zyngier , Lorenzo Pieralisi , Krzysztof Wilczynski , Bjorn Helgaas Cc: Qu Wenruo , Piotr Oniszczuk , Peter Geis , Kever Yang , linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Lucas Tanure , kernel@collabora.com, Andrew Powers-Holmes Subject: [PATCH 4/7] phy: rockchip: Add naneng combo phy support for RK3588 Date: Fri, 10 Mar 2023 08:05:15 +0000 Message-Id: <20230310080518.78054-5-lucas.tanure@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230310080518.78054-1-lucas.tanure@collabora.com> References: <20230310080518.78054-1-lucas.tanure@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Add support for RK3588 combo phy This is based on prior work from XiaoDong Huang and Peter Geis fixing this issue specifically for Rockchip 356x. Co-developed-by: Andrew Powers-Holmes Signed-off-by: Andrew Powers-Holmes Signed-off-by: Lucas Tanure --- .../rockchip/phy-rockchip-naneng-combphy.c | 184 ++++++++++++++++++ 1 file changed, 184 insertions(+) diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c index 7b213825fb5d..7b8b001e4f9e 100644 --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c @@ -63,6 +63,9 @@ #define PHYREG18 0x44 #define PHYREG18_PLL_LOOP 0x32 +#define PHYREG27 0x6C +#define PHYREG27_RX_TRIM_RK3588 0x4C + #define PHYREG32 0x7C #define PHYREG32_SSC_MASK GENMASK(7, 4) #define PHYREG32_SSC_DIR_SHIFT 4 @@ -114,7 +117,10 @@ struct rockchip_combphy_grfcfg { struct combphy_reg con2_for_sata; struct combphy_reg con3_for_sata; struct combphy_reg pipe_con0_for_sata; + struct combphy_reg pipe_con1_for_sata; struct combphy_reg pipe_xpcs_phy_ready; + struct combphy_reg pipe_pcie1l0_sel; + struct combphy_reg pipe_pcie1l1_sel; }; struct rockchip_combphy_cfg { @@ -559,11 +565,189 @@ static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = { .combphy_cfg = rk3568_combphy_cfg, }; +static int rk3588_combphy_cfg(struct rockchip_combphy_priv *priv) +{ + const struct rockchip_combphy_grfcfg *cfg = priv->cfg->grfcfg; + unsigned long rate; + u32 val; + + switch (priv->type) { + case PHY_TYPE_PCIE: + 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); + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_pcie1l0_sel, true); + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_pcie1l1_sel, true); + break; + case PHY_TYPE_USB3: + /* Set SSC downward spread spectrum */ + rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, + PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT, + PHYREG32); + + /* Enable adaptive CTLE for USB3.0 Rx. */ + val = readl(priv->mmio + PHYREG15); + val |= PHYREG15_CTLE_EN; + writel(val, priv->mmio + PHYREG15); + + /* Set PLL KVCO fine tuning signals. */ + rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK, + PHYREG33_PLL_KVCO_VALUE << PHYREG33_PLL_KVCO_SHIFT, + PHYREG33); + + /* Enable controlling random jitter. */ + writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12); + + /* Set PLL input clock divider 1/2. */ + rockchip_combphy_updatel(priv, PHYREG6_PLL_DIV_MASK, + PHYREG6_PLL_DIV_2 << PHYREG6_PLL_DIV_SHIFT, + PHYREG6); + + writel(PHYREG18_PLL_LOOP, priv->mmio + PHYREG18); + writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11); + + 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 + PHYREG15); + val |= PHYREG15_CTLE_EN; + writel(val, priv->mmio + PHYREG15); + /* + * Set tx_rterm=50ohm and rx_rterm=44ohm for SATA. + * 0: 60ohm, 8: 50ohm 15: 44ohm (by step abort 1ohm) + */ + val = PHYREG7_TX_RTERM_50OHM << PHYREG7_TX_RTERM_SHIFT; + val |= PHYREG7_RX_RTERM_44OHM << PHYREG7_RX_RTERM_SHIFT; + writel(val, priv->mmio + PHYREG7); + + 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); + rockchip_combphy_param_write(priv->pipe_grf, &cfg->pipe_con1_for_sata, true); + break; + case PHY_TYPE_SGMII: + case PHY_TYPE_QSGMII: + 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->type == PHY_TYPE_USB3 || priv->type == PHY_TYPE_SATA) { + /* Set ssc_cnt[9:0]=0101111101 & 31.5KHz. */ + val = PHYREG15_SSC_CNT_VALUE << PHYREG15_SSC_CNT_SHIFT; + rockchip_combphy_updatel(priv, PHYREG15_SSC_CNT_MASK, + val, PHYREG15); + + writel(PHYREG16_SSC_CNT_VALUE, priv->mmio + PHYREG16); + } + 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->type == PHY_TYPE_PCIE) { + /* PLL KVCO fine tuning. */ + val = 4 << PHYREG33_PLL_KVCO_SHIFT; + rockchip_combphy_updatel(priv, PHYREG33_PLL_KVCO_MASK, + val, PHYREG33); + + /* Enable controlling random jitter. */ + writel(PHYREG12_PLL_LPF_ADJ_VALUE, priv->mmio + PHYREG12); + + /* Set up rx_trim: PLL LPF C1 85pf R1 1.25kohm */ + writel(PHYREG27_RX_TRIM_RK3588, priv->mmio + PHYREG27); + + /* Set up su_trim: */ + writel(PHYREG11_SU_TRIM_0_7, priv->mmio + PHYREG11); + } else if (priv->type == PHY_TYPE_SATA) { + /* downward spread spectrum +500ppm */ + val = PHYREG32_SSC_DOWNWARD << PHYREG32_SSC_DIR_SHIFT; + val |= PHYREG32_SSC_OFFSET_500PPM << PHYREG32_SSC_OFFSET_SHIFT; + rockchip_combphy_updatel(priv, PHYREG32_SSC_MASK, val, PHYREG32); + } + 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->type == PHY_TYPE_PCIE && rate == REF_CLOCK_100MHz) { + val = PHYREG13_RESISTER_HIGH_Z << PHYREG13_RESISTER_SHIFT; + val |= PHYREG13_CKRCV_AMP0; + rockchip_combphy_updatel(priv, PHYREG13_RESISTER_MASK, val, PHYREG13); + + val = readl(priv->mmio + PHYREG14); + val |= PHYREG14_CKRCV_AMP1; + writel(val, priv->mmio + PHYREG14); + } + } + + if (priv->enable_ssc) { + val = readl(priv->mmio + PHYREG8); + val |= PHYREG8_SSC_EN; + writel(val, priv->mmio + PHYREG8); + } + + return 0; +} + +static const struct rockchip_combphy_grfcfg rk3588_combphy_grfcfgs = { + /* pipe-phy-grf */ + .pcie_mode_set = { 0x0000, 5, 0, 0x00, 0x11 }, + .usb_mode_set = { 0x0000, 5, 0, 0x00, 0x04 }, + .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_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_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, 0x0129 }, + .con1_for_sata = { 0x0004, 15, 0, 0x00, 0x0000 }, + .con2_for_sata = { 0x0008, 15, 0, 0x00, 0x80c1 }, + .con3_for_sata = { 0x000c, 15, 0, 0x00, 0x0407 }, + /* pipe-grf */ + .pipe_con0_for_sata = { 0x0000, 11, 5, 0x00, 0x22 }, + .pipe_con1_for_sata = { 0x0000, 2, 0, 0x00, 0x2 }, + .pipe_pcie1l0_sel = { 0x0100, 0, 0, 0x01, 0x0 }, + .pipe_pcie1l1_sel = { 0x0100, 1, 1, 0x01, 0x0 }, +}; + +static const struct rockchip_combphy_cfg rk3588_combphy_cfgs = { + .grfcfg = &rk3588_combphy_grfcfgs, + .combphy_cfg = rk3588_combphy_cfg, +}; + static const struct of_device_id rockchip_combphy_of_match[] = { { .compatible = "rockchip,rk3568-naneng-combphy", .data = &rk3568_combphy_cfgs, }, + { + .compatible = "rockchip,rk3588-naneng-combphy", + .data = &rk3588_combphy_cfgs, + }, { }, }; MODULE_DEVICE_TABLE(of, rockchip_combphy_of_match);