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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E62CFC433EF for ; Fri, 29 Oct 2021 10:39:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D055960234 for ; Fri, 29 Oct 2021 10:39:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231844AbhJ2Kln (ORCPT ); Fri, 29 Oct 2021 06:41:43 -0400 Received: from mx.socionext.com ([202.248.49.38]:58734 "EHLO mx.socionext.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231772AbhJ2Kll (ORCPT ); Fri, 29 Oct 2021 06:41:41 -0400 Received: from unknown (HELO kinkan2-ex.css.socionext.com) ([172.31.9.52]) by mx.socionext.com with ESMTP; 29 Oct 2021 19:39:11 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by kinkan2-ex.css.socionext.com (Postfix) with ESMTP id D9909203F6D9; Fri, 29 Oct 2021 19:39:11 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Fri, 29 Oct 2021 19:39:11 +0900 Received: from plum.e01.socionext.com (unknown [10.212.243.119]) by kinkan2.css.socionext.com (Postfix) with ESMTP id 841FDB62AC; Fri, 29 Oct 2021 19:39:11 +0900 (JST) From: Kunihiko Hayashi To: Vinod Koul , Kishon Vijay Abraham I , Rob Herring , Masami Hiramatsu Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kunihiko Hayashi Subject: [PATCH v3 6/8] phy: uniphier-pcie: Add dual-phy support for NX1 SoC Date: Fri, 29 Oct 2021 19:39:05 +0900 Message-Id: <1635503947-18250-7-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1635503947-18250-1-git-send-email-hayashi.kunihiko@socionext.com> References: <1635503947-18250-1-git-send-email-hayashi.kunihiko@socionext.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org NX1 SoC supports 2 lanes and has dual-phy. Should set appropriate configuration values to both PHY registers. Signed-off-by: Kunihiko Hayashi --- drivers/phy/socionext/phy-uniphier-pcie.c | 48 ++++++++++++++++++++++--------- 1 file changed, 34 insertions(+), 14 deletions(-) diff --git a/drivers/phy/socionext/phy-uniphier-pcie.c b/drivers/phy/socionext/phy-uniphier-pcie.c index 2bd8df619712..ebca296ef123 100644 --- a/drivers/phy/socionext/phy-uniphier-pcie.c +++ b/drivers/phy/socionext/phy-uniphier-pcie.c @@ -27,6 +27,7 @@ #define TESTI_DAT_MASK GENMASK(13, 6) #define TESTI_ADR_MASK GENMASK(5, 1) #define TESTI_WR_EN BIT(0) +#define TESTIO_PHY_SHIFT 16 #define PCL_PHY_TEST_O 0x2004 #define TESTO_DAT_MASK GENMASK(7, 0) @@ -65,43 +66,57 @@ struct uniphier_pciephy_priv { struct uniphier_pciephy_soc_data { bool is_legacy; + bool is_dual_phy; void (*set_phymode)(struct regmap *regmap); }; static void uniphier_pciephy_testio_write(struct uniphier_pciephy_priv *priv, - u32 data) + int id, u32 data) { + if (id) + data <<= TESTIO_PHY_SHIFT; + /* need to read TESTO twice after accessing TESTI */ writel(data, priv->base + PCL_PHY_TEST_I); readl(priv->base + PCL_PHY_TEST_O); readl(priv->base + PCL_PHY_TEST_O); } +static u32 uniphier_pciephy_testio_read(struct uniphier_pciephy_priv *priv, int id) +{ + u32 val = readl(priv->base + PCL_PHY_TEST_O); + + if (id) + val >>= TESTIO_PHY_SHIFT; + + return val & TESTO_DAT_MASK; +} + static void uniphier_pciephy_set_param(struct uniphier_pciephy_priv *priv, - u32 reg, u32 mask, u32 param) + int id, u32 reg, u32 mask, u32 param) { u32 val; /* read previous data */ val = FIELD_PREP(TESTI_DAT_MASK, 1); val |= FIELD_PREP(TESTI_ADR_MASK, reg); - uniphier_pciephy_testio_write(priv, val); - val = readl(priv->base + PCL_PHY_TEST_O) & TESTO_DAT_MASK; + uniphier_pciephy_testio_write(priv, id, val); + val = uniphier_pciephy_testio_read(priv, id); /* update value */ val &= ~mask; val |= mask & param; val = FIELD_PREP(TESTI_DAT_MASK, val); val |= FIELD_PREP(TESTI_ADR_MASK, reg); - uniphier_pciephy_testio_write(priv, val); - uniphier_pciephy_testio_write(priv, val | TESTI_WR_EN); - uniphier_pciephy_testio_write(priv, val); + uniphier_pciephy_testio_write(priv, id, val); + uniphier_pciephy_testio_write(priv, id, val | TESTI_WR_EN); + uniphier_pciephy_testio_write(priv, id, val); /* read current data as dummy */ val = FIELD_PREP(TESTI_DAT_MASK, 1); val |= FIELD_PREP(TESTI_ADR_MASK, reg); - uniphier_pciephy_testio_write(priv, val); - readl(priv->base + PCL_PHY_TEST_O); + uniphier_pciephy_testio_write(priv, id, val); + uniphier_pciephy_testio_read(priv, id); } static void uniphier_pciephy_assert(struct uniphier_pciephy_priv *priv) @@ -127,7 +142,7 @@ static int uniphier_pciephy_init(struct phy *phy) { struct uniphier_pciephy_priv *priv = phy_get_drvdata(phy); u32 val; - int ret; + int ret, id; ret = clk_prepare_enable(priv->clk); if (ret) @@ -155,14 +170,16 @@ static int uniphier_pciephy_init(struct phy *phy) if (priv->data->is_legacy) return 0; - uniphier_pciephy_set_param(priv, PCL_PHY_R00, + for (id = 0; id < (priv->data->is_dual_phy ? 2 : 1); id++) { + uniphier_pciephy_set_param(priv, id, PCL_PHY_R00, RX_EQ_ADJ_EN, RX_EQ_ADJ_EN); - uniphier_pciephy_set_param(priv, PCL_PHY_R06, RX_EQ_ADJ, + uniphier_pciephy_set_param(priv, id, PCL_PHY_R06, RX_EQ_ADJ, FIELD_PREP(RX_EQ_ADJ, RX_EQ_ADJ_VAL)); - uniphier_pciephy_set_param(priv, PCL_PHY_R26, VCO_CTRL, + uniphier_pciephy_set_param(priv, id, PCL_PHY_R26, VCO_CTRL, FIELD_PREP(VCO_CTRL, VCO_CTRL_INIT_VAL)); - uniphier_pciephy_set_param(priv, PCL_PHY_R28, VCOPLL_CLMP, + uniphier_pciephy_set_param(priv, id, PCL_PHY_R28, VCOPLL_CLMP, FIELD_PREP(VCOPLL_CLMP, VCOPLL_CLMP_VAL)); + } usleep_range(1, 10); uniphier_pciephy_deassert(priv); @@ -282,15 +299,18 @@ static const struct uniphier_pciephy_soc_data uniphier_pro5_data = { static const struct uniphier_pciephy_soc_data uniphier_ld20_data = { .is_legacy = false, + .is_dual_phy = false, .set_phymode = uniphier_pciephy_ld20_setmode, }; static const struct uniphier_pciephy_soc_data uniphier_pxs3_data = { .is_legacy = false, + .is_dual_phy = false, }; static const struct uniphier_pciephy_soc_data uniphier_nx1_data = { .is_legacy = false, + .is_dual_phy = true, .set_phymode = uniphier_pciephy_nx1_setmode, }; -- 2.7.4