From patchwork Mon Jan 17 07:07:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?QmlhbyBIdWFuZyAo6buE5b2qKQ==?= X-Patchwork-Id: 12714894 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 74A92C433F5 for ; Mon, 17 Jan 2022 07:16:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=g5XqI77jOPFa1z9zn4I0yPzWN7WPuW8BrYQpi7IhOQE=; b=rQBvnV4Yv5bNFk jbpL+CAKEBo62CS/B9rYmlqnHZuBN8rIUQmsFzHc2AP6/hMxji70WFNNYaUOusYJ7VoSO/EUfbGco DWsjlOsrteoRSCcAjzEPpxU8xNg/KZ0WCo9J5ClMTwyNhxylJyqIRmO+zH/KZrcYEOpZyuoB2Q7RW T5gOnhgpmOb5jQk0TKejLz7gE/fqBd+cgCsajY3KkpQLf4mKoEwxUO5NvMPI3lM4hS2mSIiN7VpQ6 HeyZnVNtk363a1Y9YIDIiuvY9xpYw39TOPtmJz6KCClsOAB64GBH6cMiDlN+AERCr+x51lQlil5yt UrxoqzmqyJ2tL8VOV/zg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9MDu-00Dmik-AC; Mon, 17 Jan 2022 07:14:38 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9MC2-00DltH-RJ; Mon, 17 Jan 2022 07:12:45 +0000 X-UUID: 162b4dae185a4292ab7fa77714bf0745-20220117 X-UUID: 162b4dae185a4292ab7fa77714bf0745-20220117 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 756876131; Mon, 17 Jan 2022 00:12:34 -0700 Received: from mtkmbs10n2.mediatek.inc (172.21.101.183) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 16 Jan 2022 23:07:18 -0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Mon, 17 Jan 2022 15:07:17 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 17 Jan 2022 15:07:16 +0800 From: Biao Huang To: , Jakub Kicinski , Rob Herring , CC: Matthias Brugger , Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , Maxime Coquelin , Biao Huang , , , , , , , , , Subject: [PATCH net-next v12 6/7] stmmac: dwmac-mediatek: add support for mt8195 Date: Mon, 17 Jan 2022 15:07:05 +0800 Message-ID: <20220117070706.17853-7-biao.huang@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220117070706.17853-1-biao.huang@mediatek.com> References: <20220117070706.17853-1-biao.huang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220116_231242_962668_7FB51271 X-CRM114-Status: GOOD ( 24.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add Ethernet support for MediaTek SoCs from the mt8195 family. Signed-off-by: Biao Huang Acked-by: AngeloGioacchino Del Regno --- .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 278 +++++++++++++++++- 1 file changed, 268 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c index 2678d2deb26a..3b12434fdb24 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c @@ -39,6 +39,33 @@ #define ETH_FINE_DLY_GTXC BIT(1) #define ETH_FINE_DLY_RXC BIT(0) +/* Peri Configuration register for mt8195 */ +#define MT8195_PERI_ETH_CTRL0 0xFD0 +#define MT8195_RMII_CLK_SRC_INTERNAL BIT(28) +#define MT8195_RMII_CLK_SRC_RXC BIT(27) +#define MT8195_ETH_INTF_SEL GENMASK(26, 24) +#define MT8195_RGMII_TXC_PHASE_CTRL BIT(22) +#define MT8195_EXT_PHY_MODE BIT(21) +#define MT8195_DLY_GTXC_INV BIT(12) +#define MT8195_DLY_GTXC_ENABLE BIT(5) +#define MT8195_DLY_GTXC_STAGES GENMASK(4, 0) + +#define MT8195_PERI_ETH_CTRL1 0xFD4 +#define MT8195_DLY_RXC_INV BIT(25) +#define MT8195_DLY_RXC_ENABLE BIT(18) +#define MT8195_DLY_RXC_STAGES GENMASK(17, 13) +#define MT8195_DLY_TXC_INV BIT(12) +#define MT8195_DLY_TXC_ENABLE BIT(5) +#define MT8195_DLY_TXC_STAGES GENMASK(4, 0) + +#define MT8195_PERI_ETH_CTRL2 0xFD8 +#define MT8195_DLY_RMII_RXC_INV BIT(25) +#define MT8195_DLY_RMII_RXC_ENABLE BIT(18) +#define MT8195_DLY_RMII_RXC_STAGES GENMASK(17, 13) +#define MT8195_DLY_RMII_TXC_INV BIT(12) +#define MT8195_DLY_RMII_TXC_ENABLE BIT(5) +#define MT8195_DLY_RMII_TXC_STAGES GENMASK(4, 0) + struct mac_delay_struct { u32 tx_delay; u32 rx_delay; @@ -57,12 +84,14 @@ struct mediatek_dwmac_plat_data { phy_interface_t phy_mode; bool rmii_clk_from_mac; bool rmii_rxc; + bool mac_wol; int num_clks; }; struct mediatek_dwmac_variant { int (*dwmac_set_phy_interface)(struct mediatek_dwmac_plat_data *plat); int (*dwmac_set_delay)(struct mediatek_dwmac_plat_data *plat); + void (*dwmac_fix_mac_speed)(void *priv, unsigned int speed); /* clock ids to be requested */ const char * const *clk_list; @@ -78,6 +107,10 @@ static const char * const mt2712_dwmac_clk_l[] = { "axi", "apb", "mac_main", "ptp_ref" }; +static const char * const mt8195_dwmac_clk_l[] = { + "axi", "apb", "mac_cg", "mac_main", "ptp_ref" +}; + static int mt2712_set_interface(struct mediatek_dwmac_plat_data *plat) { int rmii_clk_from_mac = plat->rmii_clk_from_mac ? RMII_CLK_SRC_INTERNAL : 0; @@ -257,6 +290,193 @@ static const struct mediatek_dwmac_variant mt2712_gmac_variant = { .tx_delay_max = 17600, }; +static int mt8195_set_interface(struct mediatek_dwmac_plat_data *plat) +{ + int rmii_clk_from_mac = plat->rmii_clk_from_mac ? MT8195_RMII_CLK_SRC_INTERNAL : 0; + int rmii_rxc = plat->rmii_rxc ? MT8195_RMII_CLK_SRC_RXC : 0; + u32 intf_val = 0; + + /* select phy interface in top control domain */ + switch (plat->phy_mode) { + case PHY_INTERFACE_MODE_MII: + intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_MII); + break; + case PHY_INTERFACE_MODE_RMII: + intf_val |= (rmii_rxc | rmii_clk_from_mac); + intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_RMII); + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_TXID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_ID: + intf_val |= FIELD_PREP(MT8195_ETH_INTF_SEL, PHY_INTF_RGMII); + break; + default: + dev_err(plat->dev, "phy interface not supported\n"); + return -EINVAL; + } + + /* MT8195 only support external PHY */ + intf_val |= MT8195_EXT_PHY_MODE; + + regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL0, intf_val); + + return 0; +} + +static void mt8195_delay_ps2stage(struct mediatek_dwmac_plat_data *plat) +{ + struct mac_delay_struct *mac_delay = &plat->mac_delay; + + /* 290ps per stage */ + mac_delay->tx_delay /= 290; + mac_delay->rx_delay /= 290; +} + +static void mt8195_delay_stage2ps(struct mediatek_dwmac_plat_data *plat) +{ + struct mac_delay_struct *mac_delay = &plat->mac_delay; + + /* 290ps per stage */ + mac_delay->tx_delay *= 290; + mac_delay->rx_delay *= 290; +} + +static int mt8195_set_delay(struct mediatek_dwmac_plat_data *plat) +{ + struct mac_delay_struct *mac_delay = &plat->mac_delay; + u32 gtxc_delay_val = 0, delay_val = 0, rmii_delay_val = 0; + + mt8195_delay_ps2stage(plat); + + switch (plat->phy_mode) { + case PHY_INTERFACE_MODE_MII: + delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE, !!mac_delay->tx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_TXC_STAGES, mac_delay->tx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_TXC_INV, mac_delay->tx_inv); + + delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, !!mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, mac_delay->rx_inv); + break; + case PHY_INTERFACE_MODE_RMII: + if (plat->rmii_clk_from_mac) { + /* case 1: mac provides the rmii reference clock, + * and the clock output to TXC pin. + * The egress timing can be adjusted by RMII_TXC delay macro circuit. + * The ingress timing can be adjusted by RMII_RXC delay macro circuit. + */ + rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_ENABLE, + !!mac_delay->tx_delay); + rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_STAGES, + mac_delay->tx_delay); + rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_TXC_INV, + mac_delay->tx_inv); + + rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_ENABLE, + !!mac_delay->rx_delay); + rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_STAGES, + mac_delay->rx_delay); + rmii_delay_val |= FIELD_PREP(MT8195_DLY_RMII_RXC_INV, + mac_delay->rx_inv); + } else { + /* case 2: the rmii reference clock is from external phy, + * and the property "rmii_rxc" indicates which pin(TXC/RXC) + * the reference clk is connected to. The reference clock is a + * received signal, so rx_delay/rx_inv are used to indicate + * the reference clock timing adjustment + */ + if (plat->rmii_rxc) { + /* the rmii reference clock from outside is connected + * to RXC pin, the reference clock will be adjusted + * by RXC delay macro circuit. + */ + delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, + !!mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, + mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, + mac_delay->rx_inv); + } else { + /* the rmii reference clock from outside is connected + * to TXC pin, the reference clock will be adjusted + * by TXC delay macro circuit. + */ + delay_val |= FIELD_PREP(MT8195_DLY_TXC_ENABLE, + !!mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_TXC_STAGES, + mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_TXC_INV, + mac_delay->rx_inv); + } + } + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_TXID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_ID: + gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_ENABLE, !!mac_delay->tx_delay); + gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_STAGES, mac_delay->tx_delay); + gtxc_delay_val |= FIELD_PREP(MT8195_DLY_GTXC_INV, mac_delay->tx_inv); + + delay_val |= FIELD_PREP(MT8195_DLY_RXC_ENABLE, !!mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_RXC_STAGES, mac_delay->rx_delay); + delay_val |= FIELD_PREP(MT8195_DLY_RXC_INV, mac_delay->rx_inv); + + break; + default: + dev_err(plat->dev, "phy interface not supported\n"); + return -EINVAL; + } + + regmap_update_bits(plat->peri_regmap, + MT8195_PERI_ETH_CTRL0, + MT8195_RGMII_TXC_PHASE_CTRL | + MT8195_DLY_GTXC_INV | + MT8195_DLY_GTXC_ENABLE | + MT8195_DLY_GTXC_STAGES, + gtxc_delay_val); + regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL1, delay_val); + regmap_write(plat->peri_regmap, MT8195_PERI_ETH_CTRL2, rmii_delay_val); + + mt8195_delay_stage2ps(plat); + + return 0; +} + +static void mt8195_fix_mac_speed(void *priv, unsigned int speed) +{ + struct mediatek_dwmac_plat_data *priv_plat = priv; + + if ((phy_interface_mode_is_rgmii(priv_plat->phy_mode))) { + /* prefer 2ns fixed delay which is controlled by TXC_PHASE_CTRL, + * when link speed is 1Gbps with RGMII interface, + * Fall back to delay macro circuit for 10/100Mbps link speed. + */ + if (speed == SPEED_1000) + regmap_update_bits(priv_plat->peri_regmap, + MT8195_PERI_ETH_CTRL0, + MT8195_RGMII_TXC_PHASE_CTRL | + MT8195_DLY_GTXC_ENABLE | + MT8195_DLY_GTXC_INV | + MT8195_DLY_GTXC_STAGES, + MT8195_RGMII_TXC_PHASE_CTRL); + else + mt8195_set_delay(priv_plat); + } +} + +static const struct mediatek_dwmac_variant mt8195_gmac_variant = { + .dwmac_set_phy_interface = mt8195_set_interface, + .dwmac_set_delay = mt8195_set_delay, + .dwmac_fix_mac_speed = mt8195_fix_mac_speed, + .clk_list = mt8195_dwmac_clk_l, + .num_clks = ARRAY_SIZE(mt8195_dwmac_clk_l), + .dma_bit_mask = 35, + .rx_delay_max = 9280, + .tx_delay_max = 9280, +}; + static int mediatek_dwmac_config_dt(struct mediatek_dwmac_plat_data *plat) { struct mac_delay_struct *mac_delay = &plat->mac_delay; @@ -297,6 +517,7 @@ static int mediatek_dwmac_config_dt(struct mediatek_dwmac_plat_data *plat) mac_delay->rx_inv = of_property_read_bool(plat->np, "mediatek,rxc-inverse"); plat->rmii_rxc = of_property_read_bool(plat->np, "mediatek,rmii-rxc"); plat->rmii_clk_from_mac = of_property_read_bool(plat->np, "mediatek,rmii-clk-from-mac"); + plat->mac_wol = of_property_read_bool(plat->np, "mediatek,mac-wol"); return 0; } @@ -409,6 +630,50 @@ static int mediatek_dwmac_clks_config(void *priv, bool enabled) return ret; } + +static int mediatek_dwmac_common_data(struct platform_device *pdev, + struct plat_stmmacenet_data *plat, + struct mediatek_dwmac_plat_data *priv_plat) +{ + int i; + + plat->interface = priv_plat->phy_mode; + plat->use_phy_wol = priv_plat->mac_wol ? 0 : 1; + plat->riwt_off = 1; + plat->maxmtu = ETH_DATA_LEN; + plat->addr64 = priv_plat->variant->dma_bit_mask; + plat->bsp_priv = priv_plat; + plat->init = mediatek_dwmac_init; + plat->exit = mediatek_dwmac_exit; + plat->clks_config = mediatek_dwmac_clks_config; + if (priv_plat->variant->dwmac_fix_mac_speed) + plat->fix_mac_speed = priv_plat->variant->dwmac_fix_mac_speed; + + plat->safety_feat_cfg = devm_kzalloc(&pdev->dev, + sizeof(*plat->safety_feat_cfg), + GFP_KERNEL); + if (!plat->safety_feat_cfg) + return -ENOMEM; + + plat->safety_feat_cfg->tsoee = 1; + plat->safety_feat_cfg->mrxpee = 0; + plat->safety_feat_cfg->mestee = 1; + plat->safety_feat_cfg->mrxee = 1; + plat->safety_feat_cfg->mtxee = 1; + plat->safety_feat_cfg->epsi = 0; + plat->safety_feat_cfg->edpp = 1; + plat->safety_feat_cfg->prtyen = 1; + plat->safety_feat_cfg->tmouten = 1; + + for (i = 0; i < plat->tx_queues_to_use; i++) { + /* Default TX Q0 to use TSO and rest TXQ for TBS */ + if (i > 0) + plat->tx_queues_cfg[i].tbs_en = 1; + } + + return 0; +} + static int mediatek_dwmac_probe(struct platform_device *pdev) { struct mediatek_dwmac_plat_data *priv_plat; @@ -445,16 +710,7 @@ static int mediatek_dwmac_probe(struct platform_device *pdev) if (IS_ERR(plat_dat)) return PTR_ERR(plat_dat); - plat_dat->interface = priv_plat->phy_mode; - plat_dat->use_phy_wol = 1; - plat_dat->riwt_off = 1; - plat_dat->maxmtu = ETH_DATA_LEN; - plat_dat->addr64 = priv_plat->variant->dma_bit_mask; - plat_dat->bsp_priv = priv_plat; - plat_dat->init = mediatek_dwmac_init; - plat_dat->exit = mediatek_dwmac_exit; - plat_dat->clks_config = mediatek_dwmac_clks_config; - + mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); mediatek_dwmac_init(pdev, priv_plat); ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); @@ -469,6 +725,8 @@ static int mediatek_dwmac_probe(struct platform_device *pdev) static const struct of_device_id mediatek_dwmac_match[] = { { .compatible = "mediatek,mt2712-gmac", .data = &mt2712_gmac_variant }, + { .compatible = "mediatek,mt8195-gmac", + .data = &mt8195_gmac_variant }, { } };