From patchwork Wed Nov 25 16:50:02 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 7701521 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 3A4B0BF90C for ; Wed, 25 Nov 2015 16:53:03 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AD81520842 for ; Wed, 25 Nov 2015 16:53:00 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC9E4207FD for ; Wed, 25 Nov 2015 16:52:59 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a1dHA-0001Xb-D6; Wed, 25 Nov 2015 16:50:36 +0000 Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1a1dH6-0001Vy-GJ for linux-arm-kernel@lists.infradead.org; Wed, 25 Nov 2015 16:50:33 +0000 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) by mx1.redhat.com (Postfix) with ESMTPS id 8FF9AC0D2237; Wed, 25 Nov 2015 16:50:16 +0000 (UTC) Received: from shalem.localdomain.com (vpn1-7-192.ams2.redhat.com [10.36.7.192]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id tAPGo5Lr017151; Wed, 25 Nov 2015 11:50:12 -0500 From: Hans de Goede To: Kishon Vijay Abraham I Subject: [PATCH v3 2/2] phy-sun4i-usb: Add support for the host usb-phys found on the H3 SoC Date: Wed, 25 Nov 2015 17:50:02 +0100 Message-Id: <1448470202-3628-2-git-send-email-hdegoede@redhat.com> In-Reply-To: <1448470202-3628-1-git-send-email-hdegoede@redhat.com> References: <1448470202-3628-1-git-send-email-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151125_085032_641494_88579FE8 X-CRM114-Status: GOOD ( 20.84 ) X-Spam-Score: -7.5 (-------) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree , Reinder de Haan , "Reinder E.N. de Haan" , linux-usb@vger.kernel.org, linux-sunxi@googlegroups.com, Hans de Goede , Chen-Yu Tsai , Maxime Ripard , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.8 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Reinder de Haan Note this commit only adds support for phys 1-3, phy 0, the otg phy, is not yet (fully) supported after this commit. Signed-off-by: Reinder de Haan Signed-off-by: Hans de Goede --- Changes in v2: -Change break; after dev_err() to return, as intended, fixing a compiler warning (the dev_err case should never be reached) Changes in v3: -Use of_match_node to get model specific config data --- .../devicetree/bindings/phy/sun4i-usb-phy.txt | 1 + drivers/phy/phy-sun4i-usb.c | 46 +++++++++++++++++----- 2 files changed, 38 insertions(+), 9 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt index 0cebf74..95736d7 100644 --- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt +++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt @@ -9,6 +9,7 @@ Required properties: * allwinner,sun7i-a20-usb-phy * allwinner,sun8i-a23-usb-phy * allwinner,sun8i-a33-usb-phy + * allwinner,sun8i-h3-usb-phy - reg : a list of offset + length pairs - reg-names : * "phy_ctrl" diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index 1d8f85d..2aed482 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -46,6 +46,9 @@ #define REG_PHYBIST 0x08 #define REG_PHYTUNE 0x0c #define REG_PHYCTL_A33 0x10 +#define REG_PHY_UNK_H3 0x20 + +#define REG_PMU_UNK_H3 0x10 #define PHYCTL_DATA BIT(7) @@ -79,7 +82,7 @@ #define PHY_DISCON_TH_SEL 0x2a #define PHY_SQUELCH_DETECT 0x3c -#define MAX_PHYS 3 +#define MAX_PHYS 4 /* * Note do not raise the debounce time, we must report Vusb high within 100ms @@ -91,6 +94,7 @@ enum sun4i_usb_phy_type { sun4i_a10_phy, sun8i_a33_phy, + sun8i_h3_phy, }; struct sun4i_usb_phy_cfg { @@ -101,6 +105,7 @@ struct sun4i_usb_phy_cfg { }; struct sun4i_usb_phy_data { + struct device *dev; void __iomem *base; const struct sun4i_usb_phy_cfg *cfg; struct mutex mutex; @@ -183,6 +188,9 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data, /* A33 needs us to set phyctl to 0 explicitly */ writel(0, phyctl); break; + case sun8i_h3_phy: + dev_err(phy_data->dev, "H3 usb_phy_write is not supported\n"); + return; } for (i = 0; i < len; i++) { @@ -243,6 +251,7 @@ static int sun4i_usb_phy_init(struct phy *_phy) struct sun4i_usb_phy *phy = phy_get_drvdata(_phy); struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy); int ret; + u32 val; ret = clk_prepare_enable(phy->clk); if (ret) @@ -254,16 +263,26 @@ static int sun4i_usb_phy_init(struct phy *_phy) return ret; } - /* Enable USB 45 Ohm resistor calibration */ - if (phy->index == 0) - sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); + if (data->cfg->type == sun8i_h3_phy) { + if (phy->index == 0) { + val = readl(data->base + REG_PHY_UNK_H3); + writel(val & ~1, data->base + REG_PHY_UNK_H3); + } - /* Adjust PHY's magnitude and rate */ - sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); + val = readl(phy->pmu + REG_PMU_UNK_H3); + writel(val & ~2, phy->pmu + REG_PMU_UNK_H3); + } else { + /* Enable USB 45 Ohm resistor calibration */ + if (phy->index == 0) + sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); - /* Disconnect threshold adjustment */ - sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, - data->cfg->disc_thresh, 2); + /* Adjust PHY's magnitude and rate */ + sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); + + /* Disconnect threshold adjustment */ + sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, + data->cfg->disc_thresh, 2); + } sun4i_usb_phy_passby(phy, 1); @@ -555,6 +574,13 @@ static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = { .dedicated_clocks = true, }; +static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = { + .num_phys = 4, + .disc_thresh = 3, + .type = sun8i_h3_phy, + .dedicated_clocks = true, +}; + static const struct of_device_id sun4i_usb_phy_of_match[] = { { .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg }, { .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg }, @@ -562,6 +588,7 @@ static const struct of_device_id sun4i_usb_phy_of_match[] = { { .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg }, { .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg }, { .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg }, + { .compatible = "allwinner,sun8i-h3-usb-phy", .data = &sun8i_h3_cfg }, { }, }; MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match); @@ -595,6 +622,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) mutex_init(&data->mutex); INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan); dev_set_drvdata(dev, data); + data->dev = dev; data->cfg = match->data; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");