From patchwork Mon Aug 29 08:08:26 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 12957515 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 65E39ECAAD4 for ; Mon, 29 Aug 2022 08:20:59 +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=6xJP+VWED1iluOOI6HtGkPfHdsCHeL/u/TOx0lwLbCs=; b=iM7YEOZFUn1EbS sD/fcP2L8d4JM+Wti4HCUYlPbvCaEpruULVwZRao/QyL39So8G7R5KMmzmF62u/h2QSE3AyIM24Vi e+N5f+RnYsth7HGu2VihRSAFAQzuPvCe8dzdEloh6j7JHmxSt5QqZHAeoWZBbZsRN7ktUlyIR0k+B aSN7n9FNLF8qCmLiz4Ok7PtcEOI5BsuyOPxZOOdNJBMX4ie1qOz6Z/3i8K+yN6t1Wth7k7DIRVxI9 Z3Zjk05SyuY7ehdFVTOJUIQb5QDp6O3BlOrQ+CgGmAuATtye1Q4Thn2IHzALCykg25DmSOK1Eicvk 59WQ4/u2vvR7pSrnNltg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSZzR-0066VG-P1; Mon, 29 Aug 2022 08:19:25 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSZzD-0066NE-O7; Mon, 29 Aug 2022 08:19:18 +0000 X-UUID: e745dafb7c764c6babaa554d9bd01f00-20220829 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=p3jDS+anpj2LQBBhFpvH/7hZoDUBQYDGsqtevz1LVB4=; b=UDpQYknpMmTmFnOwVza4ixEYY/LF6emmRe96HrBrmJXSiUH8AUk2XWMYzFWT4nNrTydzPv3ehQqCv+wwG403qwx6uGpS1HzYsFf0S2h2Sy/OtZuGN8fwJmJVQpNhk8gjKjXhbrUKCC0vnIMY0jKYaWWoed+rivhH168rIhMa8Hk=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.10,REQID:717f2b5b-e320-4d60-bd4d-a2eac22a1ba3,OB:0,L OB:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_ Ham,ACTION:release,TS:0 X-CID-META: VersionHash:84eae18,CLOUDID:32bae9cf-20bd-4e5e-ace8-00692b7ab380,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:11|1,File: nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: e745dafb7c764c6babaa554d9bd01f00-20220829 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1315279280; Mon, 29 Aug 2022 01:19:08 -0700 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Mon, 29 Aug 2022 16:08:33 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 29 Aug 2022 16:08:32 +0800 From: Chunfeng Yun To: Vinod Koul , Rob Herring CC: Chunfeng Yun , Kishon Vijay Abraham I , Krzysztof Kozlowski , Matthias Brugger , , , , , , Krzysztof Kozlowski , Eddie Hung Subject: [PATCH v2 3/7] phy: phy-mtk-tphy: add property to set pre-emphasis Date: Mon, 29 Aug 2022 16:08:26 +0800 Message-ID: <20220829080830.5378-3-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220829080830.5378-1-chunfeng.yun@mediatek.com> References: <20220829080830.5378-1-chunfeng.yun@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-20220829_011911_863820_6FF1A543 X-CRM114-Status: GOOD ( 10.18 ) 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 a property to set usb2 phy's pre-emphasis, it's disabled by default on some SoCs. Signed-off-by: Chunfeng Yun --- v2: no changes --- drivers/phy/mediatek/phy-mtk-tphy.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 8ee7682b8e93..986fde0f63a0 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -72,6 +72,8 @@ #define PA5_RG_U2_HS_100U_U3_EN BIT(11) #define U3P_USBPHYACR6 0x018 +#define PA6_RG_U2_PRE_EMP GENMASK(31, 30) +#define PA6_RG_U2_PRE_EMP_VAL(x) ((0x3 & (x)) << 30) #define PA6_RG_U2_BC11_SW_EN BIT(23) #define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20) #define PA6_RG_U2_DISCTH GENMASK(7, 4) @@ -370,6 +372,7 @@ struct mtk_phy_instance { int eye_term; int intr; int discth; + int pre_emphasis; bool bc12_en; }; @@ -841,10 +844,13 @@ static void phy_parse_property(struct mtk_tphy *tphy, &instance->intr); device_property_read_u32(dev, "mediatek,discth", &instance->discth); + device_property_read_u32(dev, "mediatek,pre-emphasis", + &instance->pre_emphasis); dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d, intr:%d, disc:%d\n", instance->bc12_en, instance->eye_src, instance->eye_vrt, instance->eye_term, instance->intr, instance->discth); + dev_dbg(dev, "pre-emp:%d\n", instance->pre_emphasis); } static void u2_phy_props_set(struct mtk_tphy *tphy, @@ -875,6 +881,10 @@ static void u2_phy_props_set(struct mtk_tphy *tphy, if (instance->discth) mtk_phy_update_bits(com + U3P_USBPHYACR6, PA6_RG_U2_DISCTH, PA6_RG_U2_DISCTH_VAL(instance->discth)); + + if (instance->pre_emphasis) + mtk_phy_update_bits(com + U3P_USBPHYACR6, PA6_RG_U2_PRE_EMP, + PA6_RG_U2_PRE_EMP_VAL(instance->pre_emphasis)); } /* type switch for usb3/pcie/sgmii/sata */