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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF77DECAAD4 for ; Mon, 29 Aug 2022 08:09:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229894AbiH2II5 (ORCPT ); Mon, 29 Aug 2022 04:08:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229885AbiH2IIo (ORCPT ); Mon, 29 Aug 2022 04:08:44 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 527A452822; Mon, 29 Aug 2022 01:08:39 -0700 (PDT) X-UUID: 3f817560679c4b61b99f0799a4f9b31e-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-UNFAMILIAR: 1 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.10,REQID:57b06774-c721-4ccb-86fb-ad10888e02f1,OB:0,L OB:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:100,FILE:0,BULK:0,RULE:Releas e_Ham,ACTION:release,TS:100 X-CID-INFO: VERSION:1.1.10,REQID:57b06774-c721-4ccb-86fb-ad10888e02f1,OB:0,LOB :0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:100,FILE:0,BULK:0,RULE:Spam_GS9 81B3D,ACTION:quarantine,TS:100 X-CID-META: VersionHash:84eae18,CLOUDID:76856820-1c20-48a5-82a0-25f9c331906d,C OID:8f99929d9f75,Recheck:0,SF:28|16|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 3f817560679c4b61b99f0799a4f9b31e-20220829 Received: from mtkcas11.mediatek.inc [(172.21.101.40)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 929739708; Mon, 29 Aug 2022 16:08:35 +0800 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 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 */ -- 2.18.0