From patchwork Fri Aug 23 06:40:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?Q2h1bmZlbmcgWXVuICjkupHmmKXls7Ap?= X-Patchwork-Id: 11110653 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2BA7F1395 for ; Fri, 23 Aug 2019 06:40:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 12B6A22CEC for ; Fri, 23 Aug 2019 06:40:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392343AbfHWGks (ORCPT ); Fri, 23 Aug 2019 02:40:48 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:43609 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S2388663AbfHWGkr (ORCPT ); Fri, 23 Aug 2019 02:40:47 -0400 X-UUID: 47de99e31def4dd286c05c6aeae9d764-20190823 X-UUID: 47de99e31def4dd286c05c6aeae9d764-20190823 Received: from mtkcas34.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 669928500; Fri, 23 Aug 2019 14:40:29 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Fri, 23 Aug 2019 14:40:25 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Fri, 23 Aug 2019 14:40:24 +0800 From: Chunfeng Yun To: Mathias Nyman , Greg Kroah-Hartman , Rob Herring CC: Matthias Brugger , Mark Rutland , Ian Campbell , Chunfeng Yun , , , , , Subject: [RESEND PATCH v2 2/2] usb: xhci-mtk: add an optional xhci_ck clock Date: Fri, 23 Aug 2019 14:40:25 +0800 Message-ID: <1566542425-20082-2-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1566542425-20082-1-git-send-email-chunfeng.yun@mediatek.com> References: <1566542425-20082-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: D5F0782D299C7618816412C070776E5DD47733EB89CD07D1E2052908E45C089E2000:8 X-MTK: N Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Some SoCs may have an optional clock xhci_ck (125M or 200M), it usually uses the same PLL as sys_ck, so support it. Signed-off-by: Chunfeng Yun Reviewed-by: Matthias Brugger Acked-by: Mathias Nyman --- v2 no changes --- drivers/usb/host/xhci-mtk.c | 13 +++++++++++++ drivers/usb/host/xhci-mtk.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index 026fe18972d3..b18a6baef204 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -216,6 +216,10 @@ static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk) return PTR_ERR(mtk->sys_clk); } + mtk->xhci_clk = devm_clk_get_optional(dev, "xhci_ck"); + if (IS_ERR(mtk->xhci_clk)) + return PTR_ERR(mtk->xhci_clk); + mtk->ref_clk = devm_clk_get_optional(dev, "ref_ck"); if (IS_ERR(mtk->ref_clk)) return PTR_ERR(mtk->ref_clk); @@ -244,6 +248,12 @@ static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk) goto sys_clk_err; } + ret = clk_prepare_enable(mtk->xhci_clk); + if (ret) { + dev_err(mtk->dev, "failed to enable xhci_clk\n"); + goto xhci_clk_err; + } + ret = clk_prepare_enable(mtk->mcu_clk); if (ret) { dev_err(mtk->dev, "failed to enable mcu_clk\n"); @@ -261,6 +271,8 @@ static int xhci_mtk_clks_enable(struct xhci_hcd_mtk *mtk) dma_clk_err: clk_disable_unprepare(mtk->mcu_clk); mcu_clk_err: + clk_disable_unprepare(mtk->xhci_clk); +xhci_clk_err: clk_disable_unprepare(mtk->sys_clk); sys_clk_err: clk_disable_unprepare(mtk->ref_clk); @@ -272,6 +284,7 @@ static void xhci_mtk_clks_disable(struct xhci_hcd_mtk *mtk) { clk_disable_unprepare(mtk->dma_clk); clk_disable_unprepare(mtk->mcu_clk); + clk_disable_unprepare(mtk->xhci_clk); clk_disable_unprepare(mtk->sys_clk); clk_disable_unprepare(mtk->ref_clk); } diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index 8be8c5f7ff62..5ac458b7d2e0 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -139,6 +139,7 @@ struct xhci_hcd_mtk { struct regulator *vusb33; struct regulator *vbus; struct clk *sys_clk; /* sys and mac clock */ + struct clk *xhci_clk; struct clk *ref_clk; struct clk *mcu_clk; struct clk *dma_clk;