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x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S968724AbeCSSOn (ORCPT ); Mon, 19 Mar 2018 14:14:43 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:44282 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S968902AbeCSSOk (ORCPT ); Mon, 19 Mar 2018 14:14:40 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tero Kristo , Roger Quadros , Tony Lindgren , Sasha Levin Subject: [PATCH 4.4 038/134] ARM: DRA7: hwmod_data: Prevent wait_target_disable error for usb_otg_ss Date: Mon, 19 Mar 2018 19:05:21 +0100 Message-Id: <20180319171854.858515505@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180319171849.024066323@linuxfoundation.org> References: <20180319171849.024066323@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Roger Quadros [ Upstream commit e2d54fe76997301b49311bde7ba8ef52b47896f9 ] It seems that if L3_INIT clkdomain is kept in HW_AUTO while usb_otg_ss is in use then there are random chances that the usb_otg_ss module will fail to completely idle. i.e. IDLEST = 0x2 instead of 0x3. Preventing L3_INIT from HW_AUTO while usb_otg_ss module is in use fixes this issue. We don't know yet if usb_otg_ss instances 3 and 4 are affected by this issue or not so don't add this flag for those instances. Cc: Tero Kristo Signed-off-by: Roger Quadros Signed-off-by: Tony Lindgren Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-omap2/omap_hwmod_7xx_data.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/arm/mach-omap2/omap_hwmod_7xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_7xx_data.c @@ -2240,6 +2240,7 @@ static struct omap_hwmod dra7xx_usb_otg_ .class = &dra7xx_usb_otg_ss_hwmod_class, .clkdm_name = "l3init_clkdm", .main_clk = "dpll_core_h13x2_ck", + .flags = HWMOD_CLKDM_NOAUTO, .prcm = { .omap4 = { .clkctrl_offs = DRA7XX_CM_L3INIT_USB_OTG_SS1_CLKCTRL_OFFSET, @@ -2261,6 +2262,7 @@ static struct omap_hwmod dra7xx_usb_otg_ .class = &dra7xx_usb_otg_ss_hwmod_class, .clkdm_name = "l3init_clkdm", .main_clk = "dpll_core_h13x2_ck", + .flags = HWMOD_CLKDM_NOAUTO, .prcm = { .omap4 = { .clkctrl_offs = DRA7XX_CM_L3INIT_USB_OTG_SS2_CLKCTRL_OFFSET,