From patchwork Sun Jul 28 13:00:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 815242 Received: from mout.gmx.net (mout.gmx.net [212.227.15.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7190739FCE; Sun, 28 Jul 2024 13:05:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.15 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722171925; cv=none; b=Stx2/o69cdp1UrdYVjGy3at02HwvZCpTeQQW3LDJj1l6HkFH6oZ+BE5SiBsM/V5Ht4Gofn6bQL3ip41VJNYZTGfBilCWSZvMcxbKNHhjgFsu4X1ZNVwMSXQu8ITsAKVxEXO7rcnG+5qvTVNLjiPxUYSVbDrlYrTwQrZbF9hQ3KY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722171925; c=relaxed/simple; bh=1OgNP2z2wcObDZoggVwBSp/N3WuQBXgDb7IqEI1gJ1A=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; 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b=LmscagCWdykxy8BHKIPNK4bcXTouq8j/oUpumI0X0mp69ItEAEIyO4a+6RpIBkYZ 6NF329NP3eJHwTPcEhoiu7JpIMFxjjwksG84J5YRVfGQzrYYJMABi2WI8V5xDNzM8 cUpRefPt40a42h1X+B3yMcdQOb2uW4W/nY2X11+lGtmXGHwAYYBtTvfISwcD+pF9I iJbStJF9oorst5a8YTzG1Bki/NUsb0+3xXRgfWPEyAlZKuNdkiCy7oOVplvBjOYe9 L54Z1Z188auJMY3svXTwvChidjc5L3ljXMFSaPEigEwHZs1uJusyXUy/+u18XPtQS qrmnJtHVd+00Cw9g4A== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from stefanw-SCHENKER ([37.4.248.43]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1Msq6M-1sIjaL0js0-00xHk0; Sun, 28 Jul 2024 15:04:57 +0200 From: Stefan Wahren To: Greg Kroah-Hartman , Florian Fainelli , Ray Jui , Scott Branden , Maxime Ripard , Jassi Brar , Ulf Hansson , =?utf-8?q?Ma=C3=ADra_Canal?= , Jiri Slaby , Minas Harutyunyan Cc: Dave Stevenson , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Lukas Wunner , Artur Petrosyan , Peter Robinson , dri-devel@lists.freedesktop.org, bcm-kernel-feedback-list@broadcom.com, linux-pm@vger.kernel.org, linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-list@raspberrypi.com, Stefan Wahren Subject: [PATCH V2 13/16] usb: dwc2: Skip clock gating on Broadcom SoCs Date: Sun, 28 Jul 2024 15:00:26 +0200 Message-Id: <20240728130029.78279-5-wahrenst@gmx.net> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240728130029.78279-1-wahrenst@gmx.net> References: <20240728114200.75559-1-wahrenst@gmx.net> <20240728130029.78279-1-wahrenst@gmx.net> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Provags-ID: V03:K1:s8dsyj9qqRYRsL8bQxmQ5roOnkmyC1BaDiF5Im83qgwzAe1fvr6 YXnXSZOZhFMguv09RAYYhDM4htVwDa5FeYuT+H/zRLHpvpAy3embHN092azTN9XIXKqI6LQ EqeF4jqQqz0Xe9a4i3mCDUz+PSAKUgHCcZwsaiIzby2QVe8AwODU1/uwi5Y8+rBTJyoqgFR 2p/gSxu8/5aOBWD7jcRDQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:JTYlFqlSooo=;Pk+uJOwCtCXcINyxmO7dEmrah04 UlqaymRbX4CDsGbuGm87NnD4Zn9nFGfDHkF9XM3X/7qCMlMnukYR9YbOGd1+h/CDfAO/QXR4j Mi2OYWa33FGI4McxuWU+k3ftzulYGx/FwCwVrvnMRwcN+0IM9AYCJ+66ykuqV2SKu0KB+0bvD CY9dth/UCl9UTQqAnavn+GsgK6M8oeULSmIFCKyWHHxqVmLwunOUfQqgO3EEIojncArkOAii4 /PVwVRf1NGvHecEiEnugwPkApVZwnPT3S91JTtXLBBZlCvdXhxM+WuznxF53Q76HfCUd7SORq h+LO45U2Uph33zEydNLlS2aNgdLD+6cF1iTACUrQJcTxOxtIAYYfzP2v9hjUC+E9HJy9us6fr /qIDEwOBsbSDNNSU7WKBPK/IXkyHCOHI8/eT4HW/9mkSdlhqcH7LyKNf5y0qV0jhQ++4XDGC7 +IXc0XGnvzCIkz/Rv/0oBnCnWU5B72aF3k+w6vTXN4YJ5TFv3RSj5E9E0Q6TyQd6sA9Mr4jmk C0x0+lXe2PhRxsH8fpKLWSUyHl7/w7sowHnSLl2VxiALCZtxa8IZmr3Bw4ddDW4l4UUz6HFVU kMtmIYztsHjrF23zxLoYPgzujYEvmxbWW+xnAt9jPSUEjs09kaBq1nO+4b6i7KWuHxgPtNSQa HURzalESXk+ZB6LBTxFryPcDIlnAn98/xIz+NNaQsDbC1vkN3LdZTb/cBIkHnvf1URGknvGRK LeEn0gIHaO/zO85hJoiPuCejMqKbxwdJ9cjQ5+A7+EjcTBULn2AxkjZ6lW7WjoEge/ysaLKGd sj4BCm6UWRIQKx6Nheb7bDpoQK+JoNk6fxrIqPkDdPPoM= On resume of the Raspberry Pi the dwc2 driver fails to enable HCD_FLAG_HW_ACCESSIBLE before re-enabling the interrupts. This causes a situation where both handler ignore a incoming port interrupt and force the upper layers to disable the dwc2 interrupt line. This leaves the USB interface in a unusable state: irq 66: nobody cared (try booting with the "irqpoll" option) CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 6.10.0-rc3 Hardware name: BCM2835 Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x50/0x64 dump_stack_lvl from __report_bad_irq+0x38/0xc0 __report_bad_irq from note_interrupt+0x2ac/0x2f4 note_interrupt from handle_irq_event+0x88/0x8c handle_irq_event from handle_level_irq+0xb4/0x1ac handle_level_irq from generic_handle_domain_irq+0x24/0x34 generic_handle_domain_irq from bcm2836_chained_handle_irq+0x24/0x28 bcm2836_chained_handle_irq from generic_handle_domain_irq+0x24/0x34 generic_handle_domain_irq from generic_handle_arch_irq+0x34/0x44 generic_handle_arch_irq from __irq_svc+0x88/0xb0 Exception stack(0xc1b01f20 to 0xc1b01f68) 1f20: 0005c0d4 00000001 00000000 00000000 c1b09780 c1d6b32c c1b04e54 c1a5eae8 1f40: c1b04e90 00000000 00000000 00000000 c1d6a8a0 c1b01f70 c11d2da8 c11d4160 1f60: 60000013 ffffffff __irq_svc from default_idle_call+0x1c/0xb0 default_idle_call from do_idle+0x21c/0x284 do_idle from cpu_startup_entry+0x28/0x2c cpu_startup_entry from kernel_init+0x0/0x12c handlers: [] dwc2_handle_common_intr [<75cd278b>] usb_hcd_irq Disabling IRQ #66 Disabling clock gating workaround this issue. Fixes: 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.") Link: https://lore.kernel.org/linux-usb/3fd0c2fb-4752-45b3-94eb-42352703e1fd@gmx.net/T/ Link: https://lore.kernel.org/all/5e8cbce0-3260-2971-484f-fc73a3b2bd28@synopsys.com/ Signed-off-by: Stefan Wahren Acked-by: Minas Harutyunyan --- drivers/usb/dwc2/params.c | 1 + 1 file changed, 1 insertion(+) -- 2.34.1 diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 4d73fae80b12..68226defdc60 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -23,6 +23,7 @@ static void dwc2_set_bcm_params(struct dwc2_hsotg *hsotg) p->max_transfer_size = 65535; p->max_packet_count = 511; p->ahbcfg = 0x10; + p->no_clock_gating = true; } static void dwc2_set_his_params(struct dwc2_hsotg *hsotg)