From: Tony Lindgren <tony@atomide.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Felipe Balbi <balbi@ti.com>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 5/5] tty: serial: Add 8250-core based omap driver
Date: Thu, 17 Jul 2014 00:09:00 -0700 [thread overview]
Message-ID: <20140717070859.GD18374@atomide.com> (raw)
In-Reply-To: <1405521903-5877-6-git-send-email-bigeasy@linutronix.de>
* Sebastian Andrzej Siewior <bigeasy@linutronix.de> [140716 07:47]:
> This patch provides a 8250-core based UART driver for the internal OMAP
> UART. The longterm goal is to provide the same functionality as the
> current OMAP uart driver and hopefully DMA support which could borrowed
> from the 8250-core.
>
> It has been only tested as console UART on am335x-evm and dra7-evm.
> The device name is ttyS based instead of ttyO. If a ttyO based node name
> is required please ask udev for it. If both driver are activated (this
> and omap-serial) then this serial driver will take control over the
> device due to the link order
>
> v3…v4:
> - drop RS485 support
> - wire up ->throttle / ->unthrottle
> v2…v3:
> - wire up startup & shutdown for wakeup-irq handling.
> - RS485 handling (well the core does).
>
> v1…v2:
> - added runtime PM. Could somebody could plese double check
> this?
> - added omap_8250_set_termios()
Seems to boot a bit further now with output from serial console
initially, then I'm getting the following error again that's probably
related to clocks not enabled when the registers are accessed:
[ 1.050231] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.068664] 4806a000.serial: ttyS0 at MMIO 0x4806a000 (irq = 88, base_baud = 3000000) is a OMAP
[ 1.074676] 4806c000.serial: ttyS1 at MMIO 0x4806c000 (irq = 89, base_baud = 3000000) is a OMAP
[ 1.078613] console [ttyS2] disabled
[ 1.079193] 49020000.serial: ttyS2 at MMIO 0x49020000 (irq = 90, base_baud = 3000000) is a OMAP
[ 1.938110] console [ttyS2] enabled
[ 1.946533] 49042000.serial: ttyS3 at MMIO 0x49042000 (irq = 96, base_baud = 3000000) is a OMAP
...
[ 5.538421] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfb020000
[ 5.546142] Internal error: : 1028 [#1] SMP ARM
[ 5.550720] Modules linked in:
[ 5.553802] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-rc5-00070-g1f95851 #129
[ 5.561584] task: ce058b00 ti: ce05a000 task.ti: ce05a000
[ 5.567016] PC is at mem32_serial_in+0xc/0x1c
[ 5.571411] LR is at serial8250_do_startup+0xc8/0x89c
[ 5.576507] pc : [<c034731c>] lr : [<c034a988>] psr: 60000113
[ 5.576507] sp : ce05bcf0 ip : c0a008e8 fp : ce46c400
[ 5.588043] r10: 00000000 r9 : cda7a680 r8 : ce46c68c
[ 5.593292] r7 : ce46c400 r6 : 00000000 r5 : ce548e10 r4 : c10abf34
[ 5.599853] r3 : fb020000 r2 : 00000002 r1 : fb020000 r0 : c10abf34
[ 5.606414] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 5.613769] Control: 10c5387d Table: 80004019 DAC: 00000015
[ 5.619537] Process swapper/0 (pid: 1, stack limit = 0xce05a248)
...
[ 5.835601] [<c034731c>] (mem32_serial_in) from [<c034a988>] (serial8250_do_startup+0xc8/0x89c)
[ 5.844360] [<c034a988>] (serial8250_do_startup) from [<c034c58c>] (omap_8250_startup+0x5c/0xdc)
[ 5.853179] [<c034c58c>] (omap_8250_startup) from [<c034b170>] (serial8250_startup+0x14/0x20)
[ 5.861755] [<c034b170>] (serial8250_startup) from [<c0346584>] (uart_startup.part.3+0x7c/0x1dc)
[ 5.870605] [<c0346584>] (uart_startup.part.3) from [<c03470f4>] (uart_open+0xe4/0x124)
[ 5.878662] [<c03470f4>] (uart_open) from [<c032c528>] (tty_open+0x130/0x58c)
[ 5.885864] [<c032c528>] (tty_open) from [<c01216ec>] (chrdev_open+0x9c/0x174)
[ 5.893127] [<c01216ec>] (chrdev_open) from [<c011b8cc>] (do_dentry_open+0x1d0/0x310)
[ 5.901000] [<c011b8cc>] (do_dentry_open) from [<c011bd90>] (finish_open+0x34/0x4c)
[ 5.908721] [<c011bd90>] (finish_open) from [<c012a8f0>] (do_last.isra.27+0x5a4/0xb98)
[ 5.916687] [<c012a8f0>] (do_last.isra.27) from [<c012af98>] (path_openat+0xb4/0x5e4)
[ 5.924560] [<c012af98>] (path_openat) from [<c012b7d4>] (do_filp_open+0x2c/0x80)
[ 5.932098] [<c012b7d4>] (do_filp_open) from [<c011cd0c>] (do_sys_open+0x100/0x1d0)
[ 5.939788] [<c011cd0c>] (do_sys_open) from [<c07b6ce0>] (kernel_init_freeable+0x124/0x1c8)
[ 5.948211] [<c07b6ce0>] (kernel_init_freeable) from [<c054ed28>] (kernel_init+0x8/0xe4)
[ 5.956359] [<c054ed28>] (kernel_init) from [<c000e868>] (ret_from_fork+0x14/0x2c)
...
[ 5.974792] In-band Error seen by MPU at address 0
[ 5.979675] ------------[ cut here ]------------
[ 5.984344] WARNING: CPU: 0 PID: 1 at drivers/bus/omap_l3_smx.c:162 omap3_l3_app_irq+0xcc/0x124()
...
Regards,
Tony
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WARNING: multiple messages have this Message-ID (diff)
From: tony@atomide.com (Tony Lindgren)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 5/5] tty: serial: Add 8250-core based omap driver
Date: Thu, 17 Jul 2014 00:09:00 -0700 [thread overview]
Message-ID: <20140717070859.GD18374@atomide.com> (raw)
In-Reply-To: <1405521903-5877-6-git-send-email-bigeasy@linutronix.de>
* Sebastian Andrzej Siewior <bigeasy@linutronix.de> [140716 07:47]:
> This patch provides a 8250-core based UART driver for the internal OMAP
> UART. The longterm goal is to provide the same functionality as the
> current OMAP uart driver and hopefully DMA support which could borrowed
> from the 8250-core.
>
> It has been only tested as console UART on am335x-evm and dra7-evm.
> The device name is ttyS based instead of ttyO. If a ttyO based node name
> is required please ask udev for it. If both driver are activated (this
> and omap-serial) then this serial driver will take control over the
> device due to the link order
>
> v3?v4:
> - drop RS485 support
> - wire up ->throttle / ->unthrottle
> v2?v3:
> - wire up startup & shutdown for wakeup-irq handling.
> - RS485 handling (well the core does).
>
> v1?v2:
> - added runtime PM. Could somebody could plese double check
> this?
> - added omap_8250_set_termios()
Seems to boot a bit further now with output from serial console
initially, then I'm getting the following error again that's probably
related to clocks not enabled when the registers are accessed:
[ 1.050231] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.068664] 4806a000.serial: ttyS0 at MMIO 0x4806a000 (irq = 88, base_baud = 3000000) is a OMAP
[ 1.074676] 4806c000.serial: ttyS1 at MMIO 0x4806c000 (irq = 89, base_baud = 3000000) is a OMAP
[ 1.078613] console [ttyS2] disabled
[ 1.079193] 49020000.serial: ttyS2 at MMIO 0x49020000 (irq = 90, base_baud = 3000000) is a OMAP
[ 1.938110] console [ttyS2] enabled
[ 1.946533] 49042000.serial: ttyS3 at MMIO 0x49042000 (irq = 96, base_baud = 3000000) is a OMAP
...
[ 5.538421] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfb020000
[ 5.546142] Internal error: : 1028 [#1] SMP ARM
[ 5.550720] Modules linked in:
[ 5.553802] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-rc5-00070-g1f95851 #129
[ 5.561584] task: ce058b00 ti: ce05a000 task.ti: ce05a000
[ 5.567016] PC is at mem32_serial_in+0xc/0x1c
[ 5.571411] LR is at serial8250_do_startup+0xc8/0x89c
[ 5.576507] pc : [<c034731c>] lr : [<c034a988>] psr: 60000113
[ 5.576507] sp : ce05bcf0 ip : c0a008e8 fp : ce46c400
[ 5.588043] r10: 00000000 r9 : cda7a680 r8 : ce46c68c
[ 5.593292] r7 : ce46c400 r6 : 00000000 r5 : ce548e10 r4 : c10abf34
[ 5.599853] r3 : fb020000 r2 : 00000002 r1 : fb020000 r0 : c10abf34
[ 5.606414] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 5.613769] Control: 10c5387d Table: 80004019 DAC: 00000015
[ 5.619537] Process swapper/0 (pid: 1, stack limit = 0xce05a248)
...
[ 5.835601] [<c034731c>] (mem32_serial_in) from [<c034a988>] (serial8250_do_startup+0xc8/0x89c)
[ 5.844360] [<c034a988>] (serial8250_do_startup) from [<c034c58c>] (omap_8250_startup+0x5c/0xdc)
[ 5.853179] [<c034c58c>] (omap_8250_startup) from [<c034b170>] (serial8250_startup+0x14/0x20)
[ 5.861755] [<c034b170>] (serial8250_startup) from [<c0346584>] (uart_startup.part.3+0x7c/0x1dc)
[ 5.870605] [<c0346584>] (uart_startup.part.3) from [<c03470f4>] (uart_open+0xe4/0x124)
[ 5.878662] [<c03470f4>] (uart_open) from [<c032c528>] (tty_open+0x130/0x58c)
[ 5.885864] [<c032c528>] (tty_open) from [<c01216ec>] (chrdev_open+0x9c/0x174)
[ 5.893127] [<c01216ec>] (chrdev_open) from [<c011b8cc>] (do_dentry_open+0x1d0/0x310)
[ 5.901000] [<c011b8cc>] (do_dentry_open) from [<c011bd90>] (finish_open+0x34/0x4c)
[ 5.908721] [<c011bd90>] (finish_open) from [<c012a8f0>] (do_last.isra.27+0x5a4/0xb98)
[ 5.916687] [<c012a8f0>] (do_last.isra.27) from [<c012af98>] (path_openat+0xb4/0x5e4)
[ 5.924560] [<c012af98>] (path_openat) from [<c012b7d4>] (do_filp_open+0x2c/0x80)
[ 5.932098] [<c012b7d4>] (do_filp_open) from [<c011cd0c>] (do_sys_open+0x100/0x1d0)
[ 5.939788] [<c011cd0c>] (do_sys_open) from [<c07b6ce0>] (kernel_init_freeable+0x124/0x1c8)
[ 5.948211] [<c07b6ce0>] (kernel_init_freeable) from [<c054ed28>] (kernel_init+0x8/0xe4)
[ 5.956359] [<c054ed28>] (kernel_init) from [<c000e868>] (ret_from_fork+0x14/0x2c)
...
[ 5.974792] In-band Error seen by MPU at address 0
[ 5.979675] ------------[ cut here ]------------
[ 5.984344] WARNING: CPU: 0 PID: 1 at drivers/bus/omap_l3_smx.c:162 omap3_l3_app_irq+0xcc/0x124()
...
Regards,
Tony
WARNING: multiple messages have this Message-ID (diff)
From: Tony Lindgren <tony@atomide.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
Felipe Balbi <balbi@ti.com>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 5/5] tty: serial: Add 8250-core based omap driver
Date: Thu, 17 Jul 2014 00:09:00 -0700 [thread overview]
Message-ID: <20140717070859.GD18374@atomide.com> (raw)
In-Reply-To: <1405521903-5877-6-git-send-email-bigeasy@linutronix.de>
* Sebastian Andrzej Siewior <bigeasy@linutronix.de> [140716 07:47]:
> This patch provides a 8250-core based UART driver for the internal OMAP
> UART. The longterm goal is to provide the same functionality as the
> current OMAP uart driver and hopefully DMA support which could borrowed
> from the 8250-core.
>
> It has been only tested as console UART on am335x-evm and dra7-evm.
> The device name is ttyS based instead of ttyO. If a ttyO based node name
> is required please ask udev for it. If both driver are activated (this
> and omap-serial) then this serial driver will take control over the
> device due to the link order
>
> v3…v4:
> - drop RS485 support
> - wire up ->throttle / ->unthrottle
> v2…v3:
> - wire up startup & shutdown for wakeup-irq handling.
> - RS485 handling (well the core does).
>
> v1…v2:
> - added runtime PM. Could somebody could plese double check
> this?
> - added omap_8250_set_termios()
Seems to boot a bit further now with output from serial console
initially, then I'm getting the following error again that's probably
related to clocks not enabled when the registers are accessed:
[ 1.050231] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 1.068664] 4806a000.serial: ttyS0 at MMIO 0x4806a000 (irq = 88, base_baud = 3000000) is a OMAP
[ 1.074676] 4806c000.serial: ttyS1 at MMIO 0x4806c000 (irq = 89, base_baud = 3000000) is a OMAP
[ 1.078613] console [ttyS2] disabled
[ 1.079193] 49020000.serial: ttyS2 at MMIO 0x49020000 (irq = 90, base_baud = 3000000) is a OMAP
[ 1.938110] console [ttyS2] enabled
[ 1.946533] 49042000.serial: ttyS3 at MMIO 0x49042000 (irq = 96, base_baud = 3000000) is a OMAP
...
[ 5.538421] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfb020000
[ 5.546142] Internal error: : 1028 [#1] SMP ARM
[ 5.550720] Modules linked in:
[ 5.553802] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.16.0-rc5-00070-g1f95851 #129
[ 5.561584] task: ce058b00 ti: ce05a000 task.ti: ce05a000
[ 5.567016] PC is at mem32_serial_in+0xc/0x1c
[ 5.571411] LR is at serial8250_do_startup+0xc8/0x89c
[ 5.576507] pc : [<c034731c>] lr : [<c034a988>] psr: 60000113
[ 5.576507] sp : ce05bcf0 ip : c0a008e8 fp : ce46c400
[ 5.588043] r10: 00000000 r9 : cda7a680 r8 : ce46c68c
[ 5.593292] r7 : ce46c400 r6 : 00000000 r5 : ce548e10 r4 : c10abf34
[ 5.599853] r3 : fb020000 r2 : 00000002 r1 : fb020000 r0 : c10abf34
[ 5.606414] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 5.613769] Control: 10c5387d Table: 80004019 DAC: 00000015
[ 5.619537] Process swapper/0 (pid: 1, stack limit = 0xce05a248)
...
[ 5.835601] [<c034731c>] (mem32_serial_in) from [<c034a988>] (serial8250_do_startup+0xc8/0x89c)
[ 5.844360] [<c034a988>] (serial8250_do_startup) from [<c034c58c>] (omap_8250_startup+0x5c/0xdc)
[ 5.853179] [<c034c58c>] (omap_8250_startup) from [<c034b170>] (serial8250_startup+0x14/0x20)
[ 5.861755] [<c034b170>] (serial8250_startup) from [<c0346584>] (uart_startup.part.3+0x7c/0x1dc)
[ 5.870605] [<c0346584>] (uart_startup.part.3) from [<c03470f4>] (uart_open+0xe4/0x124)
[ 5.878662] [<c03470f4>] (uart_open) from [<c032c528>] (tty_open+0x130/0x58c)
[ 5.885864] [<c032c528>] (tty_open) from [<c01216ec>] (chrdev_open+0x9c/0x174)
[ 5.893127] [<c01216ec>] (chrdev_open) from [<c011b8cc>] (do_dentry_open+0x1d0/0x310)
[ 5.901000] [<c011b8cc>] (do_dentry_open) from [<c011bd90>] (finish_open+0x34/0x4c)
[ 5.908721] [<c011bd90>] (finish_open) from [<c012a8f0>] (do_last.isra.27+0x5a4/0xb98)
[ 5.916687] [<c012a8f0>] (do_last.isra.27) from [<c012af98>] (path_openat+0xb4/0x5e4)
[ 5.924560] [<c012af98>] (path_openat) from [<c012b7d4>] (do_filp_open+0x2c/0x80)
[ 5.932098] [<c012b7d4>] (do_filp_open) from [<c011cd0c>] (do_sys_open+0x100/0x1d0)
[ 5.939788] [<c011cd0c>] (do_sys_open) from [<c07b6ce0>] (kernel_init_freeable+0x124/0x1c8)
[ 5.948211] [<c07b6ce0>] (kernel_init_freeable) from [<c054ed28>] (kernel_init+0x8/0xe4)
[ 5.956359] [<c054ed28>] (kernel_init) from [<c000e868>] (ret_from_fork+0x14/0x2c)
...
[ 5.974792] In-band Error seen by MPU at address 0
[ 5.979675] ------------[ cut here ]------------
[ 5.984344] WARNING: CPU: 0 PID: 1 at drivers/bus/omap_l3_smx.c:162 omap3_l3_app_irq+0xcc/0x124()
...
Regards,
Tony
next prev parent reply other threads:[~2014-07-17 7:09 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-16 14:44 [PATCH v4] 8250-core based serial driver for OMAP Sebastian Andrzej Siewior
2014-07-16 14:44 ` Sebastian Andrzej Siewior
2014-07-16 14:44 ` Sebastian Andrzej Siewior
2014-07-16 14:44 ` [PATCH 1/5] tty: serial: 8250 core: provide a function to export uart_8250_port Sebastian Andrzej Siewior
2014-07-16 14:44 ` Sebastian Andrzej Siewior
2014-07-16 14:45 ` [PATCH 2/5] tty: serial: 8250 core: allow to overwrite & export serial8250_startup() Sebastian Andrzej Siewior
2014-07-16 14:45 ` Sebastian Andrzej Siewior
2014-07-16 14:45 ` Sebastian Andrzej Siewior
2014-07-16 14:45 ` [PATCH 3/5] tty: serial: 8250 core: allow to set ->throttle / ->unthrottle callbacks Sebastian Andrzej Siewior
2014-07-16 14:45 ` Sebastian Andrzej Siewior
2014-07-16 14:45 ` [PATCH 4/5] tty: serial: 8250 core: add runtime pm Sebastian Andrzej Siewior
2014-07-16 14:45 ` Sebastian Andrzej Siewior
2014-07-16 15:16 ` Felipe Balbi
2014-07-16 15:16 ` Felipe Balbi
2014-07-16 15:16 ` Felipe Balbi
2014-07-16 15:54 ` Sebastian Andrzej Siewior
2014-07-16 15:54 ` Sebastian Andrzej Siewior
2014-07-16 16:06 ` Felipe Balbi
2014-07-16 16:06 ` Felipe Balbi
2014-07-16 16:06 ` Felipe Balbi
2014-07-16 16:40 ` Sebastian Andrzej Siewior
2014-07-16 16:40 ` Sebastian Andrzej Siewior
2014-07-16 16:40 ` Sebastian Andrzej Siewior
2014-07-16 16:46 ` Felipe Balbi
2014-07-16 16:46 ` Felipe Balbi
2014-07-16 16:46 ` Felipe Balbi
2014-07-17 15:31 ` Peter Hurley
2014-07-17 15:31 ` Peter Hurley
2014-07-17 15:43 ` Sebastian Andrzej Siewior
2014-07-17 15:43 ` Sebastian Andrzej Siewior
2014-07-17 16:02 ` Felipe Balbi
2014-07-17 16:02 ` Felipe Balbi
2014-07-17 16:02 ` Felipe Balbi
2014-07-17 16:06 ` Sebastian Andrzej Siewior
2014-07-17 16:06 ` Sebastian Andrzej Siewior
2014-07-17 16:18 ` Felipe Balbi
2014-07-17 16:18 ` Felipe Balbi
2014-07-17 16:18 ` Felipe Balbi
2014-07-18 8:35 ` Sebastian Andrzej Siewior
2014-07-18 8:35 ` Sebastian Andrzej Siewior
2014-07-18 8:35 ` Sebastian Andrzej Siewior
2014-07-18 15:31 ` Felipe Balbi
2014-07-18 15:31 ` Felipe Balbi
2014-07-18 15:31 ` Felipe Balbi
2014-07-18 15:53 ` Peter Hurley
2014-07-18 15:53 ` Peter Hurley
2014-07-18 16:02 ` Felipe Balbi
2014-07-18 16:02 ` Felipe Balbi
2014-07-18 16:02 ` Felipe Balbi
2014-07-16 14:45 ` [PATCH 5/5] tty: serial: Add 8250-core based omap driver Sebastian Andrzej Siewior
2014-07-16 14:45 ` Sebastian Andrzej Siewior
2014-07-17 7:09 ` Tony Lindgren [this message]
2014-07-17 7:09 ` Tony Lindgren
2014-07-17 7:09 ` Tony Lindgren
2014-07-17 7:42 ` Sebastian Andrzej Siewior
2014-07-17 7:42 ` Sebastian Andrzej Siewior
2014-07-17 8:12 ` Tony Lindgren
2014-07-17 8:12 ` Tony Lindgren
2014-07-17 10:06 ` Sebastian Andrzej Siewior
2014-07-17 10:06 ` Sebastian Andrzej Siewior
2014-07-18 6:24 ` Tony Lindgren
2014-07-18 6:24 ` Tony Lindgren
2014-07-18 6:24 ` Tony Lindgren
2014-07-21 9:35 ` Tony Lindgren
2014-07-21 9:35 ` Tony Lindgren
2014-07-21 9:35 ` Tony Lindgren
2014-08-13 16:20 ` Sebastian Andrzej Siewior
2014-08-13 16:20 ` Sebastian Andrzej Siewior
2014-08-13 16:37 ` Tony Lindgren
2014-08-13 16:37 ` Tony Lindgren
2014-07-17 14:54 ` Felipe Balbi
2014-07-17 14:54 ` Felipe Balbi
2014-07-17 14:54 ` Felipe Balbi
2014-07-17 15:11 ` Sebastian Andrzej Siewior
2014-07-17 15:11 ` Sebastian Andrzej Siewior
2014-07-17 16:04 ` Felipe Balbi
2014-07-17 16:04 ` Felipe Balbi
2014-07-17 16:04 ` Felipe Balbi
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