From: Peter Hurley <peter@hurleysoftware.com>
To: Nishanth Menon <nm@ti.com>, Sekhar Nori <nsekhar@ti.com>
Cc: linux-omap@vger.kernel.org,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Tony Lindgren <tony@atomide.com>
Subject: Re: [RFC PATCH] ARM: omap2plus_defconfig: Switch over to using 8250 driver
Date: Fri, 10 Apr 2015 15:40:39 -0400 [thread overview]
Message-ID: <55282737.8060407@hurleysoftware.com> (raw)
In-Reply-To: <1428689893-14605-1-git-send-email-nm@ti.com>
[ +Sebastian, +Tony ]
On 04/10/2015 02:18 PM, Nishanth Menon wrote:
> 8250 driver should be relatively feature complete. It can co-exist
> with omap-serial driver
Not really; if the omap_8250 is selected then it is probed first
and will be the only driver claiming omap UART ports.
omap-serial would just be dead-weight.
> , so just enable 8250 OMAP layer driver and
> route all ttyOx references to ttySx through the standard 8250 driver
> to ensure no breakage of userspace occurs.
Not quite; the only automatic handling is for console only, not for
userspace. Expect lots of userspace breakage.
Regards,
Peter Hurley
> Signed-off-by: Nishanth Menon <nm@ti.com>
> ---
> Current upstream next-20150410 status: (all boards pass without this patch)
> Test is a basic boot test (using omap2plus_defconfig ofcourse)..
>
> Ofcourse:
> [ 0.001035] WARNING: Your 'console=ttyO0' has been replaced by 'ttyS0'
> does not help userspace when they are not able to dynamically handle switch.
>
> Just curious if folks feel we are ready for this switch yet...
>
> ttyS-change
> 1: am335x-evm: BOOT: PASS: http://paste.ubuntu.org.cn/2551733
> 2: am335x-sk: BOOT: FAIL: http://paste.ubuntu.org.cn/2551734
> 3: am3517-evm: BOOT: FAIL: http://paste.ubuntu.org.cn/2551735
> 4: am37x-evm: BOOT: FAIL: http://paste.ubuntu.org.cn/2551736
> 5: am437x-sk: BOOT: FAIL: http://paste.ubuntu.org.cn/2551737
> 6: am43xx-epos: BOOT: FAIL: http://paste.ubuntu.org.cn/2551738
> 7: am43xx-gpevm: BOOT: PASS: http://paste.ubuntu.org.cn/2551739
> 8: BeagleBoard-XM: BOOT: FAIL: http://paste.ubuntu.org.cn/2551740
> 9: beagleboard-vanilla: BOOT: FAIL: http://paste.ubuntu.org.cn/2551741
> 10: beaglebone-black: BOOT: PASS: http://paste.ubuntu.org.cn/2551742
> 11: beaglebone: BOOT: FAIL: http://paste.ubuntu.org.cn/2551743
> 12: craneboard: BOOT: FAIL: http://paste.ubuntu.org.cn/2551744
> 13: dra72x-evm: BOOT: FAIL: http://paste.ubuntu.org.cn/2551745
> 14: dra7xx-evm: BOOT: FAIL: http://paste.ubuntu.org.cn/2551746
> 15: OMAP3430-Labrador(LDP): BOOT: FAIL: http://paste.ubuntu.org.cn/2551747
> 16: n900: BOOT: FAIL: http://paste.ubuntu.org.cn/2551748
> 17: omap5-evm: BOOT: FAIL: http://paste.ubuntu.org.cn/2551749
> 18: pandaboard-es: BOOT: FAIL: http://paste.ubuntu.org.cn/2551750
> 19: pandaboard-vanilla: BOOT: FAIL: http://paste.ubuntu.org.cn/2551751
> 20: sdp2430: BOOT: FAIL: http://paste.ubuntu.org.cn/2551752
> 21: sdp3430: BOOT: FAIL: http://paste.ubuntu.org.cn/2551753
> 22: sdp4430: BOOT: FAIL: http://paste.ubuntu.org.cn/2551754
> TOTAL = 22 boards, Booted Boards = 3, No Boot boards = 19
>
> arc/arm/configs/omap2plus_defconfig | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
> index 9ff7b54b2a83..6ef76856ac8e 100644
> --- a/arch/arm/configs/omap2plus_defconfig
> +++ b/arch/arm/configs/omap2plus_defconfig
> @@ -220,6 +220,8 @@ CONFIG_SERIAL_8250_MANY_PORTS=y
> CONFIG_SERIAL_8250_SHARE_IRQ=y
> CONFIG_SERIAL_8250_DETECT_IRQ=y
> CONFIG_SERIAL_8250_RSA=y
> +CONFIG_SERIAL_8250_OMAP=y
> +CONFIG_SERIAL_8250_OMAP_TTYO_FIXUP=y
> CONFIG_SERIAL_OF_PLATFORM=y
> CONFIG_SERIAL_OMAP=y
> CONFIG_SERIAL_OMAP_CONSOLE=y
>
next prev parent reply other threads:[~2015-04-10 19:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 18:18 [RFC PATCH] ARM: omap2plus_defconfig: Switch over to using 8250 driver Nishanth Menon
2015-04-10 19:40 ` Peter Hurley [this message]
2015-04-11 18:27 ` Nishanth Menon
2015-04-11 19:40 ` Peter Hurley
2015-04-12 0:23 ` Nishanth Menon
2015-04-13 7:43 ` Sebastian Andrzej Siewior
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