From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: John Garry <john.garry@huawei.com>,
Jon Masters <jcm@jonmasters.org>, Arnd Bergmann <arnd@arndb.de>,
linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com,
gabriele.paoloni@huawei.com, minyard@acm.org,
gregkh@linuxfoundation.org, zhichang.yuan02@gmail.com,
will.deacon@arm.com, linux-kernel@vger.kernel.org,
"zhichang.yuan" <yuanzhichang@hisilicon.com>,
linuxarm@huawei.com, xuwei5@hisilicon.com,
linux-serial@vger.kernel.org, linux-pci@vger.kernel.org,
zourongrong@gmail.com, liviu.dudau@arm.com, kantyzc@163.com
Subject: Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06
Date: Thu, 06 Oct 2016 11:18:32 +1100 [thread overview]
Message-ID: <1475713112.3784.183.camel@kernel.crashing.org> (raw)
In-Reply-To: <6bbfeb57-7a55-6a3e-60b2-3f44525e5882@huawei.com>
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WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: John Garry <john.garry@huawei.com>,
Jon Masters <jcm@jonmasters.org>, Arnd Bergmann <arnd@arndb.de>,
linux-arm-kernel@lists.infradead.org
Cc: "zhichang.yuan" <yuanzhichang@hisilicon.com>,
devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com,
gabriele.paoloni@huawei.com, minyard@acm.org,
gregkh@linuxfoundation.org, will.deacon@arm.com,
linux-kernel@vger.kernel.org, xuwei5@hisilicon.com,
linuxarm@huawei.com, linux-serial@vger.kernel.org,
linux-pci@vger.kernel.org, zourongrong@gmail.com,
liviu.dudau@arm.com, kantyzc@163.com, zhichang.yuan02@gmail.com
Subject: Re: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06
Date: Thu, 06 Oct 2016 11:18:32 +1100 [thread overview]
Message-ID: <1475713112.3784.183.camel@kernel.crashing.org> (raw)
In-Reply-To: <6bbfeb57-7a55-6a3e-60b2-3f44525e5882@huawei.com>
On Tue, 2016-10-04 at 13:02 +0100, John Garry wrote:
> Right, so I think Zhichang can make the necessary generic changes to
> 8250 OF driver to support IO port as well as MMIO-based.
>
> However an LPC-based earlycon driver is still required.
>
> A note on hip07-based D05 (for those unaware): this does not use
> LPC-based uart. It uses PL011. The hardware guys have managed some
> trickery where they loopback the serial line around the BMC/CPLD. But we
> still need it for hip06 D03 and any other boards which want to use LPC
> bus for uart.
>
> A question on SBSA: does it propose how to provide serial via BMC for SOL?
Probably another reason to keep 8250 as a legal option ... The (very
popular) Aspeed BMCs tend to do this via a 8250-looking virtual UART on
LPC.
Cheers,
Ben,
WARNING: multiple messages have this Message-ID (diff)
From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06
Date: Thu, 06 Oct 2016 11:18:32 +1100 [thread overview]
Message-ID: <1475713112.3784.183.camel@kernel.crashing.org> (raw)
In-Reply-To: <6bbfeb57-7a55-6a3e-60b2-3f44525e5882@huawei.com>
On Tue, 2016-10-04 at 13:02 +0100, John Garry wrote:
> Right, so I think Zhichang can make the necessary generic changes to?
> 8250 OF driver to support IO port as well as MMIO-based.
>
> However an LPC-based earlycon driver is still required.
>
> A note on hip07-based D05 (for those unaware): this does not use?
> LPC-based uart. It uses PL011. The hardware guys have managed some?
> trickery where they loopback the serial line around the BMC/CPLD. But we?
> still need it for hip06 D03 and any other boards which want to use LPC?
> bus for uart.
>
> A question on SBSA: does it propose how to provide serial via BMC for SOL?
Probably another reason to keep 8250 as a legal option ... The (very
popular) Aspeed BMCs tend to do this via a 8250-looking virtual UART on
LPC.
Cheers,
Ben,
next prev parent reply other threads:[~2016-10-06 0:18 UTC|newest]
Thread overview: 149+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-14 12:15 [PATCH V3 0/4] ARM64 LPC: legacy ISA I/O support Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:15 ` [PATCH V3 1/4] ARM64 LPC: Indirect ISA port IO introduced Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:24 ` Arnd Bergmann
2016-09-14 12:24 ` Arnd Bergmann
2016-09-14 14:16 ` zhichang.yuan
2016-09-14 14:16 ` zhichang.yuan
2016-09-14 14:16 ` zhichang.yuan
2016-09-14 14:23 ` Arnd Bergmann
2016-09-14 14:23 ` Arnd Bergmann
2016-09-14 14:23 ` Arnd Bergmann
2016-09-18 3:38 ` zhichang
2016-09-18 3:38 ` zhichang
2016-09-18 3:38 ` zhichang
2016-09-21 9:26 ` zhichang
2016-09-21 9:26 ` zhichang
2016-09-21 9:26 ` zhichang
2016-09-14 12:15 ` [PATCH V3 2/4] ARM64 LPC: LPC driver implementation on Hip06 Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:33 ` Arnd Bergmann
2016-09-14 12:33 ` Arnd Bergmann
2016-09-14 14:50 ` zhichang.yuan
2016-09-14 14:50 ` zhichang.yuan
2016-09-14 14:50 ` zhichang.yuan
2016-09-14 21:32 ` Arnd Bergmann
2016-09-14 21:32 ` Arnd Bergmann
2016-09-15 8:02 ` Gabriele Paoloni
2016-09-15 8:02 ` Gabriele Paoloni
2016-09-15 8:02 ` Gabriele Paoloni
2016-09-15 8:02 ` Gabriele Paoloni
2016-09-15 8:22 ` Arnd Bergmann
2016-09-15 8:22 ` Arnd Bergmann
2016-09-15 8:22 ` Arnd Bergmann
2016-09-15 12:05 ` Gabriele Paoloni
2016-09-15 12:05 ` Gabriele Paoloni
2016-09-15 12:05 ` Gabriele Paoloni
2016-09-15 12:24 ` Arnd Bergmann
2016-09-15 12:24 ` Arnd Bergmann
2016-09-15 12:24 ` Arnd Bergmann
2016-09-15 14:28 ` Gabriele Paoloni
2016-09-15 14:28 ` Gabriele Paoloni
2016-09-15 14:28 ` Gabriele Paoloni
2016-09-21 10:09 ` zhichang
2016-09-21 10:09 ` zhichang
2016-09-21 10:09 ` zhichang
2016-09-21 16:20 ` Gabriele Paoloni
2016-09-21 16:20 ` Gabriele Paoloni
2016-09-21 16:20 ` Gabriele Paoloni
2016-09-21 16:20 ` Gabriele Paoloni
2016-09-21 20:18 ` Arnd Bergmann
2016-09-21 20:18 ` Arnd Bergmann
2016-09-21 20:18 ` Arnd Bergmann
2016-09-21 20:18 ` Arnd Bergmann
2016-09-22 11:55 ` Gabriele Paoloni
2016-09-22 11:55 ` Gabriele Paoloni
2016-09-22 11:55 ` Gabriele Paoloni
2016-09-22 11:55 ` Gabriele Paoloni
2016-09-22 12:14 ` Arnd Bergmann
2016-09-22 12:14 ` Arnd Bergmann
2016-09-22 12:14 ` Arnd Bergmann
2016-09-22 12:14 ` Arnd Bergmann
2016-09-22 14:47 ` Gabriele Paoloni
2016-09-22 14:47 ` Gabriele Paoloni
2016-09-22 14:47 ` Gabriele Paoloni
2016-09-22 14:59 ` Arnd Bergmann
2016-09-22 14:59 ` Arnd Bergmann
2016-09-22 14:59 ` Arnd Bergmann
2016-09-22 15:20 ` Gabriele Paoloni
2016-09-22 15:20 ` Gabriele Paoloni
2016-09-22 15:20 ` Gabriele Paoloni
2016-09-22 15:46 ` zhichang.yuan
2016-09-22 15:46 ` zhichang.yuan
2016-09-22 15:46 ` zhichang.yuan
2016-09-22 16:27 ` zhichang.yuan
2016-09-22 16:27 ` zhichang.yuan
2016-09-22 16:27 ` zhichang.yuan
2016-09-22 16:27 ` zhichang.yuan
2016-09-23 9:51 ` Arnd Bergmann
2016-09-23 9:51 ` Arnd Bergmann
2016-09-23 9:51 ` Arnd Bergmann
2016-09-23 9:51 ` Arnd Bergmann
2016-09-23 10:23 ` Gabriele Paoloni
2016-09-23 10:23 ` Gabriele Paoloni
2016-09-23 10:23 ` Gabriele Paoloni
2016-09-23 13:42 ` Arnd Bergmann
2016-09-23 13:42 ` Arnd Bergmann
2016-09-23 13:42 ` Arnd Bergmann
2016-09-23 14:59 ` Gabriele Paoloni
2016-09-23 14:59 ` Gabriele Paoloni
2016-09-23 14:59 ` Gabriele Paoloni
2016-09-23 15:55 ` Arnd Bergmann
2016-09-23 15:55 ` Arnd Bergmann
2016-09-23 15:55 ` Arnd Bergmann
2016-09-23 15:55 ` Arnd Bergmann
2016-09-24 8:14 ` zhichang
2016-09-24 8:14 ` zhichang
2016-09-24 8:14 ` zhichang
2016-09-24 21:00 ` Arnd Bergmann
2016-09-24 21:00 ` Arnd Bergmann
2016-09-24 21:00 ` Arnd Bergmann
2016-09-24 21:00 ` Arnd Bergmann
2016-09-26 13:21 ` Gabriele Paoloni
2016-09-26 13:21 ` Gabriele Paoloni
2016-09-26 13:21 ` Gabriele Paoloni
2016-09-26 13:21 ` Gabriele Paoloni
2016-09-24 8:00 ` zhichang
2016-09-24 8:00 ` zhichang
2016-09-24 8:00 ` zhichang
2016-09-24 8:00 ` zhichang
2016-10-02 22:03 ` Jon Masters
2016-10-02 22:03 ` Jon Masters
2016-10-02 22:03 ` Jon Masters
2016-10-02 22:03 ` Jon Masters
2016-10-04 12:02 ` John Garry
2016-10-04 12:02 ` John Garry
2016-10-04 12:02 ` John Garry
2016-10-06 0:18 ` Benjamin Herrenschmidt [this message]
2016-10-06 0:18 ` Benjamin Herrenschmidt
2016-10-06 0:18 ` Benjamin Herrenschmidt
2016-10-06 13:31 ` John Garry
2016-10-06 13:31 ` John Garry
2016-10-06 13:31 ` John Garry
2016-09-14 14:09 ` kbuild test robot
2016-09-14 14:09 ` kbuild test robot
2016-09-14 14:09 ` kbuild test robot
2016-09-14 12:15 ` [PATCH V3 3/4] ARM64 LPC: support serial based on low-pin-count Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:25 ` Arnd Bergmann
2016-09-14 12:25 ` Arnd Bergmann
2016-09-14 12:25 ` Arnd Bergmann
2016-09-14 15:04 ` zhichang.yuan
2016-09-14 15:04 ` zhichang.yuan
2016-09-14 15:04 ` zhichang.yuan
2016-09-14 21:33 ` Arnd Bergmann
2016-09-14 21:33 ` Arnd Bergmann
2016-09-21 10:12 ` zhichang
2016-09-21 10:12 ` zhichang
2016-09-21 10:12 ` zhichang
2016-09-21 19:29 ` Arnd Bergmann
2016-09-21 19:29 ` Arnd Bergmann
2016-09-21 19:29 ` Arnd Bergmann
2016-09-14 12:15 ` [PATCH V3 4/4] ARM64 LPC: support earlycon for UART connected to LPC Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
2016-09-14 12:15 ` Zhichang Yuan
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