From: Michal Simek <michal.simek@xilinx.com>
To: Guenter Roeck <linux@roeck-us.net>,
Michal Simek <michal.simek@xilinx.com>,
Michael Tretter <m.tretter@pengutronix.de>,
Edgar Iglesias <edgari@xilinx.com>
Cc: robh+dt@kernel.org, mark.rutland@arm.com,
devicetree@vger.kernel.org, Rajan Vaja <rajanv@xilinx.com>,
Rajan Vaja <rajan.vaja@xilinx.com>,
linux-arm-kernel@lists.infradead.org, qemu-devel@nongnu.org
Subject: Re: [PATCH 1/5] arm64: zynqmp: Add firmware DT node
Date: Mon, 9 Dec 2019 09:36:16 +0100 [thread overview]
Message-ID: <15965b09-2a53-a318-3007-5b699cb92e47@xilinx.com> (raw)
In-Reply-To: <4821742f-2d60-b722-b954-263de975bf2e@roeck-us.net>
On 09. 12. 19 8:19, Guenter Roeck wrote:
> On 12/8/19 10:42 PM, Michal Simek wrote:
>> Hi, +Edgar
>>
>>
>> On 08. 12. 19 23:38, Guenter Roeck wrote:
>>> On Fri, Oct 18, 2019 at 06:07:31PM +0200, Michael Tretter wrote:
>>>> From: Rajan Vaja <rajan.vaja@xilinx.com>
>>>>
>>>> Add firmware DT node in ZynqMP device tree. This node
>>>> uses bindings as per new firmware interface driver.
>>>>
>>>> Signed-off-by: Rajan Vaja <rajanv@xilinx.com>
>>>> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
>>>> Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
>>>
>>> With this patch applied in the mainline kernel, the qemu xlnx-zcu102
>>> emulation crashes (see below). Any idea what it might take to get
>>> qemu back to working ?
>>
>> Driver talks through ATF to PMU unit(microblaze). I don't think A53+MB
>> concept is working with mainline qemu. But crash is too hard. It should
>> be no response from PMU and then this panic.
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/firmware/xilinx/zynqmp.c?h=v5.5-rc1#n728
>>
>>
>
> Isn't that a bit harsh too ? Normally one would print an error message
> and abort driver instantiation.
Using different DT as Edgar mentioned should work but the question is
how to properly wire it up.
Edgar: What about "simply" generate that DT by qemu model based on what
implementation is available?
>
> It sounds like you are saying that qemu's xlnx-zcu102 emulation is
> no longer supported and expected to crash the kernel. Is this a
> correct assumption ? If so, I'll drop it from my list of tests.
Let's discuss this first. I definitely appreciate that you run these tests.
Thanks,
Michal
next prev parent reply other threads:[~2019-12-09 8:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 16:07 [PATCH 0/5] arm64: zynqmp: add firmware device tree node Michael Tretter
2019-10-18 16:07 ` [PATCH 1/5] arm64: zynqmp: Add firmware DT node Michael Tretter
2019-12-08 22:38 ` Guenter Roeck
2019-12-09 6:42 ` Michal Simek
2019-12-09 7:19 ` Guenter Roeck
2019-12-09 7:48 ` Edgar E. Iglesias
2019-12-09 8:33 ` Michal Simek
2019-12-09 14:32 ` Guenter Roeck
2019-12-09 15:02 ` Michal Simek
2019-12-15 5:28 ` Guenter Roeck
2019-12-16 6:28 ` Michal Simek
2019-12-09 8:36 ` Michal Simek [this message]
2019-10-18 16:07 ` [PATCH 2/5] arm64: zynqmp: Add support for zynqmp fpga manager Michael Tretter
2019-10-18 16:07 ` [PATCH 3/5] arm64: zynqmp: Label whole PL part as fpga_full region Michael Tretter
2019-10-18 16:07 ` [PATCH 4/5] arm64: zynqmp: Add support for zynqmp nvmem firmware driver Michael Tretter
2019-10-18 16:07 ` [PATCH 5/5] arm64: zynqmp: Add data cells to access efuse Michael Tretter
2019-10-23 12:30 ` Michal Simek
2019-10-23 12:30 ` [PATCH 0/5] arm64: zynqmp: add firmware device tree node Michal Simek
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