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From: | Guenter Roeck |
Subject: | Re: [PATCH 1/5] arm64: zynqmp: Add firmware DT node |
Date: | Sun, 8 Dec 2019 23:19:33 -0800 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.1 |
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 <address@hidden> Add firmware DT node in ZynqMP device tree. This node uses bindings as per new firmware interface driver. Signed-off-by: Rajan Vaja <address@hidden> Signed-off-by: Michal Simek <address@hidden> Signed-off-by: Michael Tretter <address@hidden>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. 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. Thanks, Guenter
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