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Re: [PATCH 1/5] arm64: zynqmp: Add firmware DT node


From: Guenter Roeck
Subject: Re: [PATCH 1/5] arm64: zynqmp: Add firmware DT node
Date: Sat, 14 Dec 2019 21:28:51 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2

On 12/9/19 7:02 AM, Michal Simek wrote:
On 09. 12. 19 15:32, Guenter Roeck wrote:
On 12/8/19 11:48 PM, Edgar E. Iglesias wrote:
On Sun, Dec 08, 2019 at 11:19:33PM -0800, 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 <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

Yes, QEMU doesn't support the Cortex-A53s along with the PMU MicroBlaze.

My workaround when using upstream QEMU is a modified DT without the
PMU firmware
and with fixed-clock nodes.


I can't do that for my boot tests. Normally I would just disable
ZYNQMP_FIRMWARE,
but that is hard enabled with ARCH_ZYNQMP. I'll have to drop those tests,
unfortunately, if the firmware driver is considered mandatory.

We can make it optional.
Rajan: please send a patch for it.


I'll disable the related boot tests for now. If/when this is fixed, let me know,
and I'll re-enable it.

Guenter



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