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Sun, 08 Dec 2019 23:19:34 -0800 (PST) Subject: Re: [PATCH 1/5] arm64: zynqmp: Add firmware DT node To: Michal Simek , Michael Tretter , Edgar Iglesias References: <20191018160735.15658-1-m.tretter@pengutronix.de> <20191018160735.15658-2-m.tretter@pengutronix.de> <20191208223814.GA21260@roeck-us.net> From: Guenter Roeck Message-ID: <4821742f-2d60-b722-b954-263de975bf2e@roeck-us.net> 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 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191208_231937_395236_9840B7BE X-CRM114-Status: GOOD ( 14.53 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, Rajan Vaja , qemu-devel@nongnu.org, Rajan Vaja , robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 >>> >>> Add firmware DT node in ZynqMP device tree. This node >>> uses bindings as per new firmware interface driver. >>> >>> Signed-off-by: Rajan Vaja >>> Signed-off-by: Michal Simek >>> Signed-off-by: Michael Tretter >> >> 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel