Subject: Re: 回复: [EXT] Re: [PATCH v3 01/17] mailbox: add i.MX95 Messaging Unit (MU) driver
On 1/7/25 6:01 AM, Peng Fan wrote:
On Mon, Jan 06, 2025 at 09:39:57PM +0100, Marek Vasut wrote:
On 1/6/25 6:27 AM, Alice Guo (OSS) wrote:
主题: [EXT] Re: [PATCH v3 01/17] mailbox: add i.MX95 Messaging
Unit
(MU) driver
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On 1/3/25 7:45 AM, Alice Guo wrote:
From: Peng Fan peng.fan@nxp.com
i.MX95 Messaging Unit (MU) enables 2 processors on a chip to communicate and coordinate by passing messages (e.g. frame information, event notices and requests) through the MU
interface.
This patch provides a driver for i.MX95 MU using the common mailbox framework. Currently, SCMI exchanges on i.MX95 uses a mailbox transport with SMT format, and the hardware used is
this MU.
Is this ported from Linux ? If so, as of which mainline Linux kernel
commit ?
Yes, u-boot/drivers/mailbox/imx-mailbox.c is ported v6.12.8 Linux.
Please add that information into the commit message, including the kernel version and Linux commit ID , in case this driver needs to be
updated.
Can you add older iMX SoC support while adding this driver ? It seems imx6..imx95 MU IP look very similar.
This patch-set is only for i.MX95. I can add the older iMX SoC
support in the future.
Maybe you could split off addition of the MU driver into separate series and do it for all the SoCs right away instead ?
Adding other SoCs support needs tests, but to tests other platforms, we need more work. We could not just put code here that not tested
for other SoCs. If you are already porting the MU driver for Linux, there is a good chance the support for other SoCs was already tested in Linux, so it should be safe to port it over in full to U-Boot that way ?
I will leave this to Fabio to decide, I not prefer to porting untested code in U-boot, even that works in Linux.
Thanks, Peng.