On 1/17/20 3:33 AM, Peng Fan wrote:
Hi Marek,
Hi,
Subject: Re: [RFC PATCH] imx: imx8mm-evk/imx8mn-evk: enable sysreset driver for SPL
On 1/16/20 3:21 AM, Peng Fan wrote:
Hello Peng,
Subject: [RFC PATCH] imx: imx8mm-evk/imx8mn-evk: enable sysreset driver for SPL
NAK, this will not work on i.MX8MM/N.
Currently sysreset psci is enabled, however psci will not work for SPL, because SPL boots before BL31.
Thank you for the constructive feedback.
So basically , what we need is a real sysreset driver for iMX8MM , which can work with bare-bones hardware interface, that is, poking some register, correct ?
Yes.
So, either you or Claudius needs to implement a driver in drivers/sysreset, which will bind in SPL and if needed, do some writel() into some registers to reset the board, correct ?
Yes.
Because, I believe we can both agree that dumping such ad-hoc code which implements reset in board code is not the right way, esp. nowadays with all the DM/DT stuff in.
Alought we still have ocram space, but our SPL is huge now, 100KB+
How so ?
How much does DM sysreset add to that ?