Re: [PATCH 10/18] clk: imx: Remove CLK_SET_PARENT_GATE for DRAM mux for i.MX7D

[Francesco Dolcini]

Hello Peng,

On Sat, May 04, 2024 at 08:49:03AM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@xxxxxxx>
> 
> For i.MX7D DRAM related mux clock, the clock source change should ONLY
> be done done in low level asm code without accessing DRAM, and then
> calling clk API to sync the HW clock status with clk tree, it should never
> touch real clock source switch via clk API, so CLK_SET_PARENT_GATE flag
> should NOT be added, otherwise, DRAM's clock parent will be disabled when
> DRAM is active, and system will hang.

>From the description this is solving a system hang, but no fixes tag nor
cc stable.

Francesco