linux-kernel - Re: [PATCH 0/5] clk: imx: fix bus critical clk registration

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Date:   Wed, 21 Oct 2020 13:39:54 +0300
From:   Abel Vesa <abel.vesa@....com>
To:     peng.fan@....com
Cc:     sboyd@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        festevam@...il.com, kernel@...gutronix.de, linux-imx@....com,
        Anson.Huang@....com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        aisheng.dong@....com
Subject: Re: [PATCH 0/5] clk: imx: fix bus critical clk registration

On 20-10-21 16:31:29, peng.fan@....com wrote:
> From: Peng Fan <peng.fan@....com>
> 
> The issue is exposed by
> https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/
> linux.git/commit/?h=for-next&id=936c383673b9e3007432f17140ac62de53d87db9
> 
> Since the upper patch not in Linus tree, I not add Fixed tag.
> 
> The issue is bus clk should be registered using bus composite api, not
> peripheral api. Otherwise we will met failed to assigned clock parents error log.
> Because peripheral critical clk has CLK_SET_PARENT_GATE and CLK_IS_CRITICAL,
> you will not able to set clk parents.
> 
> We need use bus critical clk api to register the clks, so introduce
> a new helper and use it.
> 

I already had this change in the devfreq+icc tree.

Thanks for speeding up this work.

After our discussion yesterday, there is a further change needed for the bus
clocks and that is the 'right' to reparent on rate change. I'll probably send
that myself.

For this entire series:

Reviewed-by: Abel Vesa <abel.vesa@....com>

> Peng Fan (5):
>   clk: imx: add imx8m_clk_hw_composite_bus_critical
>   clk: imx8mq: fix noc and noc_io registration
>   clk: imx8mm: fix bus critical clk registration
>   clk: imx8mn: fix bus critical clk registration
>   clk: imx8mp: fix bus critical clk registration
> 
>  drivers/clk/imx/clk-imx8mm.c | 10 +++++-----
>  drivers/clk/imx/clk-imx8mn.c |  6 +++---
>  drivers/clk/imx/clk-imx8mp.c | 10 +++++-----
>  drivers/clk/imx/clk-imx8mq.c |  8 ++++----
>  drivers/clk/imx/clk.h        |  5 +++++
>  5 files changed, 22 insertions(+), 17 deletions(-)
> 
> -- 
> 2.28.0
>