linux-kernel - Re: [PATCH 0/2] clk: imx: Make the dram_apb and dram

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Message-ID: <20201021143547.bxil5fafurwub56d@fsr-ub1664-175>
Date:   Wed, 21 Oct 2020 17:35:47 +0300
From:   Abel Vesa <abel.vesa@....com>
To:     Shawn Guo <shawnguo@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        Peng Fan <peng.fan@....com>,
        Dong Aisheng <aisheng.dong@....com>,
        Anson Huang <anson.huang@....com>
Cc:     NXP Linux Team <linux-imx@....com>, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] clk: imx: Make the dram_apb and dram_alt as read-only

On 20-10-21 15:40:41, Abel Vesa wrote:
> On i.MX8M platforms the dram_apb and dram_alt are controlled from EL3.
> So in order to keep track of the actual clock tree in kernel, we need
> to actually declare the clocks but never actually change their parents
> or divider settings. We do that by marking the mux and the div as read-only
> with CLK_DIVIDER_READ_ONLY and CLK_MUX_READ_ONLY flags.
> 

Ignore this patchset entirely. A lot of things are missing for this approach.

> Abel Vesa (2):
>   clk: imx: composite-8m: Add DRAM clock registration variant
>   clk: imx8m: Use dram variant registration for dram clocks
> 
>  drivers/clk/imx/clk-composite-8m.c | 7 +++++++
>  drivers/clk/imx/clk-imx8mm.c       | 4 ++--
>  drivers/clk/imx/clk-imx8mn.c       | 4 ++--
>  drivers/clk/imx/clk-imx8mp.c       | 4 ++--
>  drivers/clk/imx/clk-imx8mq.c       | 4 ++--
>  drivers/clk/imx/clk.h              | 6 ++++++
>  6 files changed, 21 insertions(+), 8 deletions(-)
> 
> -- 
> 2.7.4
>