linux-kernel - Re: [PATCH] clk: qcom: Remove need for clk_ignore

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Date:   Fri, 13 Jan 2023 14:14:30 -0600
From:   Andrew Halaney <ahalaney@...hat.com>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Abel Vesa <abel.vesa@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: qcom: Remove need for clk_ignore_unused on sc8280xp

On Thu, Jan 12, 2023 at 08:10:38PM -0800, Bjorn Andersson wrote:
> With the transition of disabling unused clocks at sync_state, rather
> than late_initcall() it's now possible to drop clk_ignore_unused and
> unused clock disabled once client drivers have probed. Do this on
> SC8280XP.
> 
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>

Tested-by: Andrew Halaney <ahalaney@...hat.com> # sc8280xp-lenovo-thinkpad-x13s

I've booted with this (and without clk_ignore_unused) a few times today
and have been working with on the machine without any apparent issues.

Thanks! It is nice to have to modify less of the kernel cli to boot.

> ---
>  drivers/clk/qcom/dispcc-sc8280xp.c | 1 +
>  drivers/clk/qcom/gcc-sc8280xp.c    | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/drivers/clk/qcom/dispcc-sc8280xp.c b/drivers/clk/qcom/dispcc-sc8280xp.c
> index 167470beb369..c84a6481b879 100644
> --- a/drivers/clk/qcom/dispcc-sc8280xp.c
> +++ b/drivers/clk/qcom/dispcc-sc8280xp.c
> @@ -3199,6 +3199,7 @@ static struct platform_driver disp_cc_sc8280xp_driver = {
>  	.driver = {
>  		.name = "disp_cc-sc8280xp",
>  		.of_match_table = disp_cc_sc8280xp_match_table,
> +		.sync_state = clk_sync_state_disable_unused,
>  	},
>  };
>  
> diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280xp.c
> index b3198784e1c3..f4fdc5b9663c 100644
> --- a/drivers/clk/qcom/gcc-sc8280xp.c
> +++ b/drivers/clk/qcom/gcc-sc8280xp.c
> @@ -7441,6 +7441,7 @@ static struct platform_driver gcc_sc8280xp_driver = {
>  	.driver = {
>  		.name = "gcc-sc8280xp",
>  		.of_match_table = gcc_sc8280xp_match_table,
> +		.sync_state = clk_sync_state_disable_unused,
>  	},
>  };
>  
> -- 
> 2.37.3
>