linux-kernel - Re: [PATCH] clk: rockchip: add CLK_IGNORE_UNUSED to RK3188 sclk_mac

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Message-ID: <3075813.JVNIx54Eim@diego>
Date:   Wed, 22 Jul 2020 16:37:21 +0200
From:   Heiko Stübner <heiko@...ech.de>
To:     Alex Bee <knaerzche@...il.com>
Cc:     linux-rockchip@...ts.infradead.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clk: rockchip: add CLK_IGNORE_UNUSED to RK3188 sclk_mac_lbtest

Hi,

Am Mittwoch, 22. Juli 2020, 16:31:37 CEST schrieb Alex Bee:
> Since the loopbacktest clock is not exported and is not touched in the
> driver, it needs the CLK_IGNORE_UNUSED flag in order to get the emac
> working.

could you please add it to the rk3188_critical_clocks array instead.
CLK_IGNORE_UNUSED only protects it against the clock subsystem
disabling it on boot, while as critical clock it also gets protected later.

Thanks
Heiko


> 
> Signed-off-by: Alex Bee <knaerzche@...il.com>
> ---
>  drivers/clk/rockchip/clk-rk3188.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c
> index 77aebfb1d6d5..892b1edc3444 100644
> --- a/drivers/clk/rockchip/clk-rk3188.c
> +++ b/drivers/clk/rockchip/clk-rk3188.c
> @@ -354,7 +354,7 @@ static struct rockchip_clk_branch common_clk_branches[] __initdata = {
>  			RK2928_CLKGATE_CON(2), 5, GFLAGS),
>  	MUX(SCLK_MAC, "sclk_macref", mux_sclk_macref_p, CLK_SET_RATE_PARENT,
>  			RK2928_CLKSEL_CON(21), 4, 1, MFLAGS),
> -	GATE(0, "sclk_mac_lbtest", "sclk_macref", 0,
> +	GATE(0, "sclk_mac_lbtest", "sclk_macref", CLK_IGNORE_UNUSED,
>  			RK2928_CLKGATE_CON(2), 12, GFLAGS),
>  
>  	COMPOSITE(0, "hsadc_src", mux_pll_src_gpll_cpll_p, 0,
>