linux-kernel - Re: [PATCH] Rockchip: RK3288: CRU: swap value of bit for CORE clock pll source selection

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Date:	Fri, 05 Sep 2014 09:32:16 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	jianqun <xjq@...k-chips.com>
Cc:	mturquette@...aro.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, kever.yang@...k-chips.com,
	huangtao@...k-chips.com, zyw@...k-chips.com, yzq@...k-chips.com,
	zhenfu.fang@...k-chips.com, cf@...k-chips.com, kfx@...k-chips.com
Subject: Re: [PATCH] Rockchip: RK3288: CRU: swap value of bit for CORE clock pll source selection

Hi Jianqun,

Am Freitag, 5. September 2014, 13:49:26 schrieb jianqun:
> From: xujianqun <xjq@...k-chips.com>
> 
> For RK3288, core clock pll source select APLL when bit value is 1, select
> GPLL when bit value is 0;
> 
> CRU_CLKSEL0_CON [15]
> - core_clk_pll_sel
> - CORE clock pll source selection
> -- 1'b1: select ARM PLL
> -- 1'b0: select GENERAL PLL

your patch changes code, I haven't even submitted yet ... so I guess there is 
no need to spam maintainers and mailinglists with changes like these :-) .


> 
> BUG=none
> TEST= "cat /sys/kernel/debug/clk/clk_summary |grep apll" check parent of
> core clock
> 
> Change-Id: I44a528af256da1fad573b4ccf9d0a20ad4cf6d68

and to remember for the future, the ChromeOS, BUG, TEST and Change-Id 
shouldn't appear in commits sent upstream.


Heiko


> Signed-off-by: xujianqun <xjq@...k-chips.com>
> ---
>  drivers/clk/rockchip/clk-cpu.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/rockchip/clk-cpu.c b/drivers/clk/rockchip/clk-cpu.c
> index c5b14e9..1725ac7 100644
> --- a/drivers/clk/rockchip/clk-cpu.c
> +++ b/drivers/clk/rockchip/clk-cpu.c
> @@ -136,7 +136,7 @@ static int rockchip_cpuclk_pre_rate_change(struct
> rockchip_cpuclk *cpuclk, }
> 
>  	/* select alternate parent */
> -	writel(HIWORD_UPDATE(1, 1, reg_data->mux_core_shift),
> +	writel(HIWORD_UPDATE(0, 1, reg_data->mux_core_shift),
>  	       cpuclk->reg_base + reg_data->core_reg);
> 
>  	/* alternate parent is active now. set the dividers */
> @@ -163,7 +163,7 @@ static int rockchip_cpuclk_post_rate_change(struct
> rockchip_cpuclk *cpuclk, spin_lock(cpuclk->lock);
> 
>  	/* post-rate change event, re-mux back to primary parent */
> -	writel(HIWORD_UPDATE(0, 1, reg_data->mux_core_shift),
> +	writel(HIWORD_UPDATE(1, 1, reg_data->mux_core_shift),
>  	       cpuclk->reg_base + RK2928_CLKSEL_CON(0));
> 
>  	/* remove any core dividers */

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