linux-kernel - Re: [RESEND PATCH v2 4/8] clk: rockchip: rk3399: fix incorrect GATE bits for {c, g}pll_aclk_perihp

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Message-ID: <20160801202057.GB129313@google.com>
Date:	Mon, 1 Aug 2016 13:20:58 -0700
From:	Brian Norris <briannorris@...omium.org>
To:	Xing Zheng <zhengxing@...k-chips.com>
Cc:	heiko@...ech.de, linux-rockchip@...ts.infradead.org,
	dianders@...omium.org, huangtao@...k-chips.com,
	zhangqing@...k-chips.com,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [RESEND PATCH v2 4/8] clk: rockchip: rk3399: fix incorrect GATE
 bits for {c, g}pll_aclk_perihp_src

On Mon, Aug 01, 2016 at 05:53:39PM +0800, Xing Zheng wrote:
> Sorry to refer incorrect clock diagram, we double check it that the
> bits configuration of the Xpll_aclk_perihp_src need to be fixed:
> bit 1 - shows aclk_perihp_cpll_src_en
> bit 0 - shows aclk_perihp_gpll_src_en

Last time, you confirmed with the IC designers that we had things right.
What's different this time? Have you, for instance, done more thorough
testing, to show that the logical parent structure this driver outputs
is actually what the hardware is doing?

I think maybe this would qualify as:

Fixes: 3bd14ae9da91 ("clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src")

The above is not exactly a pure regression (we really want both
changes), but apparently it wasn't a complete fix.

> Signed-off-by: Xing Zheng <zhengxing@...k-chips.com>
> ---
> 
> Changes in v2: None

Uhh, isn't this patch brand new in v2? I don't think that means
"Changes ... None".

Brian

>  drivers/clk/rockchip/clk-rk3399.c |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/rockchip/clk-rk3399.c b/drivers/clk/rockchip/clk-rk3399.c
> index 2182391..8bf0d19 100644
> --- a/drivers/clk/rockchip/clk-rk3399.c
> +++ b/drivers/clk/rockchip/clk-rk3399.c
> @@ -833,9 +833,9 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
>  
>  	/* perihp */
>  	GATE(0, "cpll_aclk_perihp_src", "cpll", CLK_IGNORE_UNUSED,
> -			RK3399_CLKGATE_CON(5), 0, GFLAGS),
> -	GATE(0, "gpll_aclk_perihp_src", "gpll", CLK_IGNORE_UNUSED,
>  			RK3399_CLKGATE_CON(5), 1, GFLAGS),
> +	GATE(0, "gpll_aclk_perihp_src", "gpll", CLK_IGNORE_UNUSED,
> +			RK3399_CLKGATE_CON(5), 0, GFLAGS),
>  	COMPOSITE(ACLK_PERIHP, "aclk_perihp", mux_aclk_perihp_p, CLK_IGNORE_UNUSED,
>  			RK3399_CLKSEL_CON(14), 7, 1, MFLAGS, 0, 5, DFLAGS,
>  			RK3399_CLKGATE_CON(5), 2, GFLAGS),
> -- 
> 1.7.9.5
> 
>