linux-kernel - Re: [PATCH v2 1/2] clk: hi6220: Change syspll and media

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Date:	Wed, 06 Jul 2016 15:23:20 -0700
From:	Michael Turquette <mturquette@...libre.com>
To:	Guodong Xu <guodong.xu@...aro.org>, sboyd@...eaurora.org,
	jorge.ramirez-ortiz@...aro.org, xinliang.liu@...aro.org,
	guodong.xu@...aro.org, john.stultz@...aro.org
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org
Subject: Re: [PATCH v2 1/2] clk: hi6220: Change syspll and media_syspll clk to 1.19GHz

Quoting Guodong Xu (2016-06-29 01:45:54)
> From: Xinliang Liu <xinliang.liu@...aro.org>
> 
> In the bootloader of HiKey/96boards, syspll and media_syspll clk
> was initialized to 1.19GHz. So, here changes it in kernel accordingly.
> 
> 1.19GHz was chosen over 1.2GHz because at 1.19GHz we get more precise
> HDMI pixel clock (1.19G/16 = 74.4MHz) for 1280x720p@...z HDMI
> (74.25MHz required by standards). Closer pixel clock means better
> compatibility to HDMI monitors.
> 
> Signed-off-by: Guodong Xu <guodong.xu@...aro.org>
> Signed-off-by: Xinliang Liu <xinliang.liu@...aro.org>

Applied.

Regards,
Mike

> ---
>  drivers/clk/hisilicon/clk-hi6220.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/hisilicon/clk-hi6220.c b/drivers/clk/hisilicon/clk-hi6220.c
> index f02cb41..a36ffcb 100644
> --- a/drivers/clk/hisilicon/clk-hi6220.c
> +++ b/drivers/clk/hisilicon/clk-hi6220.c
> @@ -34,8 +34,8 @@ static struct hisi_fixed_rate_clock hi6220_fixed_rate_clks[] __initdata = {
>         { HI6220_PLL_BBP,       "bbppll0",      NULL, 0, 245760000, },
>         { HI6220_PLL_GPU,       "gpupll",       NULL, 0, 1000000000,},
>         { HI6220_PLL1_DDR,      "ddrpll1",      NULL, 0, 1066000000,},
> -       { HI6220_PLL_SYS,       "syspll",       NULL, 0, 1200000000,},
> -       { HI6220_PLL_SYS_MEDIA, "media_syspll", NULL, 0, 1200000000,},
> +       { HI6220_PLL_SYS,       "syspll",       NULL, 0, 1190400000,},
> +       { HI6220_PLL_SYS_MEDIA, "media_syspll", NULL, 0, 1190400000,},
>         { HI6220_DDR_SRC,       "ddr_sel_src",  NULL, 0, 1200000000,},
>         { HI6220_PLL_MEDIA,     "media_pll",    NULL, 0, 1440000000,},
>         { HI6220_PLL_DDR,       "ddrpll0",      NULL, 0, 1600000000,},
> -- 
> 1.9.1
>