linux-kernel - Re: [PATCH 4/5] clk: mediatek: add 13mhz clock for MT8173

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Date:	Tue, 14 Jul 2015 15:34:10 +0800
From:	Daniel Kurtz <djkurtz@...omium.org>
To:	Yingjoe Chen <yingjoe.chen@...iatek.com>
Cc:	Matthias Brugger <matthias.bgg@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Michael Turquette <mturquette@...libre.com>,
	James Liao <jamesjj.liao@...iatek.com>,
	Russell King <linux@....linux.org.uk>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	linux-mediatek@...ts.infradead.org,
	Sascha Hauer <kernel@...gutronix.de>,
	Olof Johansson <olof@...om.net>,
	srv_heupstream <srv_heupstream@...iatek.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, linux-clk@...r.kernel.org
Subject: Re: [PATCH 4/5] clk: mediatek: add 13mhz clock for MT8173

On Mon, Jul 13, 2015 at 5:32 PM, Yingjoe Chen <yingjoe.chen@...iatek.com> wrote:
> Add 13mhz clock used by GPT timer in infracfg.
>
> Signed-off-by: Yingjoe Chen <yingjoe.chen@...iatek.com>
> ---
>  drivers/clk/mediatek/clk-mt8173.c      | 5 +++++
>  include/dt-bindings/clock/mt8173-clk.h | 3 ++-
>  2 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clk/mediatek/clk-mt8173.c b/drivers/clk/mediatek/clk-mt8173.c
> index 4b9e04c..540c5c3 100644
> --- a/drivers/clk/mediatek/clk-mt8173.c
> +++ b/drivers/clk/mediatek/clk-mt8173.c
> @@ -618,6 +618,10 @@ static const struct mtk_gate infra_clks[] __initconst = {
>         GATE_ICG(CLK_INFRA_PMICWRAP, "infra_pmicwrap", "axi_sel", 23),
>  };
>
> +static const struct mtk_fixed_factor infra_divs[] __initconst = {
> +       FACTOR(CLK_INFRA_CLK_13M, "clk13m", "clk26m", 1, 2),
> +};
> +
>  static const struct mtk_gate_regs peri0_cg_regs = {
>         .set_ofs = 0x0008,
>         .clr_ofs = 0x0010,
> @@ -737,6 +741,7 @@ static void __init mtk_infrasys_init(struct device_node *node)
>
>         mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks),
>                                                 clk_data);
> +       mtk_clk_register_factors(infra_divs, ARRAY_SIZE(infra_divs), clk_data);
>
>         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
>         if (r)
> diff --git a/include/dt-bindings/clock/mt8173-clk.h b/include/dt-bindings/clock/mt8173-clk.h
> index 4ad76ed..fa2a2bb 100644
> --- a/include/dt-bindings/clock/mt8173-clk.h
> +++ b/include/dt-bindings/clock/mt8173-clk.h
> @@ -187,7 +187,8 @@
>  #define CLK_INFRA_CEC                  9
>  #define CLK_INFRA_PMICSPI              10
>  #define CLK_INFRA_PMICWRAP             11
> -#define CLK_INFRA_NR_CLK               12
> +#define CLK_INFRA_CLK_13M              12
> +#define CLK_INFRA_NR_CLK               13

Note: this one conflicts slightly with pi-cheng's patch that adds CPU
mux clocks for cpufreq driver, since they both add more INFRA clocks:
https://patchwork.kernel.org/patch/6721511/

>
>  /* PERI_SYS */
>
> --
> 1.8.1.1.dirty
>
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