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Re: [PATCH v3 13/14] clk: sunxi-ng: Add H3 clocks

From Michael Turquette <mturquette@baylibre.com>
Newsgroups linux.kernel
Subject Re: [PATCH v3 13/14] clk: sunxi-ng: Add H3 clocks
Date 2016-07-07 04:40 +0200
Message-ID <rS7ol-NG-1@gated-at.bofh.it> (permalink)
References <rPt22-85k-5@gated-at.bofh.it> <rPt22-85k-31@gated-at.bofh.it>
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Hi Maxime,

Quoting Maxime Ripard (2016-06-29 12:05:34)
> +static void __init sun8i_h3_ccu_setup(struct device_node *node)
> +{
> +       void __iomem *reg;
> +       u32 val;
> +
> +       reg = of_io_request_and_map(node, 0, of_node_full_name(node));
> +       if (IS_ERR(reg)) {
> +               pr_err("%s: Could not map the clock registers\n",
> +                      of_node_full_name(node));
> +               return;
> +       }
> +
> +       /* Force the PLL-Audio-1x divider to 4 */
> +       val = readl(reg + SUN8I_H3_PLL_AUDIO_REG);
> +       val &= ~GENMASK(4, 0);
> +       writel(val | 3, reg + SUN8I_H3_PLL_AUDIO_REG);
> +
> +       sunxi_ccu_probe(node, reg, &sun8i_h3_ccu_desc);
> +}
> +CLK_OF_DECLARE(sun8i_h3_ccu, "allwinner,sun8i-h3-ccu",
> +              sun8i_h3_ccu_setup);

There are several examples of drivers that split the clocks between
"early" CLK_OF_DECLARE clocks and "late" module clocks. If you really
need early clocks (which is less likely on a 64-bit platform with
architected timers), it would be nice to pair that with a proper
platform_driver (using builtin_platform_driver most likely).

Otherwise that is my only nitpick with this series. Looks good!

Best regards,
Mike

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Thread

[PATCH v3 00/14] clk: sunxi: introduce "modern" clock support Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-06-29 21:10 +0200
  [PATCH v3 08/14] clk: sunxi-ng: Add M-P factor clock support Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-06-29 21:10 +0200
  [PATCH v3 11/14] clk: sunxi-ng: Add N-K-M Factor clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-06-29 21:20 +0200
  [PATCH v3 12/14] clk: sunxi-ng: Add N-K-M-P factor clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-06-29 21:20 +0200
  Re: [PATCH v3 13/14] clk: sunxi-ng: Add H3 clocks Jean-Francois Moine <moinejf@free.fr> - 2016-06-30 10:40 +0200
  Re: [PATCH v3 13/14] clk: sunxi-ng: Add H3 clocks Michael Turquette <mturquette@baylibre.com> - 2016-07-07 04:40 +0200
    Re: [PATCH v3 13/14] clk: sunxi-ng: Add H3 clocks Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-07-08 23:40 +0200

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