linux-kernel - Re: [PATCH v4 6/9] clk: sunxi-ng: Add A64 clocks

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Message-ID: <20161020184601.GB26139@codeaurora.org>
Date:   Thu, 20 Oct 2016 11:46:01 -0700
From:   Stephen Boyd <sboyd@...eaurora.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Mike Turquette <mturquette@...libre.com>,
        Chen-Yu Tsai <wens@...e.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-sunxi@...glegroups.com,
        Andre Przywara <andre.przywara@....com>
Subject: Re: [PATCH v4 6/9] clk: sunxi-ng: Add A64 clocks

On 10/11, Maxime Ripard wrote:
> diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
> new file mode 100644
> index 000000000000..c0e96bf6d104
> --- /dev/null
> +++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c
> +
> +static int sun50i_a64_ccu_probe(struct platform_device *pdev)
> +{
> +	struct resource *res;
> +	void __iomem *reg;
> +	u32 val;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	reg = devm_ioremap_resource(&pdev->dev, res);
> +	if (IS_ERR(reg)) {
> +		dev_err(&pdev->dev, "Could not map the clock registers\n");

devm_ioremap_resource() should already spit out an error.

> +		return PTR_ERR(reg);
> +	}
> +
> +	/* Force the PLL-Audio-1x divider to 4 */
> +	val = readl(reg + SUN50I_A64_PLL_AUDIO_REG);
> +	val &= ~GENMASK(19, 16);
> +	writel(val | (3 << 16), reg + SUN50I_A64_PLL_AUDIO_REG);
> +
> +	writel(0x515, reg + SUN50I_A64_PLL_MIPI_REG);
> +
> +	return sunxi_ccu_probe(pdev->dev.of_node, reg, &sun50i_a64_ccu_desc);
> +}
> +
> +static const struct of_device_id sun50i_a64_ccu_ids[] = {
> +	{ .compatible = "allwinner,sun50i-a64-ccu" },
> +	{ },

Nitpick: drop the comma

> +};
> +
> +static struct platform_driver sun50i_a64_ccu_driver = {
> +	.probe	= sun50i_a64_ccu_probe,
> +	.driver	= {
> +		.name	= "sun50i-a64-ccu",
> +		.of_match_table	= sun50i_a64_ccu_ids,
> +	},
> +};
> +builtin_platform_driver(sun50i_a64_ccu_driver);

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