linux-kernel - Re: [PATCH v8 10/17] phy: Add driver for rockchip Display Port PHY

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Date:	Wed, 28 Oct 2015 21:36:56 +0100
From:	Heiko Stuebner <heiko@...ech.de>
To:	Yakir Yang <ykk@...k-chips.com>
Cc:	Inki Dae <inki.dae@...sung.com>,
	Andrzej Hajda <a.hajda@...sung.com>,
	Joonyoung Shim <jy0922.shim@...sung.com>,
	Seung-Woo Kim <sw0312.kim@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Thierry Reding <treding@...dia.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Yao <mark.yao@...k-chips.com>,
	Russell King <linux@....linux.org.uk>, djkurtz@...omium.org,
	dianders@...omium.org, Sean Paul <seanpaul@...omium.org>,
	Kukjin Kim <kgene@...nel.org>,
	Kumar Gala <galak@...eaurora.org>, emil.l.velikov@...il.com,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	Kishon Vijay Abraham I <kishon@...com>,
	Pawel Moll <pawel.moll@....com>, ajaynumb@...il.com,
	robherring2@...il.com, javier@....samsung.com,
	Andy Yan <andy.yan@...k-chips.com>,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 10/17] phy: Add driver for rockchip Display Port PHY

Hi Yakir,

Am Mittwoch, 28. Oktober 2015, 16:30:33 schrieb Yakir Yang:
> +static int rockchip_dp_phy_probe(struct platform_device *pdev)
> +{
> +	struct device *dev = &pdev->dev;
> +	struct device_node *np = dev->of_node;
> +	struct phy_provider *phy_provider;
> +	struct rockchip_dp_phy *dp;
> +	struct resource *res;

drivers/phy/phy-rockchip-dp.c: In function 'rockchip_dp_phy_probe':
drivers/phy/phy-rockchip-dp.c:86:19: warning: unused variable 'res' [-Wunused-variable]

> +	struct phy *phy;
> +	int ret;
> +
> +	if (!np)
> +		return -ENODEV;
> +
> +	dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
> +	if (IS_ERR(dp))
> +		return -ENOMEM;
> +
> +	dp->dev = dev;
> +
> +	dp->phy_24m = devm_clk_get(dev, "24m");
> +	if (IS_ERR(dp->phy_24m)) {
> +		dev_err(dev, "cannot get clock 24m\n");
> +		return PTR_ERR(dp->phy_24m);
> +	}
> +
> +	ret = clk_set_rate(dp->phy_24m, 24000000);
> +	if (ret < 0) {
> +		dev_err(dp->dev, "cannot set clock phy_24m %d\n", ret);
> +		return ret;
> +	}
> +

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