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Date: Mon, 6 Jun 2016 12:51:43 +0800
From: Frank Wang <frank.wang@...k-chips.com>
To: Heiko Stübner <heiko@...ech.de>,
Guenter Roeck <linux@...ck-us.net>
Cc: dianders@...omium.org, kishon@...com, robh+dt@...nel.org,
pawel.moll@....com, mark.rutland@....com,
ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-usb@...r.kernel.org, linux-rockchip@...ts.infradead.org,
jwerner@...omium.org, xzy.xu@...k-chips.com,
huangtao@...k-chips.com, kever.yang@...k-chips.com,
william.wu@...k-chips.com, frank.wang@...k-chips.com
Subject: Re: [v2, 2/2] phy: rockchip-inno-usb2: add a new driver for Rockchip
usb2phy
Hi Heiko & Guenter,
On 2016/6/4 5:24, Heiko Stübner wrote:
> Am Freitag, 3. Juni 2016, 12:59:22 schrieb Guenter Roeck:
>> On Thu, Jun 02, 2016 at 02:48:10PM +0800, Frank Wang wrote:
>>> The newer SoCs (rk3366, rk3399) take a different usb-phy IP block
>>> than rk3288 and before, and most of phy-related registers are also
>>> different from the past, so a new phy driver is required necessarily.
>>>
>>> Signed-off-by: Frank Wang <frank.wang@...k-chips.com>
>>> ---
>>>
>>> Changes in v2:
>>> - Changed vbus_host operation from gpio to regulator in *_probe.
>>> - Improved the fault treatment relate to 480m clock register.
>>> - Cleaned up some meaningless codes in *_clk480m_disable.
>>> - made more clear the comment of *_sm_work.
>>>
>>> [...]
>>>
>>> +static struct clk *
>>> +rockchip_usb2phy_clk480m_register(struct rockchip_usb2phy *rphy)
>>> +{
>>> + struct device_node *node = rphy->dev->of_node;
>>> + struct clk *clk;
>>> + struct clk_init_data init;
>>> + int ret;
>>> +
>>> + init.name = "clk_usbphy_480m";
>>> + init.ops = &rockchip_usb2phy_clkout_ops;
>>> + init.flags = CLK_IS_ROOT;
>> One more comment:
>>
>> include/linux/clk-provider.h:#define CLK_IS_ROOT BIT(4) /*
>> Deprecated: Don't use */
>>
>> ... and the definition has been removed in linux-next.
> also, the created clock should be a child of the phy-supply clock. Please take
> a look at the picophy-variant (phy-rockchip-usb) that already handles that
> parent assignment.
>
Okay, I will refer and correct them in the next patch (patch v3) .
BR.
Frank
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