From: Kishon Vijay Abraham I <kishon@ti.com>
To: Pratyush Anand <pratyush.anand@st.com>
Cc: Arnd Bergmann <arnd@arndb.de>, Mohit Kumar <mohit.kumar@st.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: Query: Phy: How to find consumer device on dt platform
Date: Tue, 28 Jan 2014 19:58:33 +0530 [thread overview]
Message-ID: <52E7BE91.8030209@ti.com> (raw)
In-Reply-To: <20140128141356.GC3519@pratyush-vbox>
Hi,
On Tuesday 28 January 2014 07:43 PM, Pratyush Anand wrote:
> Hi Kishon,
>
> I have a phy driver which has to be used by two different consumer
> driver, say pcie and sata.
I assume you have multiple instances of the same IP and you have a single
driver for it?
>
> I have a common set of registers, which need to be programmed
> differently for PCIe and SATA during phy init/exit.
One way is differentiate using different compatible strings fro pcie and sata
and use of_device_is_compatible to select a particular path.
>
> Therefore, in the init/exit routine of phy_ops, I need some way of
> identifying that phy_init/exit has been called from PCIe driver or
> SATA driver.
In this case you'll be actually registering two different PHYs (each for pcie
and sata), so your phy_get should give you the only the appropriate phy.
Cheers
Kishon
next prev parent reply other threads:[~2014-01-28 14:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 14:13 Query: Phy: How to find consumer device on dt platform Pratyush Anand
2014-01-28 14:28 ` Kishon Vijay Abraham I [this message]
2014-01-28 21:26 ` Arnd Bergmann
2014-01-29 5:41 ` Kishon Vijay Abraham I
2014-01-29 9:50 ` Pratyush Anand
2014-01-29 14:24 ` Arnd Bergmann
2014-01-29 14:17 ` Pratyush Anand
2014-01-29 13:39 ` Arnd Bergmann
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