Re: [PATCH] net: fec: dt: convert phy-reset-gpios to use GPIOD API
From: George G. Davis <hidden>
Date: 2016-05-31 18:33:08
Also in:
linux-gpio, lkml, netdev
Hello Russell, On Tue, May 31, 2016 at 07:26:42PM +0100, Russell King - ARM Linux wrote:
On Tue, May 31, 2016 at 02:24:50PM -0400, George G. Davis wrote:quoted
Hello Fabio, On Tue, May 31, 2016 at 02:26:54PM -0300, Fabio Estevam wrote:quoted
On Tue, May 31, 2016 at 2:17 PM, George G. Davis [off-list ref] wrote:quoted
Convert the i.MX FEC driver and DT files to use the GPIOD API which automatically handles GPIO polarity. Signed-off-by: George G. Davis <redacted>In order to avoid breaking old dtb's a property called 'phy-reset-active-high' has been introduced. Check: 962d8cdc3133435a ("net: fec: Rename "phy-reset-active-low" property") and 64f10f6ebf5a6d3ae ("net: fec: Add "phy-reset-active-low" property to DT").The GPIOD API handles GPIO active assertion levels as defined by the DT binding. So the phy-reset-active-high and/or phy-reset-active-low property is not needed when using the GPIOD API - just define GPIO_ACTIVE_LOW or GPIO_ACTIVE_HIGH as required for the board and the GPIOD API will handle active assert/deassert level as needed.You must retain compatibility with _existing_ DT files. Hence, while you can convert to using the gpiod API, you still need to be compatible with the old way of specifying this - iow, you must support the old properties in the code.
Sigh, thanks for the ClueBat. Got it. I'll rework the patch to retain compatibility with existing DT files. -- Regards, George