Re: [PATCH V1 04/10] watchdog: da9061: watchdog driver (RFC)
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date: 2016-10-07 23:36:10
Also in:
linux-devicetree, linux-pm, linux-watchdog, lkml
On Fri, Oct 07, 2016 at 06:01:23PM +0000, Steve Twiss wrote:
On 07 October 2016 18:02, Guenter Roeck wrote:quoted
quoted
On 06 October 2016 19:49, Guenter Roeck wrote:quoted
On Thu, Oct 06, 2016 at 04:28:14PM +0000, Steve Twiss wrote:quoted
I am using the compatible string to pick a different configuration .data block: { .compatible = "dlg,da9062-watchdog", .data = &da9062_watchdog_info }, { .compatible = "dlg,da9061-watchdog", .data = &da9061_watchdog_info }, But, it is just my opinion to keep the "name" different. This will not be my decision if accepted into the Linux kernel, but I would like to at least be consistent for DA9061 and DA9062 so ... is this an issue?FWIW the driver doesn't really need to be updated in the first place. A compatible statement listing both da9061 and da9062 would do it.I will make the changes you requested: deprecate the existing compatibility for da9062-watchdog and make a new compatibility string which combines both da9061 and da9062.That is not what I asked for.Ok. Did you mean separate compatible statements with data sections pointing at the same structure? Like this: { .compatible = "dlg,da9062-watchdog", .data = &da9062_watchdog_info }, { .compatible = "dlg,da9061-watchdog", .data = &da9062_watchdog_info }, So this would be the only change needed in the device driver.
If there is no change in IP block then I do not see why we need to introduce new names at all. The dts can specify fallback compatible stting. Note, it is called *compatible* not "model" or "device id" or whatever. So you can just say in DTS: compatible = "dlg,da9061-watchdog", "dlg,da9062-watchdog"; and leave the driver alone. That goes for input part as well. You only need to add new compatible to the driver when it in fact is *incompatible* with the existing blocks. Thanks. -- Dmitry