Re: [PATCH 0/7] ARM: berlin: refactor the clock
From: Andrew Lunn
Date: Fri Feb 13 2015 - 12:34:20 EST
On Fri, Feb 13, 2015 at 05:42:54PM +0100, Antoine Tenart wrote:
> Marvell Berlin SoCs have a chip control register set providing several
> individual registers dealing with various controllers (pinctrl, reset,
> clk). This chip controller is described by a single DT node since the
> individual registers are spread among the chip control register bank.
> Marvell Berlin also have a system control register set providing several
> individual registers for pinctrl or adc.
> A series was sent to correctly handle these two nodes, by introducing
> a Berlin mfd controller driver. The series converted the existing
> pin-controller and reset drivers to take the changes into account.
Something which needs to be discussed for both this patchset and the
previous one, is backwards compatibility of the device tree.
As far as i can see, these changes are not backwards compatible.
Somebody trying to boot a new kernel with a old DT blob is going to
How do we want to handle this?
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