Re: [PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem
From: Mark Brown <broonie@kernel.org>
Date: 2020-02-20 19:51:26
Also in:
linux-devicetree, linux-mediatek, linux-spi, lkml
On Thu, Feb 20, 2020 at 07:58:06AM +0800, Chuanhong Guo wrote:
On Tue, Feb 18, 2020 at 8:55 PM Mark Brown [off-list ref] wrote:
quoted
This is an ABI break so you shouldn't be doing this, if the existing binding works it should continue to work.
The missing spi-max-frequency is the only part preventing old device tree to work with this driver. If the goal is to make existing dt binding work, I could patch dt using of_add_property in v2. I saw similar device tree patching for legacy bindings in pinctrl-single driver.
That's fine I think, so long as old DTs continue to work.