linux-kernel - Re: [PATCH v3] bus: imx-weim: add DT overlay support for WEIM bus

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Message-ID: <20220222065531.GY2249@dragon>
Date:   Tue, 22 Feb 2022 14:55:31 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Ivan Bornyakov <i.bornyakov@...rotek.ru>
Cc:     s.hauer@...gutronix.de, festevam@...il.com, kernel@...gutronix.de,
        linux-imx@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, system@...rotek.ru
Subject: Re: [PATCH v3] bus: imx-weim: add DT overlay support for WEIM bus

On Tue, Feb 22, 2022 at 08:20:59AM +0300, Ivan Bornyakov wrote:
> Add OF reconfiguration notifier handler for WEIM bus to setup Chip
> Select timings on runtime creation of child devices.
> 
> However, it is not possible to load another DT overlay with conflicting
> CS timings with previously loaded overlay, even if the first one is
> unloaded. The reason is that there is no acces to CS timing property of
> a device node being removed, thus we can't track which of configured CS
> are available for re-configuration.
> 
> Signed-off-by: Ivan Bornyakov <i.bornyakov@...rotek.ru>
> ---
> Changelog:
>   v1 -> v2: minor style fixes
>    * rename "priv" -> weim_priv"
>    * remove excessive newline
>   v2 -> v3: minor style fixes
>    * rename "weim_data *weim_priv" -> "weim_priv *priv"
> 
>  drivers/bus/imx-weim.c | 135 ++++++++++++++++++++++++++++++++++++++---
>  1 file changed, 126 insertions(+), 9 deletions(-)

Applied, thanks!