[PATCH v3 2/5] pinctrl: st: Enhance the controller to manage unavailable registers

[srinivas kandagatla]

On 07/03/14 14:40, Maxime COQUELIN wrote:
> From: Giuseppe Cavallaro <peppe.cavallaro at st.com>
> 
> This patch adds a new logic inside the st pinctrl to manage
> an unsupported scenario: some sysconfig are not available!
> 
> This is the case of STiH407 where, although documented, the
> following registers from SYSCFG_FLASH have been removed from the SoC.
> 
> SYSTEM_CONFIG3040
>    Output Enable pad control for all PIO Alternate Functions
> and
> SYSTEM_ CONFIG3050
>    Pull Up pad control for all PIO Alternate Functions
> 
> Without managing this condition an imprecise external abort
> will be detect.
> 
> To do this the patch also reviews the st_parse_syscfgs
> and other routines to manipulate the registers only if
> actually available.
> In any case, for example the st_parse_syscfgs detected
> an error condition but no action was made in the
> st_pctl_probe_dt.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin at st.com>
> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro at st.com>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla at st.com>