[PATCH 9/9] ram: stm32mp1: the property st,phy-cal becomes optional

Patrick DELAUNAY patrick.delaunay at st.com
Tue Mar 24 09:51:53 CET 2020


> From: Patrick DELAUNAY <patrick.delaunay at st.com>
> Sent: vendredi 6 mars 2020 11:14
> This parameter "st,phy-cal" becomes optional and when it is absent the built-in
> PHY calibration is done.
> It is the case in the helper dtsi file "stm32mp15-ddr.dtsi"
> except if DDR_PHY_CAL_SKIP is defined.
> This patch also impact the ddr interactive mode
> - the registers of the param 'phy.cal' are initialized to 0 when
>   "st,phy-cal" is not present in device tree (default behavior when
>   DDR_PHY_CAL_SKIP is not activated)
> - the info 'cal' field can be use to change the calibration behavior
>   - cal=1 => use param phy.cal to initialize the PHY, built-in training
>              is skipped
>   - cal=0 => param phy.cal is absent, built-in training is used (default)
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> ---

Applied to u-boot-stm/next, thanks!



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