Reduce the delay after BIST delay, from 1ms to 10us
which is enough accoriding datasheet.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Update the BIST config to compute the real use mask for the real
bank, row and col of the used DDR. The values are get from addrmap
register value.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
The derating (timing parameter derating using MR4 read value)
can't be activated during BIST test, as the MR4 read answer will
be not understood by BIST (BISTGSR.BDONE bit stay at 0,
BISTWCSR.DXWCNT = 0x206 instead of BISTWCR.BWCNT = 0x200).
This patch only impacts the tuning on LPDDR2/LPDDR3,
if derateen.derate_enable = 1.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Avoid to block the tuning procedure on BIST error (not finished
BIST procedure) by adding a 1000us timeout on the polling of
BISTGSR.BDDONE executed to detect the end of BIST.
The normal duration of the BIST test is around 5us.
This patch also cleanup comments.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Display result information for software read DQS gating, the tuning 0
which be used by CubeMX DDR tuning tools.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Add command tuning for DDR interactive mode, used during
board bring-up or with CubeMX DDR tools to execute software
tuning for the DDR configuration:
- software read DQS Gating (replace the built-in one)
- Bit de-skew
- Eye Training or DQS training
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
