Add driver to support DDR on STM32MP2 platform. It drives the DDR PHY
and its firmware, as well as the DDR controller.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Change-Id: I93de2db1b9378d5654e76b3bf6f3407d80bc4ca5
Disabling AXI port, enabling host interface and both enabling/disabling
software self-refresh services are already present inside the driver
source code.
Factorize by gathering them as services inside the generic part,
and adapt driver to call these new functions.
Add services to manage quasi-dynamic registers. DDRCTRL contains
quasi-dynamic registers, which are dynamic only under some conditions
defined by the user guide (with 4 groups).
In our driver, out of reset state, only groups 3 and 4 are updated.
Group 4 needs only sw_done/sw_done_ack sequence, already available.
Group 3 sequence include more conditions, that are gathered in
specific services. stm32mp_ddr_disable_host_interface() has been added
to do this.
Add dedicated generic service to toggle rfshctl3.refresh_update_level
and wait for completion.
Manage AXI ports and HIF when updating QD3 registers. Quasi-dynamic
group 3 (QD3) registers are updated when DDR is not completely
initialized, i.e. when AXI ports are not enabled and possibly when
host interface (HIF) is not enabled too.
In that case, a specific mechanism is necessary to restore the same
conditions as before accessing QD3 registers.
Static functions have been added to get AXI ports and HIF states and
are used to determine the needed conditions to set/unset.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Change-Id: I880f88b1cb6fc76199ad9ea33e9d63a5c469aed4
It was only used for an error trace, with little added value. This
allows some gains in DDR driver data size.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I02e2fc75efd90ff188e62f39850b9bd4c3af1649
Instead of using hard-coded number in DDR driver, use macros.
Modify TIMEOUT_US_1S to DDR_TIMEOUT_US_1S to align with other defines.
Signed-off-by: Yann Gautier <yann.gautier@st.com>
Change-Id: I489084132821774b0049a4a5d7fc30db24a7bb11
Modify the DDR driver to handle the DDR power supplies when a PMIC
is present in the function stm32mp_board_ddr_power_init(), define
in the platform file.
This patch allows to easily modify the used DDR power supplies
for customer boards, when they don't use STPMIC1 PMU or when
the regulators are not connected as on the STMicroelectronics
boards.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: I93ee6295ef7032ac20f03608d22cd460f7d87ef5
In a later patch, the stm32mp1_def.h will be reworked. The inclusion
of common/debug.h may not be done there through another included file.
Add this header inclusion in the files that need it.
Change-Id: I83687f7910032ca38c0856796580a650e1e41a68
Signed-off-by: Yann Gautier <yann.gautier@st.com>
stm32mp_ddrctl structure contains DDRCTRL registers definitions.
stm32mp_ddr_info contains general DDR information extracted from DT.
stm32mp_ddr_size moves to the generic side.
stm32mp1_ddr_priv contains platform private data.
stm32mp_ddr_dt_get_info() and stm32mp_ddr_dt_get_param() allow to
retrieve data from DT. They are located in new generic c/h files in
which stm32mp_ddr_param structure is declared. Platform makefile
is updated.
Adapt driver with this new classification.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Change-Id: I4187376c9fff1a30e7a94407d188391547107997
