Add support for obtaining from DT the SRAM region to store the jump stub
for CPU core bringup, according to the renesas,smp-sram DT bindings.
If no region is specified in DT, the code falls back to hardcoded ICRAM1
as before, to maintain backwards compatibility.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
On R-Car H1 and Gen2, the SYSC interrupt registers are always configured
using hardcoded values in platform code. For R-Car Gen2, values are
provided for H2 and M2-W only, other SoCs are not yet supported, and
never will be.
Move this configuration from SoC-specific platform code to the
rcar_sysc_init() wrapper, so it can be skipped if the SYSC is configured
from DT. This would be the case not only for H1, H2, and M2-W using a
modern DTS, but also for other R-Car Gen2 SoCs not supported by the
platform code, relying purely on DT.
There is no longer a need to return the mapped register block, hence
make the function return void.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Currently the different SoCs in the R-Car Gen2 family use different
types of on-chip RAM for the jump stub:
- R-Car H2 uses Media RAM,
- R-Car M2-W uses another type of optional On-chip RAM, as it doesn't
have Media RAM,
- R-Car M2-N uses Inter Connect RAM in Magnus Damm's "ARM: shmobile:
r8a7793 boot address update".
As all R-Car Gen2 SoCs have 4 KiB of Inter Connect RAM, consolidate the
code by always using that.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Move the pm-rcar driver from arch/arm/mach-shmobile/ to
drivers/soc/renesas/, and its header file to include/linux/soc/renesas/,
so it can be shared between arm32 (R-Car H1 and Gen2) and arm64 (R-Car
Gen3). Rename it to rcar-sysc as it's really a driver for the R-Car
System Controller (SYSC).
Kill the intermediate PM_RCAR config symbol, as it's not user
configurable anymore, and to prepare for SoC-specific make rules.
Add the missing #include <linux/types.h> to rcar-sysc.h, which was
exposed by different include order.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The pm code for R-Car Gen2 is scatterd in each SoC. These files
(pm-r8a7790.c/pm-r8a7791.c) have some overlap code. This change
consolidate the pm code for R-Car Gen2 into one.
Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
