[PATCH v6 0/6] arm: Base support for Renesas RZN1D-DB Board

From: Michel Pollet
Date: Tue May 22 2018 - 05:12:16 EST


This series adds the plain basic support for booting a bare
kernel on the RZ/N1D-DB Board. It's been trimmed to the strict
minimum as a 'base', further patches that will add the
rest of the support.

Special note on the clock driver: Current usage of the clocks on Linux
involves Linux 'claiming' all of them, disabling the one it doesn't
need and so on.
On *this* architecture it can't be done, there is at least one other
OS running on the CM3 core that claims it's own clock; Linux can claim
some others but definitely not start disabling stuff it isn't supposed to.

Thanks for the comments on the previous versions!

v6:
+ Fix for suggestion by Geert Uytterhoeven
+ Removed "renesas,rzn1" from the board bindings
+ Removed patches already merged.
+ Removed reboot driver
+ Added a whole clock infrastructure.
+ Rebased on next-20180517
v5:
+ Given the problems I have with getting in some structure around the
sysctrl block, I've removed the MFD, I've now attached the reboot
driver on it's own pair of registers.
+ Rebased on next-20180417
v4:
+ Fixes for suggestions by Simon Horman
+ Fixes for suggestions by Jacopo Mondi
+ Fixes for suggestions by Geert Uytterhoeven
+ Renamed the r9a06g0xx.dtsi file, given up on trying to get a family
common file in, so dropped potential RZ/N1S support and now only
focus on RZ/N1D for this patchset.
+ Added 'always-on' to the architected timer node, because it is.
+ Added ARCH_R9A06G032, to match others patterns like RCAR
+ Sorted the .dts files, added empty lines as required.
+ Fixed patch prefixes to match git-log for bindings&dts
+ Merged board .dts & Makefile changes together
+ Rebased on next-20180410
v3:
+ Fixes for suggestions by Geert Uytterhoeven
+ Removed SoC Specific renesas,r9a06g032-xxx, as it's not needed for now.
+ Kept renesas,rzn1 as a family/generic for this family.
+ Fixed a couple of the commit messages.
+ Added Geert's Reviewed-By where appropriate.
v2:
+ Fixes for suggestions by Simon Horman
+ Fixes for suggestions by Rob Herring
+ Fixes for suggestions by Geert Uytterhoeven
+ Removed the mach file
+ Added a MFD base for the sysctrl block
+ Added a regmap based sub driver for the reboot handler
+ Renamed the files to match shmobile conventions
+ Adapted the compatible= strings to reflect 'family' vs 'part'
distinction.
+ Removed the sysctrl.h file entirelly.
+ Fixed every warnings from the DTC compiler on W=12 mode.
+ Split the device-tree patches from the code.

Michel Pollet (6):
dt-bindings: arm: Document the RZN1D-DB board
dt-bindings: Add the rzn1-clocks.h file
dt-bindings: clock: renesas,rzn1-clocks: document RZ/N1 clock driver
ARM: dts: Renesas RZ/N1 SoC base device tree file
ARM: dts: Renesas RZN1D-DB Board base file
clk: renesas: Renesas RZ/N1 clock driver

Documentation/devicetree/bindings/arm/shmobile.txt | 5 +-
.../bindings/clock/renesas,rzn1-clocks.txt | 44 ++
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/r9a06g032-rzn1d400-db.dts | 29 +
arch/arm/boot/dts/r9a06g032.dtsi | 86 +++
drivers/clk/renesas/Kconfig | 6 +
drivers/clk/renesas/Makefile | 1 +
drivers/clk/renesas/rzn1-clocks.c | 814 +++++++++++++++++++++
include/dt-bindings/clock/rzn1-clocks.h | 187 +++++
9 files changed, 1172 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/clock/renesas,rzn1-clocks.txt
create mode 100644 arch/arm/boot/dts/r9a06g032-rzn1d400-db.dts
create mode 100644 arch/arm/boot/dts/r9a06g032.dtsi
create mode 100644 drivers/clk/renesas/rzn1-clocks.c
create mode 100644 include/dt-bindings/clock/rzn1-clocks.h

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2.7.4