[PATCH v5 0/5] add DM based reset driver for SiFive SoC's

[Sagar Shrikant Kadam]

The FU540-C000 support in U-Boot is missing DM based reset driver,
and is handling reset's to sub-system within the prci driver itself.
The series here adds a generic DM reset driver for SiFive SoC's so as 
to leverage the U-Boot's reset framework and binds the reset driver with
prci driver.
The PRCI driver takes care of triggering the consumers reset signals
appropriately.

Patch 1: Add necessary dt indexes for device reset register.
Patch 2: Update macro's to use common dt indexes from binding header. 
Patch 3: Add reset producer and consumer entries within the device tree.
Patch 4: Add reset dm driver and bind it within prci module.
Patch 5: Add Kconfig, Makefile entries and enable the driver

This series is re-based on u-boot-riscv top commit 3b191c56c841 ("Merge
 branch '2020-07-28-Kconfig-migrations'")

History:
==========================
V5:
-Rebased the series on u-boot-riscv/master.

V4:
-Rebased the series to u-boot/master. 

V3:
-Add reset indexes in separate dt binding header instead of
 updating the clock dt binding header which is synced from Linux

V2:
-Removed extra character in commit log of 2nd patch 

V1:
-Base version.

Sagar Shrikant Kadam (5):
  dt-bindings: prci: add indexes for reset signals available in prci
  fu540: prci: use common reset indexes defined in binding header
  fu540: dtsi: add reset producer and consumer entries
  sifive: reset: add DM based reset driver for SiFive SoC's
  configs: reset: fu540: enable dm reset framework for SiFive

 arch/riscv/dts/fu540-c000-u-boot.dtsi         |  12 +++
 arch/riscv/include/asm/arch-fu540/reset.h     |  13 +++
 configs/sifive_fu540_defconfig                |   2 +
 drivers/clk/sifive/fu540-prci.c               |  90 ++++++++++++++------
 drivers/reset/Kconfig                         |   9 ++
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-sifive.c                  | 118 ++++++++++++++++++++++++++
 include/dt-bindings/reset/sifive-fu540-prci.h |  19 +++++
 8 files changed, 239 insertions(+), 25 deletions(-)
 create mode 100644 arch/riscv/include/asm/arch-fu540/reset.h
 create mode 100644 drivers/reset/reset-sifive.c
 create mode 100644 include/dt-bindings/reset/sifive-fu540-prci.h

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2.7.4