[PATCH V4 0/3] irqchip: riscv: Add thead,c900-plic support

[guoren at kernel.org]

From: Guo Ren <guoren at linux.alibaba.com>

Add the compatible string "thead,c900-plic" to the riscv plic
bindings to support allwinner d1 SOC which contains c906 core.

Changes since V4:
 - Update description in errata style
 - Update enum suggested by Anup, Heiko, Samuel
 - Update comment by Anup
 - Add cover-letter

Changes since V3:
 - Rename "c9xx" to "c900"
 - Add thead,c900-plic in the description section
 - Add sifive_plic_chip and thead_plic_chip for difference

Changes since V2:
 - Add a separate compatible string "thead,c9xx-plic"
 - set irq_mask/unmask of "plic_chip" to NULL and point
   irq_enable/disable of "plic_chip" to plic_irq_mask/unmask
 - Add a detailed comment block in plic_init() about the
   differences in Claim/Completion process of RISC-V PLIC and C9xx
   PLIC.

Guo Ren (3):
  irqchip/sifive-plic: Add thead,c900-plic support
  dt-bindings: update riscv plic compatible string
  dt-bindings: vendor-prefixes: add T-Head Semiconductor

 .../sifive,plic-1.0.0.yaml                    | 11 +++++-
 .../devicetree/bindings/vendor-prefixes.yaml  |  2 ++
 drivers/irqchip/irq-sifive-plic.c             | 34 +++++++++++++++++--
 3 files changed, 44 insertions(+), 3 deletions(-)

-- 
2.25.1