lkml.org 
[lkml]   [2021]   [Oct]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V4 2/3] dt-bindings: update riscv plic compatible string
Date
From: Guo Ren <guoren@linux.alibaba.com>

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

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Palmer Dabbelt <palmerdabbelt@google.com>
Cc: Anup Patel <anup@brainfault.org>
Cc: Atish Patra <atish.patra@wdc.com>

---

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

Changes since V3:
- Rename "c9xx" to "c900"
- Add thead,c900-plic in the description section
---
.../interrupt-controller/sifive,plic-1.0.0.yaml | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
index 08d5a57ce00f..272f29540135 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
@@ -35,6 +35,12 @@ description:
contains a specific memory layout, which is documented in chapter 8 of the
SiFive U5 Coreplex Series Manual <https://static.dev.sifive.com/U54-MC-RVCoreIP.pdf>.

+ The C9xx PLIC does not comply with the interrupt claim/completion process defined
+ by the RISC-V PLIC specification because C9xx PLIC will mask an IRQ when it is
+ claimed by PLIC driver (i.e. readl(claim) and the IRQ will be unmasked upon
+ completion by PLIC driver (i.e. writel(claim). This behaviour breaks the handling
+ of IRQS_ONESHOT by the generic handle_fasteoi_irq() used in the PLIC driver.
+
maintainers:
- Sagar Kadam <sagar.kadam@sifive.com>
- Paul Walmsley <paul.walmsley@sifive.com>
@@ -46,7 +52,10 @@ properties:
- enum:
- sifive,fu540-c000-plic
- canaan,k210-plic
- - const: sifive,plic-1.0.0
+ - enmu:
+ - sifive,plic-1.0.0
+ - thead,c900-plic
+ - allwinner,sun20i-d1-plic

reg:
maxItems: 1
--
2.25.1
\
 
 \ /
  Last update: 2021-10-16 05:23    [W:0.192 / U:1.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site