mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-29 10:08:59 +00:00
52 lines
1.6 KiB
Diff
52 lines
1.6 KiB
Diff
|
From f0c29c5d370507ca2106689e7e17b81e8b58f236 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Samuel Holland <samuel@sholland.org>
|
||
|
|
Date: Sun, 14 Nov 2021 11:37:34 -0600
|
||
|
|
Subject: [PATCH 045/117] dt-bindings: hwlock: sun6i: Add interrupts property
|
||
|
|
|
||
|
|
While it was not officially documented until recently (e.g. A50), the
|
||
|
|
hwspinlock block can trigger an interrupt when a lock is unlocked. This
|
||
|
|
capability is used by Allwinner's ARISC firmware, it has been verified
|
||
|
|
to work on A64, and the IRQ numbers are reserved as far back as A31.
|
||
|
|
So most likely this feature has always been available.
|
||
|
|
|
||
|
|
Even though the Linux hwspinlock framework cannot make use of the IRQ,
|
||
|
|
the capability should still be documented in the device tree.
|
||
|
|
|
||
|
|
Signed-off-by: Samuel Holland <samuel@sholland.org>
|
||
|
|
---
|
||
|
|
.../bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml | 6 ++++++
|
||
|
|
1 file changed, 6 insertions(+)
|
||
|
|
|
||
|
|
--- a/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
|
||
|
|
+++ b/Documentation/devicetree/bindings/hwlock/allwinner,sun6i-a31-hwspinlock.yaml
|
||
|
|
@@ -26,17 +26,22 @@ properties:
|
||
|
|
resets:
|
||
|
|
maxItems: 1
|
||
|
|
|
||
|
|
+ interrupts:
|
||
|
|
+ maxItems: 1
|
||
|
|
+
|
||
|
|
required:
|
||
|
|
- compatible
|
||
|
|
- reg
|
||
|
|
- clocks
|
||
|
|
- resets
|
||
|
|
+ - interrupts
|
||
|
|
|
||
|
|
additionalProperties: false
|
||
|
|
|
||
|
|
examples:
|
||
|
|
- |
|
||
|
|
#include <dt-bindings/clock/sun8i-a23-a33-ccu.h>
|
||
|
|
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
|
||
|
|
#include <dt-bindings/reset/sun8i-a23-a33-ccu.h>
|
||
|
|
|
||
|
|
hwlock@1c18000 {
|
||
|
|
@@ -44,5 +49,6 @@ examples:
|
||
|
|
reg = <0x01c18000 0x1000>;
|
||
|
|
clocks = <&ccu CLK_BUS_SPINLOCK>;
|
||
|
|
resets = <&ccu RST_BUS_SPINLOCK>;
|
||
|
|
+ interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
|
||
|
|
};
|
||
|
|
...
|