From d0342ceb78ed86b8ed28afe14d070720667da70f Mon Sep 17 00:00:00 2001
From: Evgeny Boger <boger@wirenboard.com>
Date: Mon, 22 Nov 2021 13:46:14 +0300
Subject: [PATCH] dt-bindings: net: can: add support for Allwinner R40 CAN
controller
Allwinner R40 (also known as A40i, T3, V40) has a CAN controller. The
controller is the same as in earlier A10 and A20 SoCs, but needs reset
line to be deasserted before use.
This patch Introduces new compatible for R40 CAN controller with
required resets property.
Link: https://lore.kernel.org/all/20211122104616.537156-2-boger@wirenboard.com
Signed-off-by: Evgeny Boger <boger@wirenboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
.../net/can/allwinner,sun4i-a10-can.yaml | 24 +++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml b/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml
index a95960ee3feba..c93fe9d3ea824 100644
--- a/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml
+++ b/Documentation/devicetree/bindings/net/can/allwinner,sun4i-a10-can.yaml
@@ -17,6 +17,7 @@ properties:
- const: allwinner,sun7i-a20-can
- const: allwinner,sun4i-a10-can
- const: allwinner,sun4i-a10-can
+ - const: allwinner,sun8i-r40-can
reg:
maxItems: 1
@@ -27,6 +28,19 @@ properties:
clocks:
maxItems: 1
+ resets:
+ maxItems: 1
+
+if:
+ properties:
+ compatible:
+ contains:
+ const: allwinner,sun8i-r40-can
+
+then:
+ required:
+ - resets
+
required:
- compatible
- reg
@@ -47,5 +61,15 @@ examples:
interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&ccu CLK_APB1_CAN>;
};
+ - |
+ #define RST_BUS_CAN 68
+ #define CLK_BUS_CAN 91
+ can1: can@1c2bc00 {
+ compatible = "allwinner,sun8i-r40-can";
+ reg = <0x01c2bc00 0x400>;
+ interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_BUS_CAN>;
+ resets = <&ccu RST_BUS_CAN>;
+ };
...