On AM62x SoC, MCANs on MCU domain do not have hardware interrupt
routed to A53 Linux, instead they will use software interrupt by
hrtimer.
To enable timer polling method, interrupts should be
optional so remove interrupts property from required section and
add an example for MCAN node with timer polling enabled.
Signed-off-by: Judith Mendez <jm@xxxxxx>
---
.../bindings/net/can/bosch,m_can.yaml | 20 +++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
index 67879aab623b..bb518c831f7b 100644
--- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
+++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
@@ -122,8 +122,6 @@ required:
- compatible
- reg
- reg-names
- - interrupts
- - interrupt-names
- clocks
- clock-names
- bosch,mram-cfg
@@ -132,6 +130,7 @@ additionalProperties: false
examples:
- |
+ // Example with interrupts
#include <dt-bindings/clock/imx6sx-clock.h>
can@20e8000 {
compatible = "bosch,m_can";
@@ -149,4 +148,21 @@ examples:
};
};
+ - |
+ // Example with timer polling
+ #include <dt-bindings/clock/imx6sx-clock.h>
+ can@20e8000 {
+ compatible = "bosch,m_can";
+ reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;
+ reg-names = "m_can", "message_ram";
+ clocks = <&clks IMX6SX_CLK_CANFD>,
+ <&clks IMX6SX_CLK_CANFD>;
+ clock-names = "hclk", "cclk";
+ bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;
+
+ can-transceiver {
+ max-bitrate = <5000000>;
+ };
+ };
+
...
--
2.17.1
