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 adds a CAN node and the corresponding pinctrl descriptions.
Signed-off-by: Evgeny Boger <boger@xxxxxxxxxxxxxx>
---
arch/arm/boot/dts/sun8i-r40.dtsi | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index 1d87fc0c24ee..2ba0e681a7ac 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -511,6 +511,18 @@ pio: pinctrl@1c20800 {
#interrupt-cells = <3>;
#gpio-cells = <3>;
+ /omit-if-no-ref/
+ can_pa_pins: can-pa-pins {
+ pins = "PA16", "PA17";
+ function = "can";
+ };
+
+ /omit-if-no-ref/
+ can_ph_pins: can-ph-pins {
+ pins = "PH20", "PH21";
+ function = "can";
+ };
+
clk_out_a_pin: clk-out-a-pin {
pins = "PI12";
function = "clk_out_a";
@@ -926,6 +938,15 @@ i2c3: i2c@1c2b800 {
#size-cells = <0>;
};
+ can0: 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>;
+ status = "disabled";
+ };
+
i2c4: i2c@1c2c000 {
compatible = "allwinner,sun6i-a31-i2c";
reg = <0x01c2c000 0x400>;
--
2.25.1
