Add CAN nodes to r8a7794 device tree.
Based on work by Sergei Shtylyov for the r8a7791 SoC.
Cc: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
arch/arm/boot/dts/r8a7794.dtsi | 23 +++++++++++++++++++++--
include/dt-bindings/clock/r8a7794-clock.h | 1 +
2 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi
index eacb2b291361..c8742a599330 100644
--- a/arch/arm/boot/dts/r8a7794.dtsi
+++ b/arch/arm/boot/dts/r8a7794.dtsi
@@ -844,6 +844,24 @@
clock-output-names = "extal";
};
+ /* External USB clock - can be overridden by the board */
+ usb_extal_clk: usb_extal_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <48000000>;
+ clock-output-names = "usb_extal";
+ };
+
+ /* External CAN clock */
+ can_clk: can_clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ /* This value must be overridden by the board. */
+ clock-frequency = <0>;
+ clock-output-names = "can_clk";
+ status = "disabled";
+ };
+
/* External SCIF clock */
scif_clk: scif {
compatible = "fixed-clock";
@@ -858,10 +876,11 @@
compatible = "renesas,r8a7794-cpg-clocks",
"renesas,rcar-gen2-cpg-clocks";
reg = <0 0xe6150000 0 0x1000>;
- clocks = <&extal_clk>;
+ clocks = <&extal_clk &usb_extal_clk>;
#clock-cells = <1>;
clock-output-names = "main", "pll0", "pll1", "pll3",
- "lb", "qspi", "sdh", "sd0", "z";
+ "lb", "qspi", "sdh", "sd0", "z",
+ "rcan";
#power-domain-cells = <0>;
};
/* Variable factor clocks */
diff --git a/include/dt-bindings/clock/r8a7794-clock.h b/include/dt-bindings/clock/r8a7794-clock.h
index f843de6bf377..222a9dcbabb8 100644
--- a/include/dt-bindings/clock/r8a7794-clock.h
+++ b/include/dt-bindings/clock/r8a7794-clock.h
@@ -21,6 +21,7 @@
#define R8A7794_CLK_SDH 6
#define R8A7794_CLK_SD0 7
#define R8A7794_CLK_Z 8
+#define R8A7794_CLK_RCAN 9
/* MSTP0 */
#define R8A7794_CLK_MSIOF0 0
--
2.1.4
