ARM: dts: r8a7794: add CAN clocks to device tree

Add CAN nodes to r8a7794 device tree.
Based on work by Sergei Shtylyov for the r8a7791 SoC.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>

diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi
index 7d7d187..2d8835b 100644 (file)
--- a/arch/arm/boot/dts/r8a7794.dtsi
+++ b/arch/arm/boot/dts/r8a7794.dtsi
@@ -843,6 +843,22 @@
                        clock-frequency = <0>;
                };
 
+               /* External USB clock - can be overridden by the board */
+               usb_extal_clk: usb_extal {
+                       compatible = "fixed-clock";
+                       #clock-cells = <0>;
+                       clock-frequency = <48000000>;
+               };
+
+               /* External CAN clock */
+               can_clk: can {
+                       compatible = "fixed-clock";
+                       #clock-cells = <0>;
+                       /* This value must be overridden by the board. */
+                       clock-frequency = <0>;
+                       status = "disabled";
+               };
+
                /* External SCIF clock */
                scif_clk: scif {
                        compatible = "fixed-clock";
@@ -857,10 +873,11 @@
                        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 */
@@ -1115,20 +1132,22 @@
                        compatible = "renesas,r8a7794-mstp-clocks", "renesas,cpg-mstp-clocks";
                        reg = <0 0xe6150994 0 4>, <0 0xe61509a4 0 4>;
                        clocks = <&cp_clk>, <&cp_clk>, <&cp_clk>, <&cp_clk>,
-                                <&cp_clk>, <&cp_clk>, <&cp_clk>,
-                                <&cpg_clocks R8A7794_CLK_QSPI>, <&hp_clk>, <&hp_clk>,
-                                <&hp_clk>, <&hp_clk>, <&hp_clk>, <&hp_clk>;
+                                <&cp_clk>, <&cp_clk>, <&cp_clk>, <&p_clk>,
+                                <&p_clk>, <&cpg_clocks R8A7794_CLK_QSPI>,
+                                <&hp_clk>, <&hp_clk>, <&hp_clk>, <&hp_clk>,
+                                <&hp_clk>, <&hp_clk>;
                        #clock-cells = <1>;
                        clock-indices = <R8A7794_CLK_GPIO6 R8A7794_CLK_GPIO5
                                         R8A7794_CLK_GPIO4 R8A7794_CLK_GPIO3
                                         R8A7794_CLK_GPIO2 R8A7794_CLK_GPIO1
-                                        R8A7794_CLK_GPIO0 R8A7794_CLK_QSPI_MOD
+                                        R8A7794_CLK_GPIO0 R8A7794_CLK_RCAN1
+                                        R8A7794_CLK_RCAN0 R8A7794_CLK_QSPI_MOD
                                         R8A7794_CLK_I2C5 R8A7794_CLK_I2C4
                                         R8A7794_CLK_I2C3 R8A7794_CLK_I2C2
                                         R8A7794_CLK_I2C1 R8A7794_CLK_I2C0>;
                        clock-output-names =
                                "gpio6", "gpio5", "gpio4", "gpio3", "gpio2",
-                               "gpio1", "gpio0", "qspi_mod",
+                               "gpio1", "gpio0", "rcan1", "rcan0", "qspi_mod",
                                "i2c5", "i2c4", "i2c3", "i2c2", "i2c1", "i2c0";
                };
                mstp11_clks: mstp11_clks@e615099c {

diff --git a/include/dt-bindings/clock/r8a7794-clock.h b/include/dt-bindings/clock/r8a7794-clock.h
index f843de6..9703fbd 100644 (file)
--- 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
@@ -95,6 +96,8 @@
 #define R8A7794_CLK_GPIO2              10
 #define R8A7794_CLK_GPIO1              11
 #define R8A7794_CLK_GPIO0              12
+#define R8A7794_CLK_RCAN1              15
+#define R8A7794_CLK_RCAN0              16
 #define R8A7794_CLK_QSPI_MOD           17
 #define R8A7794_CLK_I2C5               25
 #define R8A7794_CLK_I2C4               27