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authorSimon Horman <horms+renesas@verge.net.au>2016-03-16 10:52:55 +0900
committerSimon Horman <horms+renesas@verge.net.au>2016-04-20 08:56:36 +1000
commit7892e6c1be78a7b008722badd99e5abd0ad6007b (patch)
treeac9355fe1425eca00038aa2be250910f4c9b2221 /arch/arm/boot/dts/r8a7793.dtsi
parent9f1c1a2c784d28d45d0cd18a44e45ddd15d7458f (diff)
downloadop-kernel-dev-7892e6c1be78a7b008722badd99e5abd0ad6007b.zip
op-kernel-dev-7892e6c1be78a7b008722badd99e5abd0ad6007b.tar.gz
ARM: dts: r8a7793: add CAN clocks to device tree
The R-Car CAN controllers can derive the CAN bus clock not only from their peripheral clock input (clkp1) but also from the other internal clock (clkp2) and external clock fed on CAN_CLK pin. Describe those clocks in the device tree along with the USB_EXTAL clock from which clkp2 is derived. Based on work by Sergei Shtylyov for the r8a7791 SoC. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'arch/arm/boot/dts/r8a7793.dtsi')
-rw-r--r--arch/arm/boot/dts/r8a7793.dtsi27
1 files changed, 23 insertions, 4 deletions
diff --git a/arch/arm/boot/dts/r8a7793.dtsi b/arch/arm/boot/dts/r8a7793.dtsi
index 95bbed9..0e609bd 100644
--- a/arch/arm/boot/dts/r8a7793.dtsi
+++ b/arch/arm/boot/dts/r8a7793.dtsi
@@ -839,6 +839,22 @@
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";
@@ -853,7 +869,7 @@
compatible = "renesas,r8a7793-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",
@@ -1081,6 +1097,7 @@
reg = <0 0xe6150994 0 4>, <0 0xe61509a4 0 4>;
clocks = <&cp_clk>, <&cp_clk>, <&cp_clk>, <&cp_clk>,
<&cp_clk>, <&cp_clk>, <&cp_clk>, <&cp_clk>,
+ <&p_clk>, <&p_clk>,
<&cpg_clocks R8A7793_CLK_QSPI>, <&hp_clk>,
<&cp_clk>, <&hp_clk>, <&hp_clk>, <&hp_clk>,
<&hp_clk>, <&hp_clk>;
@@ -1090,7 +1107,8 @@
R8A7793_CLK_GPIO5 R8A7793_CLK_GPIO4
R8A7793_CLK_GPIO3 R8A7793_CLK_GPIO2
R8A7793_CLK_GPIO1 R8A7793_CLK_GPIO0
- R8A7793_CLK_QSPI_MOD R8A7793_CLK_I2C5
+ R8A7793_CLK_QSPI_MOD R8A7793_CLK_RCAN1
+ R8A7793_CLK_RCAN0 R8A7793_CLK_I2C5
R8A7793_CLK_IICDVFS R8A7793_CLK_I2C4
R8A7793_CLK_I2C3 R8A7793_CLK_I2C2
R8A7793_CLK_I2C1 R8A7793_CLK_I2C0
@@ -1098,8 +1116,9 @@
clock-output-names =
"gpio7", "gpio6", "gpio5", "gpio4",
"gpio3", "gpio2", "gpio1", "gpio0",
- "qspi_mod", "i2c5", "i2c6", "i2c4",
- "i2c3", "i2c2", "i2c1", "i2c0";
+ "rcan1", "rcan0", "qspi_mod", "i2c5",
+ "i2c6", "i2c4", "i2c3", "i2c2", "i2c1",
+ "i2c0";
};
mstp10_clks: mstp10_clks@e6150998 {
compatible = "renesas,r8a7793-mstp-clocks", "renesas,cpg-mstp-clocks";
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