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ARM: dts: r8a7792: add CAN clocks

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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 the external clock fed on the CAN_CLK pin.  Describe
those  clocks in  the R8A7792 device tree.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Sergei Shtylyov 2016-07-14 23:19:44 +03:00 committed by Simon Horman
parent b12dcdcc47
commit 47db051c22
1 changed files with 20 additions and 2 deletions
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22
arch/arm/boot/dts/r8a7792.dtsi
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@ -511,6 +511,13 @@
clock-div = <8>;
clock-mult = <1>;
};
rcan_clk: rcan {
compatible = "fixed-factor-clock";
clocks = <&pll1_div2_clk>;
#clock-cells = <0>;
clock-div = <49>;
clock-mult = <1>;
};
/* Gate clocks */
mstp1_clks: mstp1_clks@e6150134 {
@ -572,7 +579,8 @@
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>,
<&cp_clk>, <&cp_clk>, <&cp_clk>, <&cp_clk>;
<&cp_clk>, <&cp_clk>, <&p_clk>, <&p_clk>,
<&cp_clk>, <&cp_clk>;
#clock-cells = <1>;
clock-indices = <
R8A7792_CLK_GPIO7 R8A7792_CLK_GPIO6
@ -580,12 +588,14 @@
R8A7792_CLK_GPIO3 R8A7792_CLK_GPIO2
R8A7792_CLK_GPIO1 R8A7792_CLK_GPIO0
R8A7792_CLK_GPIO11 R8A7792_CLK_GPIO10
R8A7792_CLK_CAN1 R8A7792_CLK_CAN0
R8A7792_CLK_GPIO9 R8A7792_CLK_GPIO8
>;
clock-output-names =
"gpio7", "gpio6", "gpio5", "gpio4",
"gpio3", "gpio2", "gpio1", "gpio0",
"gpio11", "gpio10", "gpio9", "gpio8";
"gpio11", "gpio10", "can1", "can0",
"gpio9", "gpio8";
};
};
@ -604,4 +614,12 @@
/* This value must be overridden by the board. */
clock-frequency = <0>;
};
/* External CAN clock */
can_clk: can {
compatible = "fixed-clock";
#clock-cells = <0>;
/* This value must be overridden by the board. */
clock-frequency = <0>;
};
};