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[1/3] ARM: dts: r8a7792: add CAN clocks

Message ID 2649698.YI9UQEvgG8@wasted.cogentembedded.com (mailing list archive)
State Accepted
Commit 47db051c22a03d41eac0d8193f3fe37b4f9768e9
Headers show

Commit Message

Sergei Shtylyov July 14, 2016, 8:19 p.m. UTC 
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>

---
 arch/arm/boot/dts/r8a7792.dtsi |   22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

Comments

Geert Uytterhoeven July 15, 2016, 3:19 a.m. UTC | #1 
On Thu, Jul 14, 2016 at 10:19 PM, Sergei Shtylyov
<sergei.shtylyov@cogentembedded.com> wrote:
> 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>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
diff mbox

Patch

Index: renesas/arch/arm/boot/dts/r8a7792.dtsi
===================================================================
--- renesas.orig/arch/arm/boot/dts/r8a7792.dtsi
+++ renesas/arch/arm/boot/dts/r8a7792.dtsi
@@ -530,6 +530,13 @@ 
 			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 {
@@ -600,7 +607,8 @@ 
 			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
@@ -608,12 +616,14 @@ 
 				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";
 		};
 	};
 
@@ -630,6 +640,14 @@ 
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
 		/* 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>;
 	};
 };