From mboxrd@z Thu Jan 1 00:00:00 1970 From: horms@verge.net.au (Simon Horman) Date: Thu, 21 Jan 2016 21:15:27 +0900 Subject: [PATCH 1/2] ARM: dts: r8a7793: add CAN clocks In-Reply-To: References: <1453352981-16104-1-git-send-email-horms+renesas@verge.net.au> <1453352981-16104-2-git-send-email-horms+renesas@verge.net.au> Message-ID: <20160121121525.GA6833@verge.net.au> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On ?, 1? 21, 2016 at 09:38:21?? +0100, Geert Uytterhoeven wrote: > Hi Simon, > > On Thu, Jan 21, 2016 at 6:09 AM, Simon Horman > 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 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. > > > > Cc: Sergei Shtylyov > > Signed-off-by: Simon Horman > > --- > > arch/arm/boot/dts/r8a7793.dtsi | 20 +++++++++++++++++++- > > 1 file changed, 19 insertions(+), 1 deletion(-) > > > > diff --git a/arch/arm/boot/dts/r8a7793.dtsi b/arch/arm/boot/dts/r8a7793.dtsi > > index 0ce7cc420c9d..5d9375fa6759 100644 > > --- a/arch/arm/boot/dts/r8a7793.dtsi > > +++ b/arch/arm/boot/dts/r8a7793.dtsi > > @@ -706,12 +706,30 @@ > > 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"; > > + }; > > + > > /* Special CPG clocks */ > > cpg_clocks: cpg_clocks at e6150000 { > > 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", > > To create the "rcan" clock, it should be listed in clock-output-names. Thanks, sorry for missing that.