From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Horman Date: Thu, 26 Feb 2015 06:21:22 +0000 Subject: [PATCH 25/32] ARM: shmobile: r8a7790: add CAN clocks Message-Id: <41650f406cdc4a420d5c08e1b407f6420323a04b.1424849129.git.horms+renesas@verge.net.au> List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org From: Sergei Shtylyov 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. Signed-off-by: Sergei Shtylyov Acked-by: Geert Uytterhoeven Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790.dtsi | 22 ++++++++++++++++++++-- include/dt-bindings/clock/r8a7790-clock.h | 1 + 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 24de994..e872854 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -838,16 +838,34 @@ clock-output-names = "audio_clk_c"; }; + /* 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@e6150000 { compatible = "renesas,r8a7790-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", "sd1", - "z"; + "z", "rcan"; }; /* Variable factor clocks */ diff --git a/include/dt-bindings/clock/r8a7790-clock.h b/include/dt-bindings/clock/r8a7790-clock.h index 9194027..ffa8c11 100644 --- a/include/dt-bindings/clock/r8a7790-clock.h +++ b/include/dt-bindings/clock/r8a7790-clock.h @@ -21,6 +21,7 @@ #define R8A7790_CLK_SD0 7 #define R8A7790_CLK_SD1 8 #define R8A7790_CLK_Z 9 +#define R8A7790_CLK_RCAN 10 /* MSTP0 */ #define R8A7790_CLK_MSIOF0 0 -- 2.1.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: horms+renesas@verge.net.au (Simon Horman) Date: Thu, 26 Feb 2015 15:21:22 +0900 Subject: [PATCH 25/32] ARM: shmobile: r8a7790: add CAN clocks In-Reply-To: References: Message-ID: <41650f406cdc4a420d5c08e1b407f6420323a04b.1424849129.git.horms+renesas@verge.net.au> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Sergei Shtylyov 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. Signed-off-by: Sergei Shtylyov Acked-by: Geert Uytterhoeven Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7790.dtsi | 22 ++++++++++++++++++++-- include/dt-bindings/clock/r8a7790-clock.h | 1 + 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 24de994..e872854 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -838,16 +838,34 @@ clock-output-names = "audio_clk_c"; }; + /* 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,r8a7790-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", "sd1", - "z"; + "z", "rcan"; }; /* Variable factor clocks */ diff --git a/include/dt-bindings/clock/r8a7790-clock.h b/include/dt-bindings/clock/r8a7790-clock.h index 9194027..ffa8c11 100644 --- a/include/dt-bindings/clock/r8a7790-clock.h +++ b/include/dt-bindings/clock/r8a7790-clock.h @@ -21,6 +21,7 @@ #define R8A7790_CLK_SD0 7 #define R8A7790_CLK_SD1 8 #define R8A7790_CLK_Z 9 +#define R8A7790_CLK_RCAN 10 /* MSTP0 */ #define R8A7790_CLK_MSIOF0 0 -- 2.1.4