[PATCH v15 4/4] arm: dts: mt2701: Use real clock for UARTs

Matthias Brugger matthias.bgg at gmail.com
Wed Nov 9 09:20:21 PST 2016



On 11/04/2016 08:43 AM, Erin Lo wrote:
> We used to use a fixed rate clock for the UARTs. Now that we have clock
> support we can associate the correct clocks to the UARTs and drop the
> 26MHz fixed rate UART clock.
>
> Signed-off-by: Erin Lo <erin.lo at mediatek.com>

Applied, thanks.

> ---
>  arch/arm/boot/dts/mt2701.dtsi | 18 ++++++++----------
>  1 file changed, 8 insertions(+), 10 deletions(-)
>
> diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
> index c9a8dbf..7eab6f4 100644
> --- a/arch/arm/boot/dts/mt2701.dtsi
> +++ b/arch/arm/boot/dts/mt2701.dtsi
> @@ -73,12 +73,6 @@
>  		#clock-cells = <0>;
>  	};
>
> -	uart_clk: dummy26m {
> -		compatible = "fixed-clock";
> -		clock-frequency = <26000000>;
> -		#clock-cells = <0>;
> -	};
> -
>  	clk26m: oscillator at 0 {
>  		compatible = "fixed-clock";
>  		#clock-cells = <0>;
> @@ -186,7 +180,8 @@
>  			     "mediatek,mt6577-uart";
>  		reg = <0 0x11002000 0 0x400>;
>  		interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_LOW>;
> -		clocks = <&uart_clk>;
> +		clocks = <&pericfg CLK_PERI_UART0_SEL>, <&pericfg CLK_PERI_UART0>;
> +		clock-names = "baud", "bus";
>  		status = "disabled";
>  	};
>
> @@ -195,7 +190,8 @@
>  			     "mediatek,mt6577-uart";
>  		reg = <0 0x11003000 0 0x400>;
>  		interrupts = <GIC_SPI 52 IRQ_TYPE_LEVEL_LOW>;
> -		clocks = <&uart_clk>;
> +		clocks = <&pericfg CLK_PERI_UART1_SEL>, <&pericfg CLK_PERI_UART1>;
> +		clock-names = "baud", "bus";
>  		status = "disabled";
>  	};
>
> @@ -204,7 +200,8 @@
>  			     "mediatek,mt6577-uart";
>  		reg = <0 0x11004000 0 0x400>;
>  		interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_LOW>;
> -		clocks = <&uart_clk>;
> +		clocks = <&pericfg CLK_PERI_UART2_SEL>, <&pericfg CLK_PERI_UART2>;
> +		clock-names = "baud", "bus";
>  		status = "disabled";
>  	};
>
> @@ -213,7 +210,8 @@
>  			     "mediatek,mt6577-uart";
>  		reg = <0 0x11005000 0 0x400>;
>  		interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_LOW>;
> -		clocks = <&uart_clk>;
> +		clocks = <&pericfg CLK_PERI_UART3_SEL>, <&pericfg CLK_PERI_UART3>;
> +		clock-names = "baud", "bus";
>  		status = "disabled";
>  	};
>  };
>



More information about the Linux-mediatek mailing list