linux-kernel - Re: [PATCH 2/4] ARM: sun8i: h3/h5: add DE2 CCU device node for H3

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Date:   Fri, 27 Oct 2017 16:01:07 +0800
From:   icenowy@...c.io
To:     Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     devicetree@...r.kernel.org, linux-sunxi@...glegroups.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/4] ARM: sun8i: h3/h5: add DE2 CCU device node for H3

在 2017-09-11 23:55，Icenowy Zheng 写道：
> The DE2 in H3/H5 has a clock control unit in it, and the behavior is
> slightly different between H3 and H5.
> 
> Add the common parts in H3/H5 DTSI, and add the compatible string in H3
> DTSI.
> 
> The compatible string of H5 DE2 CCU will be added in a separated patch.
> 
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> ---
>  arch/arm/boot/dts/sun8i-h3.dtsi    |  4 ++++
>  arch/arm/boot/dts/sunxi-h3-h5.dtsi | 14 ++++++++++++++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi 
> b/arch/arm/boot/dts/sun8i-h3.dtsi
> index b36f9f423c39..a8a1db79f362 100644
> --- a/arch/arm/boot/dts/sun8i-h3.dtsi
> +++ b/arch/arm/boot/dts/sun8i-h3.dtsi
> @@ -85,6 +85,10 @@
>  	compatible = "allwinner,sun8i-h3-ccu";
>  };
> 
> +&display_clocks {
> +	compatible = "allwinner,sun8i-a83t-de2-clk";

Sorry, this compatible is wrong.

Please wait for my new version of this patchset to add a
allwinner,sun8i-h3-de2-clk and use it.

(A83T doesn't have DE mod clk, but H3 has)

> +};
> +
>  &mmc0 {
>  	compatible = "allwinner,sun7i-a20-mmc";
>  	clocks = <&ccu CLK_BUS_MMC0>,
> diff --git a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> index 11240a8313c2..76a4cbc99bdb 100644
> --- a/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> +++ b/arch/arm/boot/dts/sunxi-h3-h5.dtsi
> @@ -40,9 +40,11 @@
>   *     OTHER DEALINGS IN THE SOFTWARE.
>   */
> 
> +#include <dt-bindings/clock/sun8i-de2.h>
>  #include <dt-bindings/clock/sun8i-h3-ccu.h>
>  #include <dt-bindings/clock/sun8i-r-ccu.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/reset/sun8i-de2.h>
>  #include <dt-bindings/reset/sun8i-h3-ccu.h>
>  #include <dt-bindings/reset/sun8i-r-ccu.h>
> 
> @@ -85,6 +87,18 @@
>  		#size-cells = <1>;
>  		ranges;
> 
> +		display_clocks: clock@...0000 {
> +			/* compatible is in per SoC .dtsi file */
> +			reg = <0x01000000 0x100000>;
> +			clocks = <&ccu CLK_DE>,
> +				 <&ccu CLK_BUS_DE>;
> +			clock-names = "mod",
> +				      "bus";
> +			resets = <&ccu RST_BUS_DE>;
> +			#clock-cells = <1>;
> +			#reset-cells = <1>;
> +		};
> +
>  		syscon: syscon@...0000 {
>  			compatible = "allwinner,sun8i-h3-system-controller",
>  				"syscon";