[Letux-kernel] [PATCH v6 5/6] MIPS: DTS: JZ4780: define node for JZ4780 efuse

Paul Cercueil paul at crapouillou.net
Thu Feb 27 15:57:52 CET 2020


Hi Nikolaus,


Le mer., févr. 26, 2020 at 12:16, H. Nikolaus Schaller 
<hns at goldelico.com> a écrit :
> From: PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>
> 
> This patch brings support for the JZ4780 efuse. Currently it only 
> exposes
> a read only access to the entire 8K bits efuse memory and the
> ethernet mac address for the davicom dm9000 chip on the CI20 board.
> 
> It also changes the nemc reg range to avoid overlap.
> 
> Tested-by: Mathieu Malaterre <malat at debian.org>
> Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar at gmail.com>
> Signed-off-by: Mathieu Malaterre <malat at debian.org>
> Signed-off-by: H. Nikolaus Schaller <hns at goldelico.com>
> ---
>  arch/mips/boot/dts/ingenic/jz4780.dtsi | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi 
> b/arch/mips/boot/dts/ingenic/jz4780.dtsi
> index f928329b034b..1e266be28096 100644
> --- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
> +++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
> @@ -358,7 +358,7 @@
> 
>  	nemc: nemc at 13410000 {
>  		compatible = "ingenic,jz4780-nemc";
> -		reg = <0x13410000 0x10000>;
> +		reg = <0x13410000 0x4c>;

This is wrong, the real size of the register area is 1x15c.

>  		#address-cells = <2>;
>  		#size-cells = <1>;
>  		ranges = <1 0 0x1b000000 0x1000000
> @@ -373,6 +373,21 @@
>  		status = "disabled";
>  	};
> 
> +	efuse: efuse at 134100d0 {
> +		compatible = "ingenic,jz4780-efuse";
> +		reg = <0x134100d0 0x2c>;
> +
> +		clocks = <&cgu JZ4780_CLK_AHB2>;
> +		clock-names = "ahb2";

As explained in my response to the other patch, 'clock-names' can go 
away.

Cheers,
-Paul

> +
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +
> +		eth0_addr: eth-mac-addr at 0x22 {
> +			reg = <0x22 0x6>;
> +		};
> +	};
> +
>  	dma: dma at 13420000 {
>  		compatible = "ingenic,jz4780-dma";
>  		reg = <0x13420000 0x400
> --
> 2.23.0
> 




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