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From: Marek Vasut <marek.vasut@gmail.com>
To: Richard Weinberger <richard@nod.at>, devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org,
	dinguyen@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com,
	computersforpeace@gmail.com, dwmw2@infradead.org,
	miquel.raynal@bootlin.com, boris.brezillon@bootlin.com,
	yamada.masahiro@socionext.com, "See,
	Chin Liang" <chin.liang.see@intel.com>
Subject: Re: [PATCH] arm: dts: socfpga: denali needs nand_x_clk too
Date: Wed, 20 Jun 2018 06:52:09 +0200	[thread overview]
Message-ID: <ba7b5ee8-c9f0-45a1-67ec-3d1f510f6c24@gmail.com> (raw)
In-Reply-To: <20180619120719.26921-1-richard@nod.at>

On 06/19/2018 02:07 PM, Richard Weinberger wrote:
> The denali NAND flash controller needs at least two clocks to operate,
> nand_clk and nand_x_clk.
> Since 1bb88666775e ("mtd: nand: denali: handle timing parameters by
> setup_data_interface()") nand_x_clk is used to derive timing settings.
> 
> Signed-off-by: Richard Weinberger <richard@nod.at>
> ---
> Strictly speaking denali needs a ecc_clk too, but AFAIK such a clock
> is not present on this SoC.
> But my SoCFPGA knowledge is very limited.
> 
> Thanks,
> //richard

It looks sane, but I cannot test it right now, since I'm on vacation.
I hope Dinh/Chin can jump in.

> ---
>  arch/arm/boot/dts/socfpga.dtsi | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi
> index 486d4e7433ed..562f7b375bbd 100644
> --- a/arch/arm/boot/dts/socfpga.dtsi
> +++ b/arch/arm/boot/dts/socfpga.dtsi
> @@ -754,7 +754,8 @@
>  			reg-names = "nand_data", "denali_reg";
>  			interrupts = <0x0 0x90 0x4>;
>  			dma-mask = <0xffffffff>;
> -			clocks = <&nand_clk>;
> +			clocks = <&nand_clk>, <&nand_x_clk>;
> +			clock-names = "nand", "nand_x";
>  			status = "disabled";
>  		};
>  
> 


-- 
Best regards,
Marek Vasut

  reply	other threads:[~2018-06-20  4:52 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-19 12:07 Richard Weinberger
2018-06-20  4:52 ` Marek Vasut [this message]
2018-06-20  5:27   ` Richard Weinberger
2018-06-21  4:41     ` Marek Vasut
2018-06-22 14:37 ` Masahiro Yamada
2018-06-22 15:58   ` Richard Weinberger
2018-06-25 14:50     ` Dinh Nguyen
2018-06-25 14:55       ` Boris Brezillon
2018-06-26  2:38         ` Masahiro Yamada
2018-06-26 18:09           ` Miquel Raynal
2018-06-27  2:52             ` Masahiro Yamada
2018-06-27 14:55               ` Dinh Nguyen
2018-06-27 21:34                 ` Boris Brezillon
2018-07-02  1:35                 ` Masahiro Yamada
2018-07-02 13:19                   ` Dinh Nguyen

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