Re: [PATCH v4 1/2] dt-bindings: nand: meson: add Amlogic NAND controller driver

From: Rob Herring <robh@kernel.org>
To: Jianxin Pan <jianxin.pan@amlogic.com>
Cc: Boris Brezillon <boris.brezillon@bootlin.com>,
	linux-mtd@lists.infradead.org,
	Liang Yang <liang.yang@amlogic.com>,
	Yixun Lan <yixun.lan@amlogic.com>,
	David Woodhouse <dwmw2@infradead.org>,
	Brian Norris <computersforpeace@gmail.com>,
	Marek Vasut <marek.vasut@gmail.com>,
	Richard Weinberger <richard@nod.at>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Neil Armstrong <narmstrong@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Carlo Caione <carlo@caione.org>,
	Kevin Hilman <khilman@baylibre.com>,
	Jian Hu <jian.hu@amlogic.com>,
	Hanjie Lin <hanjie.lin@amlogic.com>,
	Victor Wan <victor.wan@amlogic.com>,
	linux-amlogic@lists.infradead.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v4 1/2] dt-bindings: nand: meson: add Amlogic NAND controller driver
Date: Thu, 27 Sep 2018 13:16:53 -0500	[thread overview]
Message-ID: <20180927181653.GA22153@bogus> (raw)
In-Reply-To: <1537433449-65213-2-git-send-email-jianxin.pan@amlogic.com>

On Thu, Sep 20, 2018 at 04:50:48PM +0800, Jianxin Pan wrote:
> From: Liang Yang <liang.yang@amlogic.com>
> 
> Add Amlogic NAND controller dt-bindings for Meson SoC,
> Current this driver support GXBB/GXL/AXG platform.
> 
> Signed-off-by: Liang Yang <liang.yang@amlogic.com>
> Signed-off-by: Yixun Lan <yixun.lan@amlogic.com>
> ---
>  .../devicetree/bindings/mtd/amlogic,meson-nand.txt | 60 ++++++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
> 
> diff --git a/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
> new file mode 100644
> index 0000000..803df2a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/amlogic,meson-nand.txt
> @@ -0,0 +1,60 @@
> +Amlogic NAND Flash Controller (NFC) for GXBB/GXL/AXG family SoCs
> +
> +This file documents the properties in addition to those available in
> +the MTD NAND bindings.
> +
> +Required properties:
> +- compatible : contains one of:
> +  - "amlogic,meson-gxl-nfc"
> +  - "amlogic,meson-axg-nfc"
> +- clocks     :
> +	A list of phandle + clock-specifier pairs for the clocks listed
> +	in clock-names.
> +
> +- clock-names: Should contain the following:
> +	"core" - NFC module gate clock
> +	"device" - device clock from eMMC sub clock controller
> +
> +- amlogic,mmc-syscon	: Required for NAND clocks, it's shared with SD/eMMC
> +				controller port C
> +
> +Optional children nodes:
> +Children nodes represent the available nand chips.
> +
> +Other properties:
> +see Documentation/devicetree/bindings/mtd/nand.txt for generic bindings.
> +
> +Example demonstrate on AXG SoC:
> +
> +	sd_emmc_c_clkc: mmc@7000 {
> +		compatible = "amlogic,meson-axg-mmc-clkc", "syscon";
> +		reg = <0x0 0x7000 0x0 0x800>;
> +		status = "okay";
> +	};
> +
> +	nand: nfc@7800 {

nand-controller@7800

> +		compatible = "amlogic,meson-axg-nfc";
> +		reg = <0x0 0x7800 0x0 0x100>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		interrupts = <GIC_SPI 34 IRQ_TYPE_EDGE_RISING>;
> +		status = "disabled";
> +
> +		clocks = <&clkc CLKID_SD_EMMC_C>,
> +			<&sd_emmc_c_clkc CLKID_MMC_DIV>;
> +		clock-names = "core", "device";
> +		amlogic,mmc-syscon = <&sd_emmc_c_clkc>;
> +
> +		status = "okay";

Don't show status in examples, plus you have it twice.

> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&nand_pins>;
> +
> +		nand@0 {
> +			reg = <0>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +
> +			nand-on-flash-bbt;
> +		};
> +	};
> -- 
> 1.9.1
> 