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From: Boris Brezillon <boris.brezillon@bootlin.com>
To: Stefan Agner <stefan@agner.ch>
Cc: dwmw2@infradead.org, computersforpeace@gmail.com,
	marek.vasut@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com,
	thierry.reding@gmail.com, benjamin.lindqvist@endian.se,
	pgaikwad@nvidia.com, dev@lynxeye.de, mirza.krak@gmail.com,
	richard@nod.at, pdeschrijver@nvidia.com,
	linux-kernel@vger.kernel.org, krzk@kernel.org,
	jonathanh@nvidia.com, devicetree@vger.kernel.org,
	linux-mtd@lists.infradead.org, marcel@ziswiler.com,
	miquel.raynal@bootlin.com, linux-tegra@vger.kernel.org,
	digetx@gmail.com
Subject: Re: [PATCH v3 3/6] mtd: rawnand: tegra: add devicetree binding
Date: Fri, 1 Jun 2018 09:30:25 +0200	[thread overview]
Message-ID: <20180601093025.2817ff30@bbrezillon> (raw)
In-Reply-To: <20180531221637.6017-4-stefan@agner.ch>

On Fri,  1 Jun 2018 00:16:34 +0200
Stefan Agner <stefan@agner.ch> wrote:

> This adds the devicetree binding for the Tegra 2 NAND flash
> controller.
> 
> Signed-off-by: Lucas Stach <dev@lynxeye.de>
> Signed-off-by: Stefan Agner <stefan@agner.ch>
> ---
>  .../bindings/mtd/nvidia-tegra20-nand.txt      | 64 +++++++++++++++++++
>  1 file changed, 64 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt
> 
> diff --git a/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt b/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt
> new file mode 100644
> index 000000000000..5cd984ef046b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt
> @@ -0,0 +1,64 @@
> +NVIDIA Tegra NAND Flash controller
> +
> +Required properties:
> +- compatible: Must be one of:
> +  - "nvidia,tegra20-nand"

As discussed previously, I prefer "nvidia,tegra20-nand-controller" or
"nvidia,tegra20-nfc".

> +- reg: MMIO address range
> +- interrupts: interrupt output of the NFC controller
> +- clocks: Must contain an entry for each entry in clock-names.
> +  See ../clocks/clock-bindings.txt for details.
> +- clock-names: Must include the following entries:
> +  - nand
> +- resets: Must contain an entry for each entry in reset-names.
> +  See ../reset/reset.txt for details.
> +- reset-names: Must include the following entries:
> +  - nand
> +
> +Optional children nodes:
> +Individual NAND chips are children of the NAND controller node. Currently
> +only one NAND chip supported.
> +
> +Required children node properties:
> +- reg: An integer ranging from 1 to 6 representing the CS line to use.
> +
> +Optional children node properties:
> +- nand-ecc-mode: String, operation mode of the NAND ecc mode. Currently only
> +		 "hw" is supported.
> +- nand-ecc-algo: string, algorithm of NAND ECC.
> +		 Supported values with "hw" ECC mode are: "rs", "bch".
> +- nand-bus-width : See nand.txt
> +- nand-on-flash-bbt: See nand.txt
> +- nand-ecc-strength: integer representing the number of bits to correct
> +		     per ECC step (always 512). Supported strength using HW ECC
> +		     modes are:
> +		     - RS: 4, 6, 8
> +		     - BCH: 4, 8, 14, 16
> +- nand-ecc-maximize: See nand.txt
> +- nand-is-boot-medium: Makes sure only ECC strengths supported by the boot ROM
> +		       are choosen.
> +- wp-gpios: GPIO specifier for the write protect pin.
> +
> +Optional child node of NAND chip nodes:
> +Partitions: see partition.txt
> +
> +  Example:
> +	nand@70008000 {

	nand-controller@70008000 {

> +		compatible = "nvidia,tegra20-nand";

		compatible = "nvidia,tegra20-nand-controller";

or

		compatible = "nvidia,tegra20-nfc";

> +		reg = <0x70008000 0x100>;
> +		interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&tegra_car TEGRA20_CLK_NDFLASH>;
> +		clock-names = "nand";
> +		resets = <&tegra_car 13>;
> +		reset-names = "nand";
> +
> +		nand-chip@0 {

		nand@0 {

> +			reg = <0>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			nand-bus-width = <8>;
> +			nand-on-flash-bbt;
> +			nand-ecc-algo = "bch";
> +			nand-ecc-strength = <8>;
> +			wp-gpios = <&gpio TEGRA_GPIO(S, 0) GPIO_ACTIVE_LOW>;
> +		};
> +	};

With this addressed,

Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>

  reply	other threads:[~2018-06-01  7:30 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-31 22:16 [PATCH v3 0/6] mtd: rawnand: add NVIDIA Tegra NAND flash support Stefan Agner
2018-05-31 22:16 ` [PATCH v3 1/6] mtd: rawnand: add Reed-Solomon error correction algorithm Stefan Agner
2018-06-01  7:26   ` Boris Brezillon
2018-06-01  9:25     ` Boris Brezillon
2018-06-01 13:34       ` Stefan Agner
2018-06-01 13:43         ` Boris Brezillon
2018-05-31 22:16 ` [PATCH v3 2/6] mtd: rawnand: add an option to specify NAND chip as a boot device Stefan Agner
2018-06-01  7:26   ` Boris Brezillon
2018-06-05 20:11   ` Rob Herring
2018-06-06  7:28     ` Boris Brezillon
2018-05-31 22:16 ` [PATCH v3 3/6] mtd: rawnand: tegra: add devicetree binding Stefan Agner
2018-06-01  7:30   ` Boris Brezillon [this message]
2018-06-05 20:19     ` Dmitry Osipenko
2018-06-06 10:39       ` Thierry Reding
2018-06-06 10:45         ` Boris Brezillon
2018-06-06 11:07           ` Thierry Reding
2018-06-06 12:14             ` Stefan Agner
2018-06-06 12:31               ` Boris Brezillon
2018-06-05 20:13   ` Rob Herring
2018-05-31 22:16 ` [PATCH v3 4/6] mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver Stefan Agner
2018-06-01  9:20   ` Dmitry Osipenko
2018-06-08 21:51     ` Stefan Agner
2018-06-09  5:52       ` Boris Brezillon
2018-06-09  6:23         ` Stefan Agner
2018-06-09  6:41           ` Boris Brezillon
2018-06-09  6:46             ` Boris Brezillon
2018-06-09  6:55               ` Boris Brezillon
2018-06-09  6:51             ` Stefan Agner
2018-06-09 12:21       ` Dmitry Osipenko
2018-06-10 11:09         ` Stefan Agner
2018-06-10 15:00           ` Dmitry Osipenko
2018-06-10 15:32             ` Boris Brezillon
2018-06-11 11:45               ` Dmitry Osipenko
2018-06-11 11:50                 ` Boris Brezillon
2018-06-11 13:10                   ` Dmitry Osipenko
2018-06-04 17:16   ` Randolph Maaßen
2018-06-04 20:56     ` Stefan Agner
2018-06-09  5:55   ` Boris Brezillon
2018-06-09  7:18   ` Boris Brezillon
2018-05-31 22:16 ` [PATCH v3 5/6] ARM: dts: tegra: add Tegra20 NAND flash controller node Stefan Agner
2018-05-31 22:16 ` [PATCH v3 6/6] ARM: dts: tegra: enable NAND flash on Colibri T20 Stefan Agner

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