From: Miquel Raynal <miquel.raynal@bootlin.com>
To: "Rabara, Niravkumar L" <niravkumar.l.rabara@intel.com>
Cc: Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
"linux@treblig.org" <linux@treblig.org>,
Shen Lichuan <shenlichuan@vivo.com>,
Jinjie Ruan <ruanjinjie@huawei.com>,
"u.kleine-koenig@baylibre.com" <u.kleine-koenig@baylibre.com>,
"linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [PATCH v2 1/3] mtd: rawnand: cadence: support deferred prob when DMA is not ready
Date: Tue, 04 Feb 2025 10:20:17 +0100 [thread overview]
Message-ID: <87o6zi83se.fsf@bootlin.com> (raw)
In-Reply-To: <BL3PR11MB6532451B44E7C5D82F5EC4AFA2F42@BL3PR11MB6532.namprd11.prod.outlook.com> (Niravkumar L. Rabara's message of "Tue, 4 Feb 2025 07:48:57 +0000")
Hello,
> My apologies for the confusion.
> Slave DMA terminology used in cadence nand controller bindings and
> driver is indeed confusing.
>
> To answer your question it is,
> 1 - External DMA (Generic DMA controller).
>
> Nand controller IP do not have embedded DMA controller (2 - peripheral DMA).
>
> FYR, how external DMA is used.
> https://elixir.bootlin.com/linux/v6.13.1/source/drivers/mtd/nand/raw/cadence-nand-controller.c#L1962
In this case we should have a dmas property (and perhaps dma-names), no?
Miquèl
next prev parent reply other threads:[~2025-02-04 9:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-16 3:21 [PATCH v2 0/3] mtd: rawnand: cadence: improvement and fixes niravkumar.l.rabara
2025-01-16 3:21 ` [PATCH v2 1/3] mtd: rawnand: cadence: support deferred prob when DMA is not ready niravkumar.l.rabara
2025-01-21 9:52 ` Miquel Raynal
2025-01-29 9:17 ` Rabara, Niravkumar L
2025-01-29 10:02 ` Miquel Raynal
2025-01-30 3:51 ` Rabara, Niravkumar L
2025-01-30 15:19 ` Miquel Raynal
2025-02-04 7:48 ` Rabara, Niravkumar L
2025-02-04 9:20 ` Miquel Raynal [this message]
2025-02-04 10:43 ` Rabara, Niravkumar L
2025-02-04 13:32 ` Miquel Raynal
2025-02-04 14:11 ` Rabara, Niravkumar L
2025-02-06 17:01 ` Miquel Raynal
2025-02-07 9:12 ` Rabara, Niravkumar L
2025-02-07 13:22 ` Miquel Raynal
2025-01-16 3:21 ` [PATCH v2 2/3] mtd: rawnand: cadence: use dma_map_resource for sdma address niravkumar.l.rabara
2025-01-21 9:53 ` Miquel Raynal
2025-01-29 9:02 ` Rabara, Niravkumar L
2025-01-29 9:50 ` Miquel Raynal
2025-01-16 3:21 ` [PATCH v2 3/3] mtd: rawnand: cadence: fix incorrect dev context in dma_unmap_single niravkumar.l.rabara
2025-01-21 9:54 ` Miquel Raynal
2025-01-29 8:58 ` Rabara, Niravkumar L
2025-01-29 9:48 ` Miquel Raynal
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