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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Magnus Damm <magnus.damm@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	"open list:SERIAL DRIVERS" <linux-serial@vger.kernel.org>,
	Milan Stevanovic <milan.stevanovic@se.com>,
	Jimmy Lalande <jimmy.lalande@se.com>,
	Pascal Eberhard <pascal.eberhard@se.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Herve Codina <herve.codina@bootlin.com>,
	Clement Leger <clement.leger@bootlin.com>,
	Ilpo Jarvinen <ilpo.jarvinen@linux.intel.com>
Subject: Re: [PATCH v6 10/12] ARM: dts: r9a06g032: Fill the UART DMA properties
Date: Thu, 28 Apr 2022 11:09:46 +0200	[thread overview]
Message-ID: <CAMuHMdW_oqwbDR4HMm-Kz7jmg8FyJg-Dzi-xyBekZEdcdzBZDg@mail.gmail.com> (raw)
In-Reply-To: <20220421095323.101811-11-miquel.raynal@bootlin.com>

On Thu, Apr 21, 2022 at 11:53 AM Miquel Raynal
<miquel.raynal@bootlin.com> wrote:
> UART 0 to 2 do not have DMA support, while UART 3 to 7 do.
>
> Fill the "dmas" and "dma-names" properties for each of these nodes.
>
> Please mind that these nodes go through the dmamux node which will
> redirect the requests to the right DMA controller. The first 4 cells of
> the "dmas" properties will be transferred as-is to the DMA
> controllers. The last 2 cells are consumed by the dmamux. Which means
> cell 0 and 4 are almost redundant, one giving the controller request ID
> and the other the dmamux channel which is a 1:1 translation of the
> request IDs, shifted by 16 when pointing to the second DMA controller.
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  reply	other threads:[~2022-04-28  9:19 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-21  9:53 [PATCH v6 00/12] serial: 8250: dw: RZN1 DMA support Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 01/12] serial: 8250: dw: Move definitions to the shared header Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 02/12] serial: 8250: dw: Create a generic platform data structure Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 03/12] serial: 8250: dw: Move the USR register to pdata Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 04/12] serial: 8250: dw: Allow to use a fallback CPR value if not synthesized Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 05/12] serial: 8250: dma: Allow driver operations before starting DMA transfers Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 06/12] serial: 8250: dw: Introduce an rx_timeout variable in the IRQ path Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 07/12] serial: 8250: dw: Move the IO accessors to 8250_dwlib.h Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 08/12] serial: 8250: dw: Add support for DMA flow controlling devices Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 09/12] serial: 8250: dw: Improve RZN1 support Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 10/12] ARM: dts: r9a06g032: Fill the UART DMA properties Miquel Raynal
2022-04-28  9:09   ` Geert Uytterhoeven [this message]
2022-05-03  8:36     ` Geert Uytterhoeven
2022-04-21  9:53 ` [PATCH v6 11/12] bestla: Enable DMA, UART3 and UART4 Miquel Raynal
2022-04-21 10:21   ` Miquel Raynal
2022-04-22 14:04     ` Greg Kroah-Hartman
2022-04-22 14:26       ` Geert Uytterhoeven
2022-04-22 15:52         ` Miquel Raynal
2022-04-21  9:53 ` [PATCH v6 12/12] bestla: Add support for RZN1 dmamux Miquel Raynal

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