From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Chris Brandt <chris.brandt@renesas.com>
Cc: Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
linux-spi <linux-spi@vger.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
linux-clk <linux-clk@vger.kernel.org>,
Mason Yang <masonccyang@mxic.com.tw>,
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Subject: Re: [PATCH 6/6] dt-bindings: spi: Document Renesas SPIBSC bindings
Date: Tue, 3 Dec 2019 19:57:21 +0100 [thread overview]
Message-ID: <CAMuHMdVBYpuoK7hcyNLK-mAdpTQz3ohTGXuYdFPHdpU5RoPr6Q@mail.gmail.com> (raw)
In-Reply-To: <20191203034519.5640-7-chris.brandt@renesas.com>
Hi Chris,
On Tue, Dec 3, 2019 at 4:47 AM Chris Brandt <chris.brandt@renesas.com> wrote:
> Document the bindings used by the Renesas SPI bus space controller.
>
> Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Thanks for your patch!
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/spi-renesas-spibsc.txt
Checkpatch.pl says:
WARNING: DT bindings should be in DT schema format. See:
Documentation/devicetree/writing-schema.rst
> @@ -0,0 +1,48 @@
> +Renesas SPI Bus Space Controller (SPIBSC) Device Tree Bindings
> +
> +Otherwise referred to as the "SPI Multi I/O Bus Controller" in SoC hardware
> +manuals. This controller was designed specifically for accessing SPI flash
> +devices.
> +
> +Required properties:
> +- compatible: should be an SoC-specific compatible value, followed by
> + "renesas,spibsc" as a fallback.
> + supported SoC-specific values are:
> + "renesas,r7s72100-spibsc" (RZ/A1)
> + "renesas,r7s9210-spibsc" (RZ/A2)
Is the fallback valid for RZ/A1, which has its own special match entry
in the driver?
Will it be valid for R-Car Gen3?
If not, you may want to drop it completely.
> +- reg: should contain three register areas:
> + first for the base address of SPIBSC registers,
> + second for the direct mapping read mode
> +- clocks: should contain the clock phandle/specifier pair for the module clock.
> +- power-domains: should contain the power domain phandle/specifier pair.
> +- #address-cells: should be 1
> +- #size-cells: should be 0
> +- flash: should be represented by a subnode of the SPIBSC node,
> + its "compatible" property contains "jedec,spi-nor" if SPI is used.
What about the "mtd-rom" use for e.g. XIP?
interrupts? RZ/A2M seems to have an SPIBSC interrupt, RZ/A1 hasn't.
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
next prev parent reply other threads:[~2019-12-03 18:57 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-03 3:45 [PATCH 0/6] spi: Add Renesas SPIBSC controller Chris Brandt
2019-12-03 3:45 ` [PATCH 1/6] clk: renesas: mstp: Add critical clock from device tree support Chris Brandt
2019-12-03 18:32 ` Geert Uytterhoeven
2019-12-03 18:46 ` Chris Brandt
2019-12-03 18:51 ` Geert Uytterhoeven
2019-12-03 3:45 ` [PATCH 2/6] ARM: dts: r7s72100: Add SPIBSC clocks Chris Brandt
2019-12-03 18:42 ` Geert Uytterhoeven
2019-12-03 18:57 ` Chris Brandt
2019-12-03 19:12 ` Geert Uytterhoeven
2019-12-04 8:38 ` Lee Jones
2019-12-04 9:03 ` Geert Uytterhoeven
2019-12-04 9:47 ` Lee Jones
2019-12-04 11:00 ` Chris Brandt
2019-12-03 3:45 ` [PATCH 3/6] clk: renesas: r7s9210: Add SPIBSC clock Chris Brandt
2019-12-03 18:49 ` Geert Uytterhoeven
2019-12-03 19:09 ` Chris Brandt
2019-12-03 20:40 ` Geert Uytterhoeven
2019-12-04 3:09 ` Chris Brandt
2019-12-03 3:45 ` [PATCH 4/6] spi: Add SPIBSC driver Chris Brandt
2019-12-03 14:19 ` Mark Brown
2019-12-03 15:00 ` Chris Brandt
2019-12-03 18:29 ` Geert Uytterhoeven
2019-12-04 11:25 ` Mark Brown
2019-12-04 12:14 ` Geert Uytterhoeven
2019-12-04 15:51 ` Chris Brandt
2019-12-04 16:49 ` Mark Brown
2019-12-03 18:28 ` Geert Uytterhoeven
2019-12-04 11:18 ` Mark Brown
2019-12-04 22:12 ` Chris Brandt
2019-12-03 3:45 ` [PATCH 5/6] ARM: dts: r7s9210: Add SPIBSC Device support Chris Brandt
2019-12-03 18:59 ` Geert Uytterhoeven
2019-12-03 22:38 ` Chris Brandt
2019-12-04 7:57 ` Geert Uytterhoeven
2019-12-04 11:04 ` Chris Brandt
2019-12-03 3:45 ` [PATCH 6/6] dt-bindings: spi: Document Renesas SPIBSC bindings Chris Brandt
2019-12-03 9:14 ` Sergei Shtylyov
2019-12-03 13:27 ` Chris Brandt
2019-12-03 16:04 ` Sergei Shtylyov
2019-12-03 16:35 ` Chris Brandt
2019-12-03 18:57 ` Geert Uytterhoeven [this message]
2019-12-03 20:39 ` Geert Uytterhoeven
2019-12-04 2:54 ` Chris Brandt
2019-12-04 8:56 ` Geert Uytterhoeven
2019-12-04 13:31 ` Chris Brandt
2019-12-05 15:48 ` Geert Uytterhoeven
2019-12-05 16:00 ` Chris Brandt
2019-12-04 8:40 ` Geert Uytterhoeven
2019-12-03 22:33 ` Chris Brandt
2019-12-04 8:43 ` Geert Uytterhoeven
2019-12-04 11:19 ` Chris Brandt
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