From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Mason Yang <masonccyang@mxic.com.tw>
Cc: Mark Brown <broonie@kernel.org>,
Marek Vasut <marek.vasut@gmail.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-spi <linux-spi@vger.kernel.org>,
Boris Brezillon <bbrezillon@kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
juliensu@mxic.com.tw, Simon Horman <horms@verge.net.au>,
zhengxunli@mxic.com.tw
Subject: Re: [PATCH v6 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC-IF controller bindings
Date: Fri, 18 Jan 2019 09:03:49 +0100 [thread overview]
Message-ID: <CAMuHMdXiW=4qgZGFqvwGHL7V3ZHfQ2EJ2B96dG14B-jh5+XqOw@mail.gmail.com> (raw)
In-Reply-To: <1547790855-22120-3-git-send-email-masonccyang@mxic.com.tw>
Hi Mason,
On Fri, Jan 18, 2019 at 6:55 AM Mason Yang <masonccyang@mxic.com.tw> wrote:
> Document the bindings used by the Renesas R-Car Gen3 RPC-IF controller.
>
> Signed-off-by: Mason Yang <masonccyang@mxic.com.tw>
Thanks for the update!
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/spi/spi-renesas-rpc.txt
> @@ -0,0 +1,37 @@
> +Renesas R-Car Gen3 RPC-IF controller Device Tree Bindings
> +----------------------------------------------------------
> +
> +Required properties:
> +- compatible: should be
compatible: should be an SoC-specific compatible value, followed by
"renesas,rcar-gen3-rpc" as a fallback.
Examples of the latter are:
- "renesas,r8a7795-rpc" (R-Car H3).
This makes it future-proof, in case the RPC on a specific SoC version needs
to be handled specially. We already know that is the case for R-Car V3M.
> +- #address-cells: should be 1
> +- #size-cells: should be 0
> +- reg: should contain three register areas:
> + first for the base address of rpc-if registers,
> + second for the direct mapping read mode and
> + third for the write buffer area.
> +- reg-names: should contain "regs", "dirmap" and "wbuf"
> +- clock-names: should contain "rpc"
> +- clocks: should contain 1 entries for the module's clock
> +
> +Example:
> +
> + rpc: rpc@ee200000 {
> + compatible = "renesas,rcar-gen3-rpc";
compatible = "renesas,r8a7795-rpc," renesas,rcar-gen3-rpc";
> + reg = <0 0xee200000 0 0x7fff>, <0 0x08000000 0 0x4000000>,
> + <0 0xee208000 0 0x100>;
> + reg-names = "regs", "dirmap", "<wbuf>;
> + clocks = <&cpg CPG_MOD 917>;
> + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>;
> + resets = <&cpg 917>;
> + clock-names = "rpc";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + flash@0 {
> + compatible = "jedec,spi-nor";
> + reg = <0>;
> + spi-max-frequency = <40000000>;
> + spi-tx-bus-width = <1>;
> + spi-rx-bus-width = <1>;
> + };
> + };
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:[~2019-01-18 8:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-18 5:54 [PATCH v6 0/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI driver Mason Yang
2019-01-18 5:54 ` [PATCH v6 1/2] spi: Add Renesas R-Car Gen3 RPC-IF SPI controller driver Mason Yang
2019-01-18 8:25 ` Geert Uytterhoeven
2019-01-18 19:43 ` Sergei Shtylyov
[not found] ` <OFE50FED81.5C117A38-ON48258389.0012FCE2-48258389.00139BD2@mxic.com.tw>
2019-01-21 18:14 ` Sergei Shtylyov
2019-01-18 5:54 ` [PATCH v6 2/2] dt-bindings: spi: Document Renesas R-Car Gen3 RPC-IF controller bindings Mason Yang
2019-01-18 6:16 ` Marek Vasut
[not found] ` <OF914E6438.79205FE6-ON48258386.002973E8-48258386.002A41F0@mxic.com.tw>
2019-01-18 7:46 ` Marek Vasut
2019-01-18 8:23 ` Sergei Shtylyov
2019-01-18 8:03 ` Geert Uytterhoeven [this message]
2019-01-18 8:08 ` Marek Vasut
2019-01-18 8:10 ` Geert Uytterhoeven
2019-01-18 8:12 ` Marek Vasut
[not found] ` <OFBD5366C8.433ADACB-ON48258386.00336667-48258386.00340E20@mxic.com.tw>
2019-01-18 10:39 ` Geert Uytterhoeven
2019-01-18 8:18 ` Sergei Shtylyov
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