From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> To: Chris Brandt <chris.brandt@renesas.com>, 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> Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, Mason Yang <masonccyang@mxic.com.tw> Subject: Re: [PATCH 6/6] dt-bindings: spi: Document Renesas SPIBSC bindings Date: Tue, 3 Dec 2019 12:14:30 +0300 Message-ID: <17e66541-41fb-26ed-c87b-15c59ab57bef@cogentembedded.com> (raw) In-Reply-To: <20191203034519.5640-7-chris.brandt@renesas.com> Hello! On 03.12.2019 6:45, Chris Brandt wrote: > Document the bindings used by the Renesas SPI bus space controller. > > Signed-off-by: Chris Brandt <chris.brandt@renesas.com> > --- > .../bindings/spi/spi-renesas-spibsc.txt | 48 +++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/spi-renesas-spibsc.txt > > diff --git a/Documentation/devicetree/bindings/spi/spi-renesas-spibsc.txt b/Documentation/devicetree/bindings/spi/spi-renesas-spibsc.txt > new file mode 100644 > index 000000000000..b5f7081d2d1e > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/spi-renesas-spibsc.txt > @@ -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) > +- reg: should contain three register areas: > + first for the base address of SPIBSC registers, > + second for the direct mapping read mode That's only 2 areas, not 3. :-) > +- 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. Are any other flash variants supported? > + > +Example: > + > + spibsc: spi@1f800000 { > + compatible = "renesas,r7s9210-spibsc", "renesas,spibsc"; > + reg = <0x1f800000 0x8c>, <0x20000000 0x10000000 >; > + clocks = <&cpg CPG_MOD 83>; > + power-domains = <&cpg>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + flash@0 { > + compatible = "jedec,spi-nor"; > + reg = <0>; > + spi-max-frequency = <40000000>; > + > + partitions { > + compatible = "fixed-partitions"; > + #address-cells = <1>; > + #size-cells = <1>; > + > + partition@0000000 { > + label = "u-boot"; > + reg = <0x00000000 0x80000>; > + }; > + }; > + }; MBR, Sergei
next prev parent reply index 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 [this message] 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 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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