From: Chris Brandt <chris.brandt@renesas.com> To: 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>, Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>, Chris Brandt <chris.brandt@renesas.com> Subject: [PATCH 6/6] dt-bindings: spi: Document Renesas SPIBSC bindings Date: Mon, 2 Dec 2019 22:45:19 -0500 Message-ID: <20191203034519.5640-7-chris.brandt@renesas.com> (raw) In-Reply-To: <20191203034519.5640-1-chris.brandt@renesas.com> 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 +- 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. + +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>; + }; + }; + }; -- 2.23.0
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 ` Chris Brandt [this message] 2019-12-03 9:14 ` [PATCH 6/6] dt-bindings: spi: Document Renesas SPIBSC bindings 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 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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