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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


  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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