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authorGeert Uytterhoeven <geert+renesas@linux-m68k.org>2014-01-28 09:21:38 (GMT)
committerMark Brown <broonie@linaro.org>2014-01-29 17:56:57 (GMT)
commit426ef76dd8a394a0e04d096941cd9acb49539a3e (patch)
treec6abc0e61b2b5e18fdbf45f982bb6b02067f3596 /Documentation/devicetree/bindings/spi
parent29f397b739ceef90c8b848f6579cbacd088e896e (diff)
spi: rspi: Add DT support
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/spi')
-rw-r--r--Documentation/devicetree/bindings/spi/spi-rspi.txt59
1 files changed, 59 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-rspi.txt b/Documentation/devicetree/bindings/spi/spi-rspi.txt
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+++ b/Documentation/devicetree/bindings/spi/spi-rspi.txt
@@ -0,0 +1,59 @@
+Device tree configuration for Renesas RSPI/QSPI driver
+
+Required properties:
+- compatible : For Renesas Serial Peripheral Interface on legacy SH:
+ "renesas,rspi-<soctype>", "renesas,rspi" as fallback.
+ For Renesas Serial Peripheral Interface on RZ/A1H:
+ "renesas,rspi-<soctype>", "renesas,rspi-rz" as fallback.
+ For Quad Serial Peripheral Interface on R-Car Gen2:
+ "renesas,qspi-<soctype>", "renesas,qspi" as fallback.
+ Examples of valid soctypes are "sh7757" (SH),
+ "r7s72100" (RZ/A1H), "r8a7790" (R-Car H2), and
+ "r8a7791" (R-Car M2).
+- reg : Address start and address range size of the device
+- interrupts : A list of interrupt-specifiers, one for each entry in
+ interrupt-names.
+ If interrupt-names is not present, an interrupt specifier
+ for a single muxed interrupt.
+- interrupt-names : A list of interrupt names. Should contain (if present):
+ - "error" for SPEI,
+ - "rx" for SPRI,
+ - "tx" to SPTI,
+ - "mux" for a single muxed interrupt.
+- interrupt-parent : The phandle for the interrupt controller that
+ services interrupts for this device.
+- num-cs : Number of chip selects. Some RSPI cores have more than 1.
+- #address-cells : Must be <1>
+- #size-cells : Must be <0>
+
+Optional properties:
+- clocks: : Must contain a reference to the functional clock.
+
+Pinctrl properties might be needed, too. See
+Documentation/devicetree/bindings/pinctrl/renesas,*.
+
+Examples:
+
+ spi0: spi@e800c800 {
+ compatible = "renesas,rspi-r7s72100", "renesas,rspi-rz";
+ reg = <0xe800c800 0x24>;
+ interrupts = <0 238 IRQ_TYPE_LEVEL_HIGH>,
+ <0 239 IRQ_TYPE_LEVEL_HIGH>,
+ <0 240 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "error", "rx", "tx";
+ interrupt-parent = <&gic>;
+ num-cs = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ spi: spi@e6b10000 {
+ compatible = "renesas,qspi-r8a7791", "renesas,qspi";
+ reg = <0 0xe6b10000 0 0x2c>;
+ interrupt-parent = <&gic>;
+ interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>;
+ num-cs = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };

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