spi: sh-msiof: Improve bindings
Documentation: - Add missing "interrupt-parent", "#address-cells", "#size-cells", and "clocks" properties, - Add missing default values for "num-cs", "renesas,tx-fifo-size" and "renesas,rx-fifo-size", - Add a reference to the pinctrl documentation. Implementation: - As "num-cs" is marked optional, provide a sensible default. Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Mark Brown <broonie@linaro.org>
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2 changed files with 18 additions and 8 deletions
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@ -1,12 +1,22 @@
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Renesas MSIOF spi controller
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Required properties:
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- compatible : "renesas,sh-msiof" for SuperH or
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"renesas,sh-mobile-msiof" for SH Mobile series
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- reg : Offset and length of the register set for the device
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- interrupts : interrupt line used by MSIOF
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- compatible : "renesas,sh-msiof" for SuperH, or
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"renesas,sh-mobile-msiof" for SH Mobile series.
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- reg : Offset and length of the register set for the device
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- interrupt-parent : The phandle for the interrupt controller that
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services interrupts for this device
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- interrupts : Interrupt specifier
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- #address-cells : Must be <1>
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- #size-cells : Must be <0>
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Optional properties:
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- num-cs : total number of chip-selects
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- renesas,tx-fifo-size : Overrides the default tx fifo size given in words
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- renesas,rx-fifo-size : Overrides the default rx fifo size given in words
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- clocks : Must contain a reference to the functional clock.
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- num-cs : Total number of chip-selects (default is 1)
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- renesas,tx-fifo-size : Overrides the default tx fifo size given in words
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(default is 64)
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- renesas,rx-fifo-size : Overrides the default rx fifo size given in words
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(default is 64)
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Pinctrl properties might be needed, too. See
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Documentation/devicetree/bindings/pinctrl/renesas,*.
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@ -664,7 +664,7 @@ static struct sh_msiof_spi_info *sh_msiof_spi_parse_dt(struct device *dev)
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{
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struct sh_msiof_spi_info *info;
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struct device_node *np = dev->of_node;
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u32 num_cs = 0;
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u32 num_cs = 1;
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info = devm_kzalloc(dev, sizeof(struct sh_msiof_spi_info), GFP_KERNEL);
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if (!info) {
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