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| author | Geert Uytterhoeven <geert+renesas@linux-m68k.org> | 2014-02-25 14:21:08 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-02-27 14:33:47 +0400 |
| commit | 32d3b2d1ddeafe105ab6f738fba427242141194e (patch) | |
| tree | 66074650e2ae2eb772472b50ffcb62287dd61802 | |
| parent | 4867147bcde8fa94f56fc6e8149c57ca65c4e5ed (diff) | |
| download | linux-32d3b2d1ddeafe105ab6f738fba427242141194e.tar.xz | |
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>
| -rw-r--r-- | Documentation/devicetree/bindings/spi/sh-msiof.txt | 24 | ||||
| -rw-r--r-- | drivers/spi/spi-sh-msiof.c | 2 |
2 files changed, 18 insertions, 8 deletions
diff --git a/Documentation/devicetree/bindings/spi/sh-msiof.txt b/Documentation/devicetree/bindings/spi/sh-msiof.txt index e6222106ca36..eae3c8c9300e 100644 --- a/Documentation/devicetree/bindings/spi/sh-msiof.txt +++ b/Documentation/devicetree/bindings/spi/sh-msiof.txt @@ -1,12 +1,22 @@ Renesas MSIOF spi controller Required properties: -- compatible : "renesas,sh-msiof" for SuperH or - "renesas,sh-mobile-msiof" for SH Mobile series -- reg : Offset and length of the register set for the device -- interrupts : interrupt line used by MSIOF +- compatible : "renesas,sh-msiof" for SuperH, or + "renesas,sh-mobile-msiof" for SH Mobile series. +- reg : Offset and length of the register set for the device +- interrupt-parent : The phandle for the interrupt controller that + services interrupts for this device +- interrupts : Interrupt specifier +- #address-cells : Must be <1> +- #size-cells : Must be <0> Optional properties: -- num-cs : total number of chip-selects -- renesas,tx-fifo-size : Overrides the default tx fifo size given in words -- renesas,rx-fifo-size : Overrides the default rx fifo size given in words +- clocks : Must contain a reference to the functional clock. +- num-cs : Total number of chip-selects (default is 1) +- renesas,tx-fifo-size : Overrides the default tx fifo size given in words + (default is 64) +- renesas,rx-fifo-size : Overrides the default rx fifo size given in words + (default is 64) + +Pinctrl properties might be needed, too. See +Documentation/devicetree/bindings/pinctrl/renesas,*. diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 6e2ba62ceb63..181efd049d12 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -664,7 +664,7 @@ static struct sh_msiof_spi_info *sh_msiof_spi_parse_dt(struct device *dev) { struct sh_msiof_spi_info *info; struct device_node *np = dev->of_node; - u32 num_cs = 0; + u32 num_cs = 1; info = devm_kzalloc(dev, sizeof(struct sh_msiof_spi_info), GFP_KERNEL); if (!info) { |