| Message ID | 20160706145326.2658600-2-arnd@arndb.de (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | ea2ff61ba3f8239483f5cd823ac0113d194b469f |
| Headers | show |
On Wed, Jul 06, 2016 at 04:53:13PM +0200, Arnd Bergmann wrote: > This documents the binding used by Alexander Shiyan's DT support for > the clps711x SPI controller. Please use subject lines matching the style for the subsystem. This makes it easier for people to identify relevant patches.
On Thursday, July 7, 2016 11:25:46 AM CEST Mark Brown wrote: > On Wed, Jul 06, 2016 at 04:53:13PM +0200, Arnd Bergmann wrote: > > This documents the binding used by Alexander Shiyan's DT support for > > the clps711x SPI controller. > > Please use subject lines matching the style for the subsystem. This > makes it easier for people to identify relevant patches. I tried, though it's a bit tricky for dt-bindings. When I created the patch, using 'dt-bindings: $SUBSYSTEM' appeared to be the most common one, ahead of '$SUBSYSTEM' (mainly used for combined patches) and other random prefixes. I'll resend it with just 'spi:', but I don't think there is a broad consensus on this in the existing patches. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Jul 07, 2016 at 11:48:25AM +0200, Arnd Bergmann wrote: > On Thursday, July 7, 2016 11:25:46 AM CEST Mark Brown wrote: > > On Wed, Jul 06, 2016 at 04:53:13PM +0200, Arnd Bergmann wrote: > > > This documents the binding used by Alexander Shiyan's DT support for > > > the clps711x SPI controller. > > > > Please use subject lines matching the style for the subsystem. This > > makes it easier for people to identify relevant patches. > > I tried, though it's a bit tricky for dt-bindings. When I created the > patch, using 'dt-bindings: $SUBSYSTEM' appeared to be the most common > one, ahead of '$SUBSYSTEM' (mainly used for combined patches) > and other random prefixes. There isn't. Mark and I don't agree here as the former is my preference, but I care less than he does. :) Rob -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/spi/spi-clps711x.txt b/Documentation/devicetree/bindings/spi/spi-clps711x.txt new file mode 100644 index 000000000000..4c3ec13f423f --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-clps711x.txt @@ -0,0 +1,33 @@ +Serial Peripheral Interface on Cirrus Logic CL-PS71xx, EP72xx, EP73xx + +Required properties +- #address-cells: must be <1> +- #size-cells: must be <0> +- compatible: should include "cirrus,ep7209-spi" +- reg: Address and length of one register range +- interrupts: one interrupt line +- clocks: One entry, refers to the SPI bus clock +- cs-gpios: Specifies the gpio pins to be used for chipselects. + See: Documentation/devicetree/bindings/spi/spi-bus.txt + +An additional register is present in the system controller, +which is assumed to be in the same device tree, with and marked +as compatible with "cirrus,ep7209-syscon3". + +Example: + +spi@80000500 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "cirrus,ep7209-spi"; + reg = <0x80000500 0x4>; + interrupts = <15>; + clocks = <&clks CLPS711X_CLK_SPI>; + status = "disabled"; +}; + +syscon3: syscon@80002200 { + compatible = "cirrus,ep7209-syscon3", "syscon"; + reg = <0x80002200 0x40>; +}; +
This documents the binding used by Alexander Shiyan's DT support for the clps711x SPI controller. I've left the file name to match the ARM platform port name "clps711x" for consistency with the other bindings, even though the compatible string refers to the later ep7309 chip. Linux no longer supports the old clps711x and ep72xx product lines, but we still use the name. The entire family is now discontinued by the manufacturer. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Shiyan <shc_work@mail.ru> --- .../devicetree/bindings/spi/spi-clps711x.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-clps711x.txt