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spi: efm32: properly namespace location property 

While reviewing an i2c driver for efm32 that needs a similar property
Wolfram Sang pointed out that "location" is a too generic name for
something that is efm32 specific. So add an appropriate namespace and
fall back to the generic name in case of failure.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Uwe Kleine-König 2014-03-14 21:34:22 +01:00 committed by Mark Brown
parent f9f4cbde58
commit f2bb31057a
2 changed files with 6 additions and 3 deletions
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4
Documentation/devicetree/bindings/spi/efm32-spi.txt
View File

@ -8,7 +8,7 @@ Required properties:
- interrupts: pair specifying rx and tx irq
- clocks: phandle to the spi clock
- cs-gpios: see spi-bus.txt
- location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values.
- efm32,location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values.
Example:
@ -20,7 +20,7 @@ spi1: spi@0x4000c400 { /* USART1 */
interrupts = <15 16>;
clocks = <&cmu 20>;
cs-gpios = <&gpio 51 1>; // D3
location = <1>;
efm32,location = <1>;
status = "ok";
ks8851@0 {

5
drivers/spi/spi-efm32.c
View File

@ -294,7 +294,10 @@ static void efm32_spi_probe_dt(struct platform_device *pdev,
u32 location;
int ret;
ret = of_property_read_u32(np, "location", &location);
ret = of_property_read_u32(np, "efm32,location", &location);
if (ret)
/* fall back to old and (wrongly) generic property "location" */
ret = of_property_read_u32(np, "location", &location);
if (!ret) {
dev_dbg(&pdev->dev, "using location %u\n", location);
} else {