Hi Guennadi, Thank you for the patch.
On Thursday 26 September 2013 19:21:00 Guennadi Liakhovetski wrote: > The Lager board uses a DA9210 voltage regulator to supply DVFS power to the > CA15 cores on the r8a7790 SoC. This patch adds CPUFreq support for that > board using the cpufreq-cpu0 driver. > > Signed-off-by: Guennadi Liakhovetski <[email protected]> > --- > > v2: added 'status = "okay";' to the i2c bus > > arch/arm/boot/dts/r8a7790-lager-reference.dts | 33 +++++++++++++++++++++ > arch/arm/mach-shmobile/board-lager-reference.c | 4 ++- > 2 files changed, 36 insertions(+), 1 deletions(-) > > diff --git a/arch/arm/boot/dts/r8a7790-lager-reference.dts > b/arch/arm/boot/dts/r8a7790-lager-reference.dts index c462ef1..1ce0a97 > 100644 > --- a/arch/arm/boot/dts/r8a7790-lager-reference.dts > +++ b/arch/arm/boot/dts/r8a7790-lager-reference.dts > @@ -43,3 +43,36 @@ > }; > }; > }; > + > +&i2c3 { > + status = "okay"; > + pinctrl-names = "default"; > + pinctrl-0 = <&i2c3_pins>; > + > + vdd_dvfs: da9210@68 { > + compatible = "diasemi,da9210"; > + reg = <0x68>; > + > + regulator-min-microvolt = <900000>; > + regulator-max-microvolt = <1000000>; > + regulator-boot-on; > + regulator-always-on; > + }; > +}; > + > +&cpu0 { > + cpu0-supply = <&vdd_dvfs>; > + operating-points = < > + /* kHz uV - OPs unknown yet */ > + 1300000 1000000 > + 1000000 900000 > + >; > + voltage-tolerance = <1>; /* 1% */ > +}; > + > +&pfc { > + i2c3_pins: i2c3 { > + renesas,groups = "i2c3"; > + renesas,function = "i2c3"; > + }; > +}; > diff --git a/arch/arm/mach-shmobile/board-lager-reference.c > b/arch/arm/mach-shmobile/board-lager-reference.c index 1a1a4a8..2bc8bae > 100644 > --- a/arch/arm/mach-shmobile/board-lager-reference.c > +++ b/arch/arm/mach-shmobile/board-lager-reference.c > @@ -20,6 +20,7 @@ > > #include <linux/init.h> > #include <linux/of_platform.h> > +#include <linux/platform_device.h> > #include <mach/r8a7790.h> > #include <asm/mach/arch.h> > > @@ -29,7 +30,8 @@ static void __init lager_add_standard_devices(void) > r8a7790_clock_init(); > > r8a7790_add_dt_devices(); > - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); > + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); > + platform_device_register_simple("cpufreq-cpu0", -1, NULL, 0); Out of curiosity, could you explain how this cpufreq-cpu0 platform device gets associated with the cpu0 DT node ? The cpufreq-cpu0 driver requires a DT node (its probe function returns -ENOENT if pdev->dev.of_node is NULL), and I don't see how the of_node gets set as the platform device is registered through board code. I might of course be missing something obvious :-) > } > > static const char *lager_boards_compat_dt[] __initdata = { -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
